SW3231001_Stormwater Report_20231219

MCBRIDE SUBDIVISION
HEMBY BRIDGE, NORTH CAROLINA
PROJECT CALCULATIONS
„„„IIIrrr ����.►►►►tkk CAiiii,*i
`��2 eg.()F ESS/0/•_.L-r fir'THE ISAACS%'...
9<'. r GROUP. P.C.
SEAL = = = i ENGINEERING & I =
026462 z LAND SURVEYING;Oz
NO. C-1069 ti
Digitally signed by Anthony
l `�-�
G5 B. Cowan, P.E.
Date: 2023.08.21
16:21:05-04'00'
ISAACS QC)
CIVIL ENGINEERING DESIGN & LAND SURVEYING C
8720 RED OAK BOULEVARD, STE. 420 -13
CHARLOTTE, N.C. 28217
PHONE [phone] FAX [phone]
NO. BY DA`L RIEUISION
1

TABLE OF CONTENTS
PROJECT NARRATIVE Page 3
STORM DRAINAGE CALCULATIONS
• STORM DRAINAGE CALCULATIONS Pages 4
• NOAA PRECIPITATION FREQUENCY Pages 5
• STORM DRAINAGE PIPE CALCULATIONS Pages 6-8
• STORM DRAINAGE HGL CALCULATIONS Pages 9-11
• STORM DRAINAGE PIPE TIME OF CONCENTRATION Pages 12-17
• DROP INLET CALCULATIONS Pages 18-19
• INLET SPREAD CALCULATIONS Pages 20-22
• HW/D CALCULATIONS Pages 23-24
• FES CALCULATIONS Pages 25-27
• SWALE CALCULATIONS Pages 28-34
EROSION CONTROL CALCULATIONS
• EROSOION CONTROL CALCULATIONS Pages 35
• SEDIMENT BASINS CALCULATIONS Pages 36-46
• SLOPE DRAIN HW/D CALCULATIONS Pages 47-49
BMP CALCULATIONS
• DETENTION WORKSHEET (WET POND & SAND FILTER) Page 51
o SUMMARY Page 52
o CN CALCS Pages 53-54
o Tc CALCS Page 55
o STAGE-STORAGE CALCS Page 56
o STAGE-DISCHARGE CALCS Page 57
• BMP 1 (WET POND)
o DESIGN PROCEDURE FORM Page 58
o CONCRETE ANCHOR BUOYANCY CALCULATIONS Page 59
• BMP 2 (SAND FILTER)
o DESIGN PROCEDURE FORM Pages 60-61
o CONCRETE ANCHOR BUOYANCY CALCULATIONS Page 62
• BMP ROUTING CALCULATIONS
o PONDPACK OUTPUT (1, 10, 25 & 100 yr-24hr) Pages 63-141

Project Narrative
Project Description
The project site is located in the Town of Hemby Bridge, Union County N.C. and is an
approximately 84.20 acre parcel along Idlewild Road (S.R. 1501). The proposed project
consists of One Hundred & eight (108) single family residential units, two driveway
accesses roads and two (2) BMP's designed in accordance with Union County, NCDEQ
and NCDOT requirements. The project area drains to the North Fork Crooked Creek,
which has regulated FEMA floodplain.
The Union County and NCDEQ requirements that have been met in the design of this
project include the treatment of the 1 inch storm, and in accordance with the Union County
Land use ordinance, 2 and 25 year detention is not required due to the proximity to the
flood plan.
The rainfall amounts used in the analysis of this project were obtained from current data
from NOAA.
Structural stormwater controls in the form of one Wet Pond and one sand filter SCM have
been provided to meet the following minimum requirements:
a. Remove an 85 percent average annual amount of Total Suspended Solids for the
1" rainfall event.
b. Storm water treatment systems shall be installed to control the difference in the
storm water runoff from the pre-development and post-development conditions
for the 1-year, 24-hour storm. Runoff volume drawdown time shall be a minimum
of 24 hours, but not more than 120 hours.
c. Meet design of Stormwater Management Measures set forth in 15A NCAC 02H
.1008.
Natural Resources Inventory
The parcel is covered in approximately 35% woods and 65% grass fields.
Existing on-site slopes range from 2 to 20 percent on average and existing soil types on
site are Tantum (TbB2) (Hydrologic group B), Secrest-Cid (ScA) (Hydrologic Group CID),
Chewacla (ChA) (Hydrologic group C) and Tarrus-Urban (TuB) (Hydrologic group B). Soil
and Forestry Services of the Carolinas.
Existing and Proposed Drainage Patterns
Proposed drainage patterns to the proposed on-site wet pond and sand filter BMPs are
maintaining existing drainage patterns to the maximum extent practicable as needed to
create a balanced distribution of storm water flow thru the wet pond and sand filter BMPs in
a consistent manner with existing flows.
Due to topographical constraints, a portion of the site is bypass. This area is denoted as
Drainage Area #3 on sheet C4.5 of the construction plans is (39.09 acres). This bypass
area is in floodplain areas below the site and BMPs and does not include any proposed
impervious area.
3

MCBRIDE SUBDIVISION
HEMB Y BRIDGE, NORTH CAROLINA
STORM DRAINAGE CALCULATIONS
Note: Refer to Construction Document sheet C5.0 for drainage area maps.
4

10/21/22, 1:26 PM P recipitation Frequency Data Server
NO PA Atlas 14,Volume 2,Version 3
`s'�`0 . Location name: Indian Trail,North Carolina,USA* it"'
'a''
Latitude:35.1113°, Longitude: -80.6373° none %
t M:i Elevation: 644.58 ft** 1, if
ob�mso- *source:ESRI Mks "-AN,.,,.,
**source:USG S
PO NT PRECIPITATIO NFREQ LENCY ESTIMATES
G M.Bonnin,D.M atin,B.Lin,T.Parzybok,M Yekta,and D.Riley
NO AA,National Weather Service,Silver Spring,M ayland
PF tabular I PF graphical I Maps & aerials
PF tabular
AM S-based point precipitation frequency estimates w Hi 90% confidence intervals (in
inches/hour)1
Annual exceedance probability(1/years)
Duration
1/21 /51 /101 /251 /501 /1001 /2001 /5001 /1000
5-m in5.40 6.66 7.42 8.24 8.78 9.25 9.68 10.2 10.5
(4.97-5.87) (6.12-7.25) (6.80-8.05) (7.52-8.93) (7.98-9.49) (8.39-10.0) (8.72-10.5) (9.07-11.0) (9.30-11.4)
10-m n 4.32 5.33 5.93 6.56 6.99 7.36 7.68 8.05 8.27
(3.97-4.70) (4.90-5.80) (5.44-6.44) (5.99-7.11) (6.35-7.57) (6.66-7.96) (6.91-8.32) (7.18-8.73) (7.33-8.99)_
15-m in3.62 4.50 5.00 5.55 5.90 6.20 6.46 6.75 6.93
(3.33-3.94) (4.13-4.89) (4.59-5.43) (5.07-6.01) (5.36-6.39) (5.61-6.71) (5.82-7.00) (6.02-7.32) (6.13-7.53)
30-min 2.50 3.19 3.63 4.11 4.44 4.75 5.03 5.37 5.61
(2.30-2.72) (2.94-3.47) (3.33-3.93) (3.76-4.45) (4.04-4.81) (4.30-5.14) (4.53-5.45) (4.79-5.83) (4.97-6.10)
160-Min 1 1.57 2.05 2.36 2.74 3.01 3.27 3.53 3.85 4.09
(1.44-1.71) (1.88-2.23) (2.17-2.56) (2.50-2.96) (2.74-3.26) (2.96-3.54) (3.18-3.82) (3.44-4.18) (3.63-4.45)
2-hr 0.911 1.20 1.39 1.63 1.81 1.98 2.15 2.38 2.55
(0.835-0.997) (1.10-1.31) (1.27-1.52) (1.48-1.78) (1.64-1.97) (1.78-2.16) (1.93-2.35) (2.11-2.60) (2.24-2.79)
3-hr 0.643 0.852 0.996 1.18 1.32 1.47 1.61 1.81 1.97
(0.589-0.707) (0.779-0.935) (0.907-1.09) (1.07-1.29) (1.19-1.44) (1.31-1.60) (1.43-1.76) (1.59-1.97) (1.71-2.15)_
6-hr 0.388 0.514 0.602 0.716 0.805 0.895 0.988 1.12 1.22
(0.356-0.425) (0.470-0.563) (0.549-0.658) (0.650-0.781) (0.725-0.875) (0.801-0.973) (0.875-1.07) (0.975-1.21) (1.05-1.32)_
12-hr 0.228 0.304 0.358 0.429 0.485 0.543 0.604 0.689 0.758
(0.210-0.251) (0.279-0.333) (0.327-0.392) (0.389-0.469) (0.436-0.529) (0.484-0.591) (0.532-0.656) (0.597-0.748) (0.648-0.823)
24-hr 0.135 0.180 0.212 0.254 0.287 0.320 0.355 0.403 0.442
(0.125-0.146) (0.167-0.195) (0.196-0.230) (0.234-0.275) (0.263-0.310) (0.293-0.346) (0.324-0.384) (0.366-0.437) (0.399-0.480)
2-day 0.079 0.105 0.123 0.147 0.165 0.184 0.204 0.231 0.253
(0.074-0.086) (0.097-0.114) (0.114-0.133) (0.135-0.159) (0.152-0.179) (0.169-0.199) (0.186-0.221) (0.209-0.251) (0.228-0.275)
3-day 0.056 0.074 0.086 0.102 0.115 0.128 0.142 0.161 0.176
(0.052-0.060) (0.068-0.080) (0.080-0.093) (0.095-0.111) (0.106-0.124) (0.118-0.138) (0.129-0.153) (0.146-0.174) (0.159-0.190)
4-day 0.044 0.058 0.068 0.080 0.090 0.100 0.111 0.125 0.137
(0.041-0.048) (0.054-0.062) (0.063-0.073) (0.074-0.086) (0.083-0.097) (0.092-0.108) (0.101-0.119) (0.114-0.135) (0.124-0.148)
7-day 0.029 0.038 0.044 0.051 0.057 0.064 0.070 0.079 0.086
(0.027-0.031) (0.035-0.040) (0.041-0.047) (0.048-0.055) (0.053-0.061) (0.059-0.068) (0.065-0.075) (0.072-0.085) (0.079-0.093)
10-day 0.023 0.030 0.034 0.040 0.044 0.048 0.053 0.059 0.064
(0.022-0.025) (0.028-0.032) (0.032-0.036) (0.037-0.042) (0.041-0.047) (0.045-0.052) (0.049-0.056) (0.054-0.063) (0.059-0.068)
20-day 0.015 0.019 0.022 0.025 0.028 0.030 0.033 0.037 0.039
(0.015-0.016) (0.018-0.021) (0.021-0.023) (0.024-0.027) (0.026-0.030) (0.029-0.032) (0.031-0.035) (0.034-0.039) (0.036-0.042)
30-day 0.013 0.016 0.017 0.020 0.022 0.023 0.025 0.027 0.029
(0.012-0.013) (0.015-0.016) (0.017-0.018) (0.019-0.021) (0.020-0.023) (0.022-0.025) (0.023-0.027) (0.026-0.029) (0.027-0.031)
45-day 0.011 0.013 0.014 0.016 0.017 0.018 0.020 0.021 0.022
(0.010-0.011) (0.012-0.013) (0.014-0.015) (0.015-0.017) (0.016-0.018) (0.017-0.019) (0.018-0.021) (0.020-0.022) (0.021-0.024)
60-day 0.009 0.011 0.012 0.014 0.015 0.016 0.017 0.018 0.019
(0.009-0.010) (0.011-0.012) (0.012-0.013) (0.013-0.014) (0.014-0.016) (0.015-0.017) (0.016-0.018) (0.017-0.019) (0.018-0.020)
1 Precipitation frequency(PF)estimates in this table are based on frequency analysis of annual m adm a series(AM S).
Num hers in parenthesis are PF estim des at lower and upper bounds of the 90%confidence interval.The probability that precipitation frequency
estim des(for a given duration and annual exceedance probability)will be greater than the upper bound(or less than the lower bound)is 5%.
Estim des at upper bounds are not checked against probable m acim in precipitation(PM P)estim des and may be higher than currently valid PM P
values.
Please refer to NO PA Atlas 14 docum eit for m ae inform aion.
Back to Top
PF graphical
5
https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.htm Plat=35.1113&Ion=-80.6373&data=intensity&units=english&series=am s 14

25 YR STORM CALCULATIONS
Pipe From To Drainage Drainage Runoff Tc Tc Rain"I" Runoff"Q" Known Q Total Q Pipe Dia. Full Q Velocity Velocity Sec Time Invert Invert Crown Slope
Area Inc Area Total Coeff"C Full Design Elevation Elevation Drop
U/S D/S
(acre) (acre) (min) (min) (inch/hr) (cfs) (cfs) (cfs) (ft) (cfs) (ft/s) (ft/s) (min) (ft) (ft) (ft)
1C DI 1C FES 1A 0.67 16.03 0.6 5 8.934 7.224 2.90 0 67.714 4 120.653 9.601 9.87 0.347 635.07 633.84 N/A 0.60%
1D DI 1D DI 1C 0.48 1.00 0.6 5 5.56 8.138 2.32 0 4.918 1.25 7.005 5.708 6.175 0.233 636.37 635.5 N/A 1.00%
1P DI 1P DI 1D 0.52 0.52 0.6 5 5 8.29 2.60 0 2.625 1.25 9.859 8.034 6.791 0.56 645.28 640.77 N/A 1.98%
1E DBLCB 1E DI 1C 0.59 14.36 0.6 5 8.686 7.291 2.58 0 60.985 3.5 84.507 8.783 9.557 0.248 638 637.15 N/A 0.60%
1F CB 1F DBLCB 1E 0.32 13.77 0.6 5 8.645 7.302 1.42 0 58.474 3.5 84.507 8.783 9.473 0.041 638.67 638.53 N/A 0.60%
SLAB TYPE
2C CB 2C CB 1F 2.16 12.41 0.45 8.25 8.552 7.327 7.13 0 52.661 3.5 85.12 8.847 9.307 0.092 639.18 638.87 N/A 0.61%
SLAB TYPE
2D DI 2D CB 2C 0.45 10.25 0.6 5 7.934 7.495 2.04 0 46.507 3 56.023 7.926 8.855 0.618 641.35 639.38 N/A 0.60%
2E CB 2E DI 2D 0.50 9.80 0.6 5 7.672 7.566 2.25 0 44.875 3 56.023 7.926 8.801 0.262 642.38 641.55 N/A 0.60%
2F CB 2F CB 2E 0.49 0.93 0.6 5 5.382 8.187 2.38 0 4.619 1.25 5.426 4.421 4.96 0.078 644.71 644.57 N/A 0.60%
7H DI 7H CB 2F 0.45 0.45 0.6 5 5 8.29 2.22 0 2.243 1.25 8.998 7.332 6.085 0.382 647.21 644.91 N/A 1.65%
2G JB 2G CB 2E 0.00 8.37 0 0 7.477 7.619 0.00 0 38.607 3 51.142 7.235 7.944 0.195 643.05 642.58 N/A 0.50%
3A CB 3A JB 2G 0.52 1.11 0.6 5 5.079 8.269 2.60 0 5.553 1.25 6.066 4.943 5.601 0.196 648.81 648.32 N/A 0.75%
3L CB 3L CB 3A 0.59 0.59 0.6 5 S 8.29 2.92 0 2.941 1.25 5.861 4.776 4.777 0.079 649.17 649.01 N/A 0.70%
2H CB 2H JB 2G 0.25 1.09 0.6 5 5.293 8.211 1.24 0 5.43 1.25 4.544 3.703 4.425 0.236 646.81 646.55 N/A 0.42%
21 CB 21 CB 2H 0.32 0.84 0.6 5 5.216 8.231 1.59 0 4.186 1.25 5.428 4.423 4.877 0.077 647.15 647.01 N/A 0.60%
2L DI 2L CB 21 0.52 0.52 0.6 5 5 8.29 2.58 0 2.605 1.25 8.907 7.258 6.296 0.216 648.73 647.41 N/A 1.62%
7A CB 7A JB 2G 0.40 6.16 0.6 5 7.18 7.699 1.86 0 28.754 3 56.023 7.926 7.972 0.297 644.13 643.28 N/A 0.60%
7C CB 7C CB 7A 0.33 5.76 0.6 5 7.129 7.713 1.52 0 26.923 2.5 34.452 7.019 7.758 0.051 645.74 645.6 N/A 0.60%
7B CB 7B CB 7C 0.05 4.92 0.7 5 6.724 7.823 0.26 0 23.312 2.5 41.006 8.354 8.614 0.405 647.72 645.94 N/A 0.85%
7D CB 7D CB 7B 0.21 4.87 0.6 5 6.66 7.84 0.99 0 23.101 2.5 57.992 11.814 11.136 0.064 648.65 647.92 N/A 1.70%
7E JB 7E CB 7D 0.00 4.30 0 0 6.44 7.9 0.00 0 20.558 2.5 68.183 13.89 12.15 0.22 652.62 648.85 N/A 2.35%
7F CB 7F JB 7E 0.53 0.99 0.6 5 5.459 8.166 2.62 0 4.891 1.25 6.952 5.665 6.131 0.061 657.21 656.99 N/A 0.99%
7G DI 7G CB 7F 0.46 0.46 0.6 5 S 8.29 2.27 0 2.284 1.25 7.005 5.708 5.101 0.459 658.82 657.42 N/A 1.00%
7J CB 7J JB 7E 0.27 3.31 0.6 5 6.389 7.913 1.29 0 15.854 2 48.662 15.489 13.838 0.05 657.9 656.25 N/A 3.94%
7M CB 7M CB 71 0.04 3.04 0.6 5 6.119 7.987 0.20 0 14.686 2 41.048 13.066 11.97 0.27 663.53 658.1 N/A 2.80%
7N CB 7N CB 7M 0.28 2.59 0.6 5 6.049 8.006 1.36 0 12.542 2 19.002 6.048 6.456 0.07 665.56 665.39 N/A 0.60%
7P CB 7P CB 7N 0.28 2.31 0.6 5 5.987 8.022 1.34 0 11.194 2 19.002 6.048 6.29 0.062 665.9 665.76 N/A 0.60%
7Q CB 7Q CB 7P 0.47 1.56 0.6 5 5.543 8.143 2.30 0 7.68 1.5 8.823 4.993 5.62 0.444 667 666.1 N/A 0.60%
7R CB 7R CB 7Q 0.52 1.09 0.6 5 5.469 8.163 2.54 0 5.376 1.25 5.426 4.421 5.036 0.074 667.33 667.2 N/A 0.60%
7S DI 7S CB 7R 0.57 0.57 0.6 5 5 8.29 2.83 0 2.855 1.25 6.278 5.116 4.991 0.469 668.66 667.53 N/A 0.80%
7U DI 7U CB 7P 0.47 0.47 0.6 5 5 8.29 2.33 0 2.351 1.25 6.265 5.105 4.737 0.494 668.9 667.77 N/A 0.80%
7T DI 7T CB 7M 0.41 0.41 0.6 5 5 8.29 2.03 0 2.05 1.25 5.426 4.421 4.11 0.57 665.12 664.28 N/A 0.60%
7L DI 7L CB 7D 0.36 0.36 0.6 5 S 8.29 1.79 0 1.801 1.25 9.906 8.072 6.13 0.104 651.26 650.5 N/A 2.00%
7K DI 7K CB 7C 0.52 0.52 0.6 5 5 8.29 2.56 0 2.584 1.25 7.764 6.327 5.685 0.102 647.16 646.73 N/A 1.23%
2A CB 2A CB 1F 0.41 1.03 0.6 5 5.082 8.268 2.04 0 5.161 1.25 5.426 4.421 5.027 0.427 643.67 642.89 N/A 0.60%
2B DBLCB 2B CB 2A 0.62 0.62 0.6 5 5 8.29 3.08 0 3.108 1.25 5.436 4.43 4.574 0.082 644 643.87 N/A 0.60%
1G DI 1G FES 2 0.74 19.54 0.6 5 10.502 6.799 3.02 0 74.057 4 120.653 9.601 10.081 0.225 635.38 634.56 N/A 0.60%
1H CB 1H DI 1G 0.43 18.80 0.6 5 10.258 6.865 1.76 0 71.697 4 110.14 8.765 9.327 0.244 639.32 638.64 N/A 0.50%
11 CB 11 CB 1H 0.52 18.37 0.6 5 10.215 6.877 2.14 0 70.045 4 110.14 8.765 9.278 0.043 639.64 639.52 N/A 0.50%
1K CB 1K CB 11 0.03 17.86 0.7 5 9.736 7.006 0.17 0 69.169 4 120.653 9.601 9.921 0.479 641.55 639.84 N/A 0.60%
1L JB 1L CB 1K 0.00 16.70 0 0 9.667 7.025 0.00 0 64.419 3.5 84.507 8.783 9.663 0.07 642.29 642.05 N/A 0.60%
1M CB 1M JB 1L 0.13 16.70 0.7 5 9.581 7.049 0.65 0 64.632 3.5 84.507 8.783 9.669 0.086 642.79 642.49 N/A 0.60%
1N DBLCB 1N CB 1M 0.79 16.57 0.6 5 9.541 7.059 3.36 0 64.071 3.5 84.507 8.783 9.653 0.04 643.13 642.99 N/A 0.60%
SLAB TYPE
2M CB 2M DBLCB 1N 1.09 15.77 0.45 9 9.166 7.161 3.52 0 61.554 3.5 84.507 8.783 9.575 0.374 644.62 643.33 N/A 0.60%
SLAB TYPE
3F DI 3F CB 2M 0.50 14.68 0.6 5 8.699 7.288 2.17 0 59.031 3.5 84.507 8.783 9.492 0.468 646.42 644.82 N/A 0.60%
6

25 YR STORM CALCULATIONS
Pipe From To Drainage Drainage Runoff Tc Tc Rain"I" Runoff"Q" Known Q Total Q Pipe Dia. Full Q Velocity Velocity Sec Time Invert Invert Crown Slope
Area Inc Area Total Coeff"C" Full Design Elevation Elevation Drop
U/S D/S
(acre) (acre) (min) (min) (inch/hr) (cfs) (cfs) (cfs) (ft) (cfs) (ft/s) (ft/s) (min) (ft) (ft) (ft)
SLAB TYPE
3G CB 3G DI 3F 1.58 9.36 0.45 7.85 8.189 7.426 5.27 0 37.043 3 56.023 7.926 8.463 0.51 648.17 646.62 N/A 0.60%
SLAB TYPE
3H DBL CB 3H CB 3G 0.36 7.78 0.7 5 7.986 7.481 1.89 0 31.961 3 56.023 7.926 8.18 0.203 648.97 648.37 N/A 0.60%
31 DBL CB 3J DBL CB 3H 0.18 2.64 0.6 5 7.608 7.583 0.82 0 10.119 2 19.002 6.048 6.139 0.061 649.34 649.21 N/A 0.60%
5B CB 5B DBL CB 3J 0.71 0.71 0.6 5 5 8.29 3.53 0 3.561 1.25 7.005 5.708 5.728 0.189 652.56 651.91 N/A 1.00%
SLAB TYPE
3K CB 3K DBL CB 31 1.75 1.75 0.45 7.5 7.5 7.612 6.01 0 6.06 1.5 8.823 4.993 5.376 0.108 649.55 649.34 N/A 0.60%
3U CB 3U DBL CB 3H 0.35 4.78 0.6 5 7.744 7.546 1.59 0 20.254 3 56.023 7.926 7.281 0.242 649.68 649.05 N/A 0.60%
3M CB 3M CB 3U 0.10 4.43 0.7 5 7.592 7.588 0.54 0 18.755 2.5 34.452 7.019 7.162 0.152 650.07 649.68 N/A 0.60%
3T CB 3T CB 3M 0.12 3.60 0.7 5 7.269 7.675 0.63 0 15.04 2 19.002 6.048 6.702 0.323 651.05 650.27 N/A 0.60%
4D CB 4D CB 3T 0.05 3.08 0.7 5 7.09 7.724 0.28 0 12.616 2 19.002 6.048 6.465 0.179 652.92 652.51 N/A 0.60%
4A CB 4A CB 4D 0.11 3.03 0.7 5 6.857 7.787 0.59 0 12.431 2 19.002 6.048 6.444 0.233 653.66 653.12 N/A 0.60%
4E CB 4E CB 4A 0.34 1.09 0.6 5 6.78 7.808 1.60 0 4.278 1.25 5.426 4.421 4.895 0.077 654.36 654.23 N/A 0.60%
4G DI 4G CB 4E 0.75 0.75 0.45 6.2 6.2 7.965 2.69 0 2.715 1.25 5.426 4.421 4.419 0.58 655.49 654.56 N/A 0.60%
4C CB 4C CB 4A 0.22 1.83 0.7 5 5.551 8.141 1.27 0 7.918 1.5 10.188 5.765 6.366 0.479 655.58 654.12 N/A 0.80%
4B CB 4B CB 4C 0.58 1.60 0.6 5 5.482 8.159 2.85 0 6.652 1.25 5.426 4.421 5.421 0.069 655.92 655.78 N/A 0.60%
4F DI 4F CB 4B 1.02 1.02 0.45 5 5 8.29 3.81 0 3.841 1.25 5.426 4.421 4.792 0.482 656.95 656.12 N/A 0.60%
3N CB 3N CB 3T 0.40 0.40 0.6 5 5 8.29 2.00 0 2.018 1.25 7.005 5.708 4.931 0.077 653.36 653.13 N/A 1.00%
3Q CB 3Q CB 3M 0.04 0.73 0.6 5 5.697 8.101 0.17 0 3.571 1.5 8.823 4.993 4.726 0.612 653.24 652.2 N/A 0.60%
3R CB 3R CB 3Q 0.19 0.57 0.6 5 5.354 8.194 0.96 0 2.836 1.25 5.426 4.421 4.467 0.343 653.99 653.44 N/A 0.60%
3S DI 3S CB 3R 0.38 0.38 0.6 5 S 8.29 1.88 0 1.892 1.25 5.426 4.421 4.023 0.354 654.7 654.19 N/A 0.60%
3P CB 3P CB 3Q 0.12 0.12 0.6 5 5 8.29 0.60 0 0.606 1.25 7.005 5.708 3.496 0.107 657.44 657.21 N/A 1.00%
3B CB 3B DI 3F 0.05 4.83 0.6 5 6.825 7.795 0.23 0 21.922 2.5 34.452 7.019 7.431 0.315 649.97 649.12 N/A 0.60%
3C CB 3C CB 3B 0.48 4.78 0.6 5 6.761 7.813 2.26 0 21.742 2.5 34.452 7.019 7.417 0.064 650.34 650.17 N/A 0.60%
3D CB 3D CB 3C 0.58 4.29 0.6 5 6.709 7.827 2.71 0 19.494 2.5 34.452 7.019 7.229 0.052 650.67 650.54 N/A 0.60%
3E DI 3E CB 3D 0.59 0.59 0.6 5 5 8.29 2.94 0 2.964 1.25 8.998 7.332 6.57 0.356 653.19 650.87 N/A 1.65%
5C CB SC CB 3D 0.29 3.13 0.6 5 6.15 7.978 1.40 0 14.232 2 28.325 9.016 9.021 0.559 656.61 652.57 N/A 1.33%
5D DI 5D CB 5C 0.63 0.63 0.6 5 5 8.29 3.15 0 3.179 1.25 6.056 4.935 4.992 0.467 658.61 657.56 N/A 0.75%
5F CB SF CB 5C 0.21 2.20 0.6 5 5.872 8.054 1.04 0 9.854 2 28.146 8.959 8.16 0.277 658.85 657.06 N/A 1.32%
5G CB 5G CB 5F 0.22 1.99 0.6 5 5.707 8.098 1.06 0 8.857 2 49.591 15.785 11.927 0.165 663.88 659.05 N/A 4.09%
5H CB 5H CB SG 0.69 1.14 0.5 5 5.525 8.148 2.80 0 5.047 1.25 5.861 4.776 5.367 0.07 664.76 664.61 N/A 0.70%
51 DI 51 CB 5H 0.45 0.45 0.6 5 5 8.29 2.25 0 2.268 1.25 5.861 4.776 4.467 0.525 665.95 664.96 N/A 0.70%
5K CB 5K CB SG 0.13 0.63 0.7 5 5.487 8.158 0.72 0 2.796 1.25 14.01 11.416 8.902 0.22 669.55 664.85 N/A 4.00%
5L CB 5L CB 5K 0.50 0.50 0.5 5 5 8.29 2.09 0 2.108 1.25 6.827 5.563 4.898 0.487 671.11 669.75 N/A 0.95%
1Q CB 1Q CB 1K 0.74 1.12 0.6 5 5.549 8.141 3.62 0 5.527 1.25 5.426 4.421 5.03 0.077 648.63 648.49 N/A 0.60%
1R DI 1R CB 1Q 0.38 0.38 0.6 5 5 8.29 1.89 0 1.909 1.25 5.861 4.776 4.266 0.549 649.81 648.83 N/A 0.70%
6H DI 6H FES 6A 0.52 4.74 0.6 5 6.375 7.917 2.45 0 22.184 3 56.023 7.926 7.459 0.123 638.33 638 N/A 0.60%
6C DBL CB 6C DI 6H 0.47 4.22 0.6 5 6.016 8.015 2.26 0 19.958 2.5 34.452 7.019 7.27 0.359 639.82 638.89 N/A 0.60%
6D DBL CB 6D DBL CB 6C 0.62 3.76 0.6 5 5.964 8.029 3.00 0 17.714 2.5 34.452 7.019 7.062 0.053 642 641.86 N/A 0.60%
6F CB 6F DBL CB 6D 0.36 0.60 0.6 5 5.106 8.261 1.78 0 2.996 1.25 11.721 9.551 7.983 0.488 648.79 642.25 N/A 2.80%
6G CB 6G CB 6F 0.24 0.24 0.6 5 5 8.29 1.19 0 1.202 1.25 5.426 4.421 3.551 0.106 650.41 650.27 N/A 0.60%
SLAB TYPE
61 CB 61 DBL CB 6D 0.64 1.96 0.6 5 5.551 8.141 3.15 0 8.996 1.5 8.823 4.993 5.68 0.413 643.39 642.55 N/A 0.60%
SLAB TYPE
6K DI 6K CB 61 0.45 0.45 0.6 5 5 8.29 2.22 0 2.242 1.25 9.266 7.551 6.215 0.192 644.84 643.59 N/A 1.75%
SLAB TYPE
61 DI 61 CB 61 0.52 0.87 0.45 5 5.312 8.205 1.93 0 3.65 1.25 14.184 11.558 9.678 0.239 649.28 643.59 N/A 4.10%
6L DI 6L DI 61 0.34 0.34 0.6 5 5 8.29 1.70 0 1.719 1.25 5.426 4.421 3.92 0.312 649.92 649.48 N/A 0.60%
6B CB 6B DBL CB 6D 0.44 0.57 0.6 5 5.119 8.258 2.19 0 2.983 1.25 5.84 4.759 4.781 0.236 643.85 643.38 N/A 0.70%
6E CB 6E CB 6B 0.13 0.13 0.7 5 5 8.29 0.77 0 0.781 1.25 5.426 4.421 3.141 0.119 644.19 644.05 N/A 0.60%
8B HW 8B HW 8A 10.02 10.02 0.45 24.25 24.25 4.686 21.13 0 21.304 2.5 68.904 14.037 12.363 0.136 641.85 639.42 N/A 2.40%
7

25 YR STORM CALCULATIONS
Pipe From To Drainage Drainage Runoff Tc Tc Rain"I" Runoff"Q" Known Q Total Q Pipe Dia. Full Q Velocity Velocity Sec Time Invert Invert Crown Slope
Area Inc Area Total Coeff"C" Full Design Elevation Elevation Drop
U/S D/S
(acre) (acre) (min) (min) (inch/hr) (cfs) (cfs) (cfs) (ft) (cfs) (ft/s) (ft/s) (min) (ft) (ft) (ft)
RD2 DI RD2 FES RD1 0.84 4.11 0.4 5 5.11 8.26 2.78 0 13.708 1.5 14.041 7.946 9.047 0.079 667.86 667.21 N/A 1.52%
RD3 CONC.COL DI RD2 0.00 3.27 0 0 5.072 8.271 0.00 0 10.918 1.5 14.272 8.076 8.891 0.038 669.7 669.38 N/A 1.57%
RD4 CULVERT R CONC.COL 3.27 3.27 0.4 5 5 8.29 10.85 0 10.944 1.5 14.272 8.076 8.895 0.072 670.3 669.7 N/A 1.57%
8

25 YR STORM HGL CALCULATIONS
Struct.ID D Q L V d do vA2/2g EGLo HGLo Sf Total EGLi HGLi Ea EGLa U/S TOC Surface
Pipe Loss Elev.
(ft) (csf) (ft) (ft/s) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft)
FES 1A 639.41 639.41 637.84 638.34
DI 1C 4 67.714 205.23 5.388 4 n/a 0.45 639.86 639.41 0.002 0.39 640.25 639.8 5.44 640.51 640.65 643.25
DI 1D 1.25 4.918 86.46 4.007 1.25 n/a 0.25 640.61 640.36 0.005 0.43 641.04 640.79 4.79 641.16 642.02 644.2
DI 1P 1.25 2.625 228 6.791 0.44 0.65 0.72 641.92 641.21 0 0 646.44 645.72 1.16 646.44 --- 648.72
DBL CB 1E 3.5 60.985 142.2 9.557 2.2 2.45 1.42 640.77 640.13 0 0 641.63 640.21 4.15 642.15 642.03 646.17
CB 1F 3.5 58.474 23.25 6.078 2.14 2.4 0.57 642.38 641.81 0.003 0.07 642.45 641.87 4 642.67 642.37 646.17
SLAB TYPE CB 2C 3.5 52.661 51.55 5.474 1.99 2.27 0.47 642.86 642.39 0.002 0.12 642.98 642.51 3.91 643.09 642.38 645.91
DI 2D 3 46.507 328.44 6.579 2.09 2.22 0.67 643.36 642.68 0.004 1.36 644.72 644.05 4.42 645.78 644.55 650.6
CB 2E 3 44.875 138.57 6.349 3 n/a 0.63 646.03 645.4 0.004 0.53 646.56 645.93 4.66 647.05 645.82 651.08
CB 2F 1.25 4.619 23.34 3.764 1.25 n/a 0.22 647.13 646.91 0.004 0.1 647.23 647.01 2.64 647.35 646.16 650.91
DI 7H 1.25 2.243 139.33 6.085 0.43 0.6 0.58 647.37 647.31 0.001 0 648.21 647.63 1 648.21 --- 650.19
JB 2G 3 38.607 92.81 5.462 3 n/a 0.46 647.23 646.77 0.003 0.26 647.5 647.03 4.81 647.85 647.8 651.78
CB 3A 1.25 5.553 65.96 5.601 0.94 0.95 0.49 649.75 649.26 0 0 650.24 649.75 2.04 650.85 650.26 652.99
CB 3L 1.25 2.941 22.51 2.396 1.25 n/a 0.09 650.88 650.79 0.002 0.04 650.92 650.83 1.8 650.97 --- 652.99
CB 2H 1.25 5.43 62.64 4.425 1.25 0.94 0.3 647.97 647.67 0.006 0.38 648.37 648.06 1.8 648.61 648.26 651.36
CB 2J 1.25 4.186 22.5 3.411 1.25 n/a 0.18 648.68 648.5 0.004 0.08 648.76 648.58 1.74 648.89 648.66 651.36
DI 2L 1.25 2.605 81.62 6.296 0.46 0.65 0.62 648.92 648.85 0.001 0 649.81 649.19 1.08 649.81 --- 652.51
CB 7A 3 28.754 142.22 4.068 3 n/a 0.26 647.96 647.7 0.002 0.23 648.18 647.92 4.26 648.39 648.1 650.91
CB 7C 2.5 26.923 23.67 5.485 1.66 1.77 0.47 648.58 648.11 0.004 0.09 648.66 648.19 3.29 649.03 647.98 650.91
CB 7B 2.5 23.312 209.11 4.749 1.35 1.64 0.35 649.17 648.82 0.003 0.58 649.75 649.4 2.63 650.35 650.42 652.9
CB 7D 2.5 23.101 43.04 11.136 1.1 1.64 1.93 650.49 650.14 0 0 651.68 649.75 3.03 651.68 651.35 653.96
JB 7E 2.5 20.558 160.45 12.15 0.94 1.54 2.3 651.79 651.51 0.002 0 655.86 653.56 3.24 655.86 658.24 660.62
CB 7F 1.25 4.891 22.55 6.131 0.77 0.9 0.58 658.35 657.77 0 0 658.57 657.99 1.57 658.79 658.67 660.97
DI 7G 1.25 2.284 140.5 5.101 0.49 0.6 0.4 658.81 658.75 0.001 0 659.72 659.31 0.9 659.72 --- 661.48
CB 7J 2 15.854 41.83 13.838 0.79 1.44 2.98 660.02 657.04 0 0 661.66 658.69 3.76 661.66 660.1 662.64
CB 7M 2 14.686 194.02 11.97 0.83 1.38 2.23 661.8 661.46 0.004 0 666.58 664.36 3.05 666.58 667.39 670.31
CB 7N 2 12.542 27.06 6.456 1.19 1.27 0.65 667.23 666.58 0 0 667.39 666.74 2.45 668 667.76 670.9
CB 7P 2 11.194 23.45 3.563 2 n/a 0.2 668.08 667.88 0.002 0.05 668.13 667.93 2.36 668.25 667.6 671.22
CB 7Q 1.5 7.68 149.79 4.346 1.5 n/a 0.29 668.37 668.08 0.005 0.68 669.05 668.76 2.28 669.28 668.45 673.57
CB 7R 1.25 5.376 22.5 4.381 1.25 n/a 0.3 669.4 669.1 0.006 0.13 669.53 669.23 2.35 669.68 668.78 673.59
DI 75 1.25 2.855 140.35 2.327 0.59 0.68 0.08 669.72 669.63 0.002 0.23 669.95 669.87 1.34 670 --- 672.08
DI 7U 1.25 2.351 140.51 4.737 0.53 0.61 0.35 668.65 668.3 0 0 669.78 669.43 0.93 669.82 --- 671.83
DI 7T 1.25 2.05 140.48 1.67 1.25 n/a 0.04 666.6 666.56 0.001 0.12 666.72 666.68 1.62 666.74 --- 668.37
DI 7L 1.25 1.801 38.18 6.13 0.36 0.53 0.58 651.69 651.66 0 0 652.21 651.63 0.95 652.21 --- 660.01
DI 7K 1.25 2.584 34.65 2.106 1.25 n/a 0.07 649.06 648.99 0.001 0.05 649.11 649.04 1.99 649.15 --- 651.96
9

25 YR STORM HGL CALCULATIONS
Struct.ID D Q L V d do vA2/2g EGLo HGLo Sf Total EGLi HGLi Ea EGLa U/S TOC Surface
Pipe Loss Elev.
(ft) (csf) (ft) (ft/s) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft)
CB 2A 1.25 5.161 128.69 5.027 0.97 0.92 0.39 644.26 643.87 0.006 0.77 645.03 644.64 1.95 645.62 645.12 648.14
DBL CB 2B 1.25 3.108 22.42 2.532 1.25 n/a 0.1 645.66 645.56 0.002 0.04 645.7 645.6 1.76 645.76 --- 648.12
FES 2 639.41 639.41 638.56 639.06
DI 1G 4 74.057 136.17 5.893 4 n/a 0.54 639.95 639.41 0.002 0.31 640.26 639.72 5.14 640.52 642.64 647.65
CB 1H 4 71.697 136.5 9.327 2.35 2.56 1.35 642.34 640.99 0 0 643.03 641.67 4.05 643.37 643.52 649.89
CB 1J 4 70.045 24.17 9.278 2.32 2.53 1.34 643.57 643.08 0 0 643.57 642.23 4.11 643.75 643.84 649.89
CB 1K 4 69.169 284.84 9.921 2.17 2.51 1.53 643.94 643.47 0 0 645.25 643.72 3.96 645.51 645.55 654.9
JB 1L 3.5 64.419 40.52 9.663 2.29 2.52 1.45 645.79 645.09 0 0 646.03 644.58 5.31 647.6 645.99 655.58
CB 1M 3.5 64.632 49.62 6.718 3.5 n/a 0.7 647.89 647.18 0.004 0.17 648.06 647.36 5.86 648.64 646.49 655.63
'DBLCB 1N 3.5 64.071 23.25 6.659 3.5 n/a 0.69 648.92 648.23 0.003 0.08 649 648.31 6.4 649.53 646.83 655.45
SLAB TYPE CB 2M 3.5 61.554 215.09 6.398 3.5 n/a 0.64 649.79 649.15 0.003 0.69 650.47 649.84 6.3 650.92 648.32 654.59
DI 3F 3.5 59.031 266.47 6.136 3.5 n/a 0.59 651.16 650.57 0.003 0.78 651.94 651.35 5.85 652.27 649.62 656.44
SLAB TYPE CB 3G 3 37.043 258.94 5.24 3 n/a 0.43 652.44 652.01 0.003 0.68 653.12 652.69 5.15 653.32 651.37 653.81
DBL CB 3H 3 31.961 99.62 4.522 3 n/a 0.32 653.45 653.13 0.002 0.19 653.64 653.33 4.84 653.81 651.21 655.41
DBL CB 3J 2 10.119 22.33 3.221 2 n/a 0.16 653.87 653.71 0.002 0.04 653.91 653.75 4.66 654 650.84 655.41
CB 5B 1.25 3.561 64.99 2.902 1.25 n/a 0.13 654.05 653.92 0.003 0.17 654.22 654.09 1.72 654.28 --- 656.15
SLAB TYPE CB 3K 1.5 6.06 34.71 3.429 1.5 n/a 0.18 654.07 653.89 0.003 0.1 654.17 653.99 4.66 654.21 --- 654.4
CB 3U 3 20.254 105.62 2.865 3 n/a 0.13 653.86 653.73 0.001 0.08 653.94 653.81 4.29 653.97 652.18 656.9
CB 3M 2.5 18.755 65.34 3.821 2.5 n/a 0.23 654.06 653.83 0.002 0.12 654.17 653.95 4.3 654.37 653.7 658.04
CB 3T 2 15.04 129.8 4.788 2 n/a 0.36 654.51 654.15 0.004 0.49 655 654.64 4.06 655.11 654.51 656.83
CB 4D 2 12.616 69.38 4.016 2 n/a 0.25 655.21 654.96 0.003 0.18 655.4 655.15 2.54 655.46 655.12 657.31
CB 4A 2 12.431 90.26 3.957 1.18 1.27 0.24 655.56 655.31 0.003 0.23 655.79 655.54 2.25 655.91 655.62 658.19
CB 4E 1.25 4.278 22.68 3.486 1.25 n/a 0.19 655.99 655.8 0.004 0.08 656.07 655.88 1.77 656.13 655.81 658.14
DI 4G 1.25 2.715 153.65 2.212 0.63 0.66 0.08 656.16 656.09 0.002 0.23 656.39 656.32 1.1 656.59 --- 658.24
CB 4C 1.5 7.918 183.04 6.366 0.99 1.09 0.63 656.04 655.72 0.005 0 657.21 656.58 2.3 657.88 657.03 659.96
CB 4B 1.25 6.652 22.5 5.421 1.25 n/a 0.46 658.07 657.61 0.009 0.2 658.27 657.81 2.49 658.41 657.37 659.95
DI 4F 1.25 3.841 138.63 3.13 1.25 n/a 0.15 658.47 658.32 0.003 0.42 658.89 658.74 1.99 658.94 --- 659.7
CB 3N 1.25 2.018 22.81 1.645 1.25 n/a 0.04 655.13 655.09 0.001 0.02 655.15 655.11 1.81 655.17 --- 656.76
CB 3Q 1.5 3.571 173.52 2.021 0.66 0.72 0.06 654.39 654.33 0.001 0.17 654.56 654.5 1.37 654.61 654.69 660.07
CB 3R 1.25 2.836 91.93 4.467 0.64 0.68 0.31 654.65 654.56 0 _ 0 654.94 654.63 1.2 655.19 655.44 659.67
DI 3S 1.25 1.892 85.36 4.023 0.51 0.55 0.25 655.21 655.16 01 0 655.47 655.21 0.8 655.51 --- 657.7
CB 3P 1.25 0.606 22.5 3.496 0.25 0.3 0.19 657.65 657.46 0 0 657.88 657.69 0.44 657.88 --- 660.37
CB 3B 2.5 21.922 140.54 4.466 1.45 1.59 0.31 652.39 652.08 0.002 0.34 652.73 652.42 3.03 652.99 652.67 656.6
CB 3C 2.5 21.742 28.66 4.429 2.5 n/a 0.31 653.12 652.81 0.002 0.07 653.18 652.88 3.09 653.43 653.04 657
CB 3D 2.5 19.494 22.51 3.971 2.5 n/a 0.25 653.53 653.28 0.002 0.04 653.57 653.33 3.08 653.75 654.57 656.99
DI 3E 1.25 2.964 140.13 2.415 0.49 0.69 0.09 653.79 653.7 0.002 0.25 654.04 653.95 1.43 654.61 --- 656.63
10

25 YR STORM HGL CALCULATIONS
Struct.ID D Q L V d do vA2/2g EGLo HGLo Sf Total EGLi HGLi Ea EGLa U/S TOC Surface
Pipe Loss Elev.
(ft) (csf) (ft) (ft/s) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft)
CB 5C 2 14.232 302.56 9.021 1 1.36 1.27 654.84 653.58 0 0 658.88 657.61 2.27 658.88 658.81 661.23
DI SD 1.25 3.179 139.86 4.992 0.64 0.72 0.39 658.92 658.81 0.002 0 659.64 659.25 1.2 659.81 --- 661.61
CB 5F 2 9.854 135.85 8.16 0.82 1.12 1.04 658.94 658.78 0 0 660.7 659.66 1.85 660.7 661.05 663.89
CB 5G 2 8.857 118.29 11.927 0.57 1.06 2.21 660.76 660.6 0 0 666.66 664.45 2.78 666.66 665.86 668.47
CB 5H 1.25 _5.047 22.5 4.113 1.25 n/a 0.26 666.77 666.51 0.005 0.12 666.89 666.62 2.21 666.98 666.21 668.45
DI 5J 1.25 _2.268 140.77 1.848 0.54 0.6 0.05 667 666.94 0.001 0.15 667.14 667.09 1.22 667.17 --- 669.23
CB 5K 1.25 2.796 117.68 8.902 0.38 0.67 1.23 666.7 666.62 0.002 0 671.16 669.93 1.61 671.16 671 673.38
CB 5L 1.25 2.108 143.03 4.898 0.48 0.58 0.37 671.18 671.13 0.001 0 671.96 671.59 0.85 671.96 --- 675.07
CB 1Q 1.25 5.527 23.33 5.03 1.05 0.95 0.39 649.93 649.54 0.006 0.14 650.07 649.68 1.96 650.59 650.08 654.91
DI 1R 1.25 1.909 140.44 1.555 0.49 0.55 0.04 650.61 650.57 0.001 0.1 650.71 650.67 0.92 650.73 --- 653.25
FES 6A 639.83 639.83 641 641.42
DI 6H 3 22.184 55.16 7.459 1.31 1.52 0.87 641.07 640.7 0 0 641.07 640.21 2.74 641.07 641.39 648.15
DBL CB 6C 2.5 19.958 156.52 7.27 1.37 1.52 0.82 641.19 640.89 0 0 642.01 641.19 2.49 642.31 644.36 646.88
DBL CB 6D 2.5 17.714 22.32 7.062 1.27 1.42 0.78 643.91 643.14 0 0 644.04 643.27 2.35 644.34 643.5 646.88
CB 6F 1.25 2.996 233.52 7.983 0.43 0.7 0.99 644.38 644.29 0.002 0 650.21 649.22 1.42 650.21 651.52 653.97
CB 6G 1.25 1.202 22.5 3.551 0.4 0.43 0.2 650.87 650.67 0 0 651 650.81 0.6 651 --- 653.98
SLAB TYPE CB 6J 1.5 8.996 140.64 5.091 1.5 n/a 0.4 644.51 644.1 0.006 0.88 645.38 644.98 2.26 645.65 644.84 647.37
DI 6K 1.25 2.242 71.59 1.827 0.42 0.6 0.05 645.67 645.62 0.001 0.07 645.75 645.7 0.93 645.78 --- 648.08
DI 61 1.25 3.65 138.86 9.678 0.43 0.77 1.46 645.71 645.57 0.003 0 651.17 649.72 1.89 651.17 650.73 653.42
DI 6L 1.25 1.719 73.35 1.401 1.25 n/a 0.03 651.18 651.15 0.001 0.04 651.23 651.2 1.32 651.24 --- 653.32
CB 6B 1.25 2.983 67.66 4.781 0.63 0.69 0.36 644.4 644.26 0 0 644.84 644.49 1.21 645.06 645.3 647.76
CB 6E 1.25 0.781 22.5 3.141 0.32 0.35 0.15 645.07 645.06 0 0 645.07 644.91 0.88 645.07 --- 647.76
HW 8A 640.38 640.38 641.92 642.3
HW 8B 2.5 21.304 101.03 12.363 0.95 1.57 2.38 642.76 640.38 0 0 645.18 642.8 3.33 645.18 --- 644.72
FES RD1 668.41 668.41 668.71 669
DI RD2 1.5 13.708 42.94 9.047 1.2 1.37 1.27 669.68 668.41 0 0 670.33 669.06 2.74 670.61 670.88 671.49
CONC.COLLAR 1.5 10.918 20.14 8.891 0.98 1.27 1.23 671.59 670.36 0 0 671.91 _ 670.68 2.22 671.92 671.2 673.41
CULVERT RD4 1.5 10.944 38.37 6.193 1.5 n/a 0.6 672.16 671.56 0.009 0.35 672.51 671.91 2.33 672.63 --- 672.09
11

TR-55 Worksheet 3: Time of Concentration (Ta) or Travel Time (Tt)
Project By Date
McBride Subdivision AEN 6/24/2022
Location Checked Date
Union County
SLAB TYPE CB 2C Post Developed
Check one: 0 Te ❑ Tt through subarea
Note:Space for as many as three segments per flow type can be used for each worksheet. Include a map,
schematic,or description of flow segments.
Segment ID AB
1. Surface description (table 3-1) Dense Grass
2. Manning's roughness coefficient, n (table 3-1) 0.24
3. Flow length, L (total L<_ 100 ft) ft 50
4. Two-year 24-hour rainfall, P2 in 3.6
5. Land slope, s ft/ft 0.04
0.007 (nL)°8 Compute Tt hr 0.098 + + = 0.098 hr.
6. Tt= o.e 0 4
P2 s 5.86 min.
Shallow concentrated flow
Segment ID BC
7. Surface description (paved or unpaved) Unpaved
8. Flow length, L ft 390
9. Watercourse slope, s ft/ft 0.028
10. Average velocity, V(figure 3-1) ft/s 2.70
L Compute Tt hr 0.040 + + = 0.040 hr.
11. Tt=
3600 V 2.41 min.
20. Watershed or subarea T,or Tt (add Tt in steps 6, 11 and 19) 0.14 hr I
8.26 min.
P:\Active Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\Storm Design\Storm\22006-$E 61R T 2C-Tc
12

TR-55 Worksheet 3: Time of Concentration (Ta) or Travel Time (Tt)
Project By Date
McBride Subdivision AEN 6/24/2022
Location Checked Date
Union County
SLAB TYPE CB 2M Post Developed
Check one: 0 Tc ❑ Tt through subarea
Note:Space for as many as three segments per flow type can be used for each worksheet. Include a map,
schematic,or description of flow segments.
Segment ID AB
1. Surface description (table 3-1) Dense Grass
2. Manning's roughness coefficient, n (table 3-1) 0.24
3. Flow length, L (total L<_ 100 ft) ft 50
4. Two-year 24-hour rainfall, P2 in 3.6
5. Land slope, s ft/ft 0.022
_ 0.007 (nL)°8 Compute Tt hr 0.124 + + = 0.124 hr.
-
6. Tt o.e 0 4
P2 s 7.44 min.
Shallow concentrated flow
Segment ID BC
7. Surface description (paved or unpaved) Unpaved
8. Flow length, L ft 284
9. Watercourse slope, s ft/ft 0.028
10. Average velocity, V(figure 3-1) ft/s 2.70
L Compute Tt hr 0.029 + + = 0.029 hr.
11. Tt= -
3600 V 1.75 min.
20. Watershed or subarea T,or Tt (add Tt in steps 6, 11 and 19) 0.15 hr I
9.19 min.
P:\Active Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\Storm Design\Storm\22006-31M135I t9EDBs2M-Tc
13

TR-55 Worksheet 3: Time of Concentration (Ta) or Travel Time (Ti)
Project By Date
McBride Subdivision AEN 6/24/2022
Location Checked Date
Union County
SLAB TYPE CB 3G Post Developed
Check one: 0 Tc ❑ Tt through subarea
Note:Space for as many as three segments per flow type can be used for each worksheet. Include a map,
schematic,or description of flow segments.
Segment ID AB
1. Surface description (table 3-1) Dense Grass
2. Manning's roughness coefficient, n (table 3-1) 0.24
3. Flow length, L (total L<_ 100 ft) ft 50
4. Two-year 24-hour rainfall, P2 in 3.6
5. Land slope, s ft/ft 0.042
0.007 (nL)°8 Compute Tt hr 0.096 + + = 0.096 hr.
6. Tt= o.e 0 4
P2 s 5.74 min.
Shallow concentrated flow
Segment ID BC
7. Surface description (paved or unpaved) Unpaved
8. Flow length, L ft 334
9. Watercourse slope, s ft/ft 0.026
10. Average velocity, V(figure 3-1) ft/s 2.60
L Compute Tt hr 0.036 + + = 0.036 hr.
11. Tt=
3600 V 2.14 min.
20. Watershed or subarea T,or Tt (add Tt in steps 6, 11 and 19) 0.13 hr I
7.88 min.
P:\Active Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\Storm Design\Storm\22006-TR-55 SIDIEERII 3G-Tc
14

TR-55 Worksheet 3: Time of Concentration (Ta) or Travel Time (Ti)
Project By Date
McBride Subdivision AEN 6/24/2022
Location Checked Date
Union County
SLAB TYPE CB 3K Post Developed
Check one: 0 Tc ❑ Tt through subarea
Note:Space for as many as three segments per flow type can be used for each worksheet. Include a map,
schematic,or description of flow segments.
Segment ID AB
1. Surface description (table 3-1) Dense Grass
2. Manning's roughness coefficient, n (table 3-1) 0.24
3. Flow length, L (total L<_ 100 ft) ft 50
4. Two-year 24-hour rainfall, P2 in 3.6
5. Land slope, s ft/ft 0.036
_ 0.007 (nL)°8 Compute Tt hr 0.102 + + = 0.102 hr.
-
6. Tt o.e 0 4
P2 s 6.11 min.
Shallow concentrated flow
Segment ID BC
7. Surface description (paved or unpaved) Unpaved
8. Flow length, L ft 280
9. Watercourse slope, s ft/ft 0.041
10. Average velocity, V(figure 3-1) ft/s 3.27
L Compute Tt hr 0.024 + + = 0.024 hr.
11. Tt= —
3600 V 1.43 min.
20. Watershed or subarea T,or Tt (add Tt in steps 6, 11 and 19) 0.13 hr I
7.54 min.
P:\Active Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\Storm Design\Storm\22006-TR-55$TC3a3K -Tc
15

TR-55 Worksheet 3: Time of Concentration (Ta) or Travel Time (Tt)
Project By Date
McBride Subdivision AEN 6/24/2022
Location Checked Date
Union County
DI 3U Post Developed
Check one: 0 Tc ❑ Tt through subarea
Note:Space for as many as three segments per flow type can be used for each worksheet. Include a map,
schematic,or description of flow segments.
Segment ID AB
1. Surface description (table 3-1) Dense Grass
2. Manning's roughness coefficient, n (table 3-1) 0.24
3. Flow length, L (total L<_ 100 ft) ft 50
4. Two-year 24-hour rainfall, P2 in 3.6
5. Land slope, s ft/ft 0.05
_ 0.007 (nL)°8 Compute Tt hr 0.089 + + = 0.089 hr.
-
6. Tt o.e 0 4
P2 s 5.36 min.
Shallow concentrated flow
Segment ID BC
7. Surface description (paved or unpaved) Unpaved
8. Flow length, L ft 220
9. Watercourse slope, s ft/ft 0.073
10. Average velocity, V(figure 3-1) ft/s 4.36
L Compute Tt hr 0.014 + + = 0.014 hr.
11. Tt= —
3600 V 0.84 min.
20. Watershed or subarea T,or Tt (add Tt in steps 6, 11 and 19) 0.10 hr I
6.20 min.
P:\Active Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\Storm Design\Storm\22006-TR-55 POSTDdIs9U -Tc
16

TR-55 Worksheet 3: Time of Concentration (Ta) or Travel Time (Ti)
Project By Date
McBride Subdivision AEN 6/24/2022
Location Checked Date
Union County
FES 8B Post Developed
Check one: 0 Tc ❑ Tt through subarea
Note:Space for as many as three segments per flow type can be used for each worksheet. Include a map,
schematic,or description of flow segments.
Segment ID AB
1. Surface description (table 3-1) Dense Grass
2. Manning's roughness coefficient, n (table 3-1) 0.24
3. Flow length, L (total L<_ 100 ft) ft 100
4. Two-year 24-hour rainfall, P2 in 3.6
5. Land slope, s ft/ft 0.013
_ 0.007 (nL)°8 Compute Tt hr 0.266 + + = 0.266 hr.
-
6. Tt o.e 0 4
P2 s 15.98 min.
Shallow concentrated flow
Segment ID BC
7. Surface description (paved or unpaved) Unpaved
8. Flow length, L ft 1290
9. Watercourse slope, s ft/ft 0.026
10. Average velocity, V(figure 3-1) ft/s 2.60
L Compute Tt hr 0.138 + + = 0.138 hr.
11. Tt= -
3600 V 8.26 min.
20. Watershed or subarea T,or Tt (add Tt in steps 6, 11 and 19) 0.40 hr I
24.25 min.
P:\Active Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\Storm Design\Storm\22006-TR-55 POSERS 8B-Tc
17

MCBRIDE SUBDIVISION
HEMB Y BRIDGE, NORTH CAROLINA
DROP INLET
CALCULATIONS
18

10 YR YARD INLET DEPTH
Name Drain. Runoff Time of Rainfall Q=CIA/Kc Cross Cross Total Depth d Gutter Spread W/T Grate Grate Intercept
Area A Coeff.C Conc. Intens. Slope Sx Slope Sw Gutter Width T Length Width Flow Qi
Flow
(acres) (min) (inch/hr) (cfs) (cfs) (ft) (ft) (ft) (ft) (ft) (cfs)
DI 1D 0.48 0.6 5 7.51 2.16 0.02 0.05 2.16 0.27 2 10.478 0.191 3 2 2.16
DI 1C 0.67 0.6 5 7.51 3.042 0.02 0.05 3.042 0.326 2 13.29 0.15 3 2 3.042
DI 1P 0.52 0.6 5 7.51 2.378 0.02 0.05 2.378 0.284 2 11.202 0.179 3 2 2.378
DI 2D 0.45 0.6 5 7.51 2.058 0.02 0.05 2.058 0.263 2 10.128 0.197 3 2 2.058
SLAB TYPE CB 2C 2.16 0.45 8.25 6.714 6.591 0.02 0.05 6.591 0.422 2 18.122 0.11 4 4 6.591
DI 2L 0.52 0.6 5 7.51 2.36 0.02 0.05 2.36 0.283 2 11.144 0.179 3 2 2.36
DI 7G 0.46 0.6 5 7.51 2.069 0.02 0.05 2.069 0.263 2 10.167 0.197 3 2 2.069
DI 7S 0.571 0.6 5 7.51 2.587 0.02 0.05 2.587 0.298 2 11.878 0.168 3 2 2.587
DI 7U 0.47 0.6 5 7.51 2.13 0.02 0.05 2.13 0.268 2 10.375 0.193 3 2 2.13
DI 7T 0.41 0.6 5 7.51 1.857 0.02 0.05 1.857 0.248 2 9.424 0.212 3 2 1.857
DI 7H 0.45' 0.6 5 7.51 2.032 0.02 0.05 2.032 0.261 2 10.037 0.199 3 2 2.032
DI 7K 0.52 0.6 5 7.51 2.341 0.02 0.05 2.341 0.282 2 11.081 0.18 3 2 2.341
DI 7L 0.36 0.6 5 7.51 1.632 0.02 0.05 1.632 0.232 2 8.605 0.232 3 2 1.632
DI 1G 0.74 0.6 5 7.51 3.368 0.02 0.05 3.368 0.345 2 14.26 0.14 3 2 3.368
DI 1R 0.38 0.6 5 7.51 1.729 0.02 0.05 1.729 0.239 2 8.963 0.223 3 2 1.729
SLAB TYPE CB 3K 1.75 0.45 7.5 6.897 5.491 0.02 0.05 5.491 0.421 2 18.041 0.111 3 3 5.491
SLAB TYPE CB 3G 1.58 0.45 7.85 6.812 4.877 0.02 0.05 4.877 0.314 2 12.69 0.158 4 4 4.877
DI 3F 0.50 0.6 5 7.51 2.25 0.02 0.05 2.25 0.276 2 10.779 0.186 3 2 2.25
SLAB TYPE CB 2M 1.09 0.45 9 6.53 3.237 0.02 0.05 3.237 0.298 2 11.898 0.168 5 5 3.237
DI SD 0.63 0.6 5 7.51 2.88 0.02 0.05 2.88 0.316 2 12.796 0.156 3 2 2.88
DI 5J 0.45 0.6 5 7.51 2.054 0.02 0.05 2.054 0.262 2 10.115 0.198 3 2 2.054
DI 4F 1.02 0.45 5 7.51 3.479 0.02 0.05 3.479 0.352 2 14.583 0.137 3 2 3.479
DI 4G 0.75 0.45 6.2 7.216 2.46 0.02 0.05 2.46 0.289 2 11.469 0.174 3 2 2.46
DI 3E 0.59 0.6 5 7.51 2.685 0.02 0.05 2.685 0.304 2 12.189 0.164 3 2 2.685
DI 3S 0.38 0.6 5 7.51 1.714 0.02 0.05 1.714 0.238 2 8.907 0.225 3 2 1.714
SLAB TYPE CB 6J 0.64 0.6 5 7.51 2.928 0.02 0.05 2.928 0.348 2 14.398 0.139 2 2 2.928
DI 6K 0.45 0.6 5 7.51 2.031 0.02 0.05 2.031 0.261 2 10.035 0.199 3 2 2.031
DI 6L 0.34 0.6 5 7.51 1.557 0.02 0.05 1.557 0.227 2 8.325 0.24 3 2 1.557
DI 6H 0.52 0.6 5 7.51 2.342 0.02 0.05 2.342 0.282 2 11.084 0.18 3 2 2.342
DI 61 0.52 0.45 5 7.51 1.783 0.02 0.05 1.783 0.243 2 9.161 0.218 3 2 1.783
19

MCBRIDE SUBDIVISION
HEMB Y BRIDGE, NORTH CAROLINA
INLET SPREAD
CALCULATIONS
Note:
Inlet spread was calculated and measurements were taken to ensure the spread did not top
the crown of the road on local streets, at least one half of the travel lane in each direction is
free of water on the collector roads, and the velocities do not exceed 8 fps.
20

4 INCH/HOUR SPREAD
Name Drain. Runoff Tc Rainfall Q=CIA/Kc Long. Cross Cross Prey. Total Depth d Gutter Spread W/T Inlet Type Grate Grate Curb Curb Intercept Bypass Bypass
Area A Coeff.C Intens. Slope Slope Sx Slope Bypass Gutter Width T Length Width Opening Opening Flow Qi Flow Structure
SL Sw Flow Flow Length Height Qb
(acres) (min) (inch/hr) (cfs) (cfs) (cfs) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (cfs) (cfs)
CB 1F 0.325 0.6 5 4 0.786 -1 0.021 0.05 0.129 0.915 0.174 2 5.553 0.36 Combination 3 2 3 0.333 0.915 0---
DBL CB 1E 0.589 0.6 5 4 1.426 -1 0.021 0.05 0.197 1.624 0.193 2 6.476 0.309 Combination 6 2 6 0.333 1.624 0---
CB 2F 0.485 0.6 5 4 1.175 -1 0.021 0.05 0 1.175 0.196 2 6.63 0.302 Combination 3 2 3 0.333 1.175 0---
CB 2E 0.495 0.6 5 4 1.199 -1 0.021 0.05 0 1.199 0.166 2 5.163 0.387 Combination 3 2 4 0.333 1.199 0---
CB 2A 0.412 0.6 5 4 0.997 0.02 0.021 0.05 0 0.997 0.159 2 4.844 0.413 Combination 3 2 3 0.333 0.868 0.129 CB 1F
CB 2J 0.321 0.6 5 4 0.777 -1 0.021 0.05 0.245 1.022 0.183 2 6.01 0.333 Combination 3 2 3 0.333 1.022 0---
CB 2H 0.253 0.6 5 4 0.611 -1 0.021 0.05 0 0.611 0.145 2 4.149 0.482 Combination 3 2 3 0.333 0.611 0---
CB 7D 0.210 0.6 5 4 0.507 0.04 0.021 0.05 0.016 0.523 0.114 2 2.65 0.755 Combination 3 2 3 0.333 0.519 0.004 CB 7B
CB 7C 0.329 0.6 5 4 0.795 -1 0.021 0.05 0.305 1.1 0.159 2 4.861 0.411 Combination 3 2 4 0.333 1.1 0---
CB 7A 0.403 0.6 5 4 0.976 -1 0.021 0.05 0 0.976 0.179 2 5.812 0.344 Combination 3 2 3 0.333 0.976 0---
CB 7Q 0.470 0.6 5 4 1.138 0.015 0.021 0.05 0 1.138 0.174 2 5.556 0.36 Combination 3 2 3 0.333 0.941 0.197 CB 7P
CB 7P 0.279 0.6 5 4 0.674 0.02 0.021 0.05 0.197 0.871 0.152 2 4.514 0.443 Combination 3 2 3 0.333 0.779 0.093 CB 7F
CB 7N 0.283 0.6 5 4 0.686 0.02 0.021 0.05 0.241 0.927 0.155 2 4.663 0.429 Combination 3 2 3 0.333 0.818 0.108 CB 7M
CB 7M 0.041 0.6 5 4 0.099 0.033 0.021 0.05 0.108 0.208 0.083 2 1.667 1.199 Combination 3 2 3 0.333 0.208 0 CB 7J
DBL CB 2B 0.620 0.6 5 4 1.499 0.018 0.021 0.05 0 1.499 0.185 2 6.105 0.328 Combination 6 2 6 0.333 1.302 0.197 DBL CB 1E
CB 3L 0.586 0.6 5 4 1.419 0.015 0.021 0.05 0 1.419 0.187 2 6.167 0.324 Combination 3 2 3 0.333 1.114 0.305 CB 7C
CB 3A 0.524 0.6 5 4 1.267 0.015 0.021 0.05 0 1.267 0.18 2 5.849 0.342 Combination 3 2 3 0.333 1.022 0.245 CB 2J
CB 7R 0.519 0.6 5 4 1.257 0.015 0.021 0.05 0 1.257 0.18 2 5.826 0.343 Combination 3 2 3 0.333 1.016 0.241 CB 7N
CB 7F 0.535 0.6 5 4 1.294 0.04 0.021 0.05 0.093 1.386 0.158 2 4.801 0.417 Combination 3 2 3 0.333 1.196 0.19---
CB 7J 0.272 0.6 5 4 0.658 0.04 0.021 0.05 0 0.658 0.123 2 3.116 0.642 Combination 3 2 3 0.333 0.642 0.016 CB 7D
CB 7B 0.048 0.7 5 4 0.134 0.02 0.021 0.05 0.004 0.138 0.079 2 1.572 1.272 Combination 3 2 3 0.333 0.138 0 CB 7C
DBL CB 1N 0.794 0.6 5 4 1.921 -1 0.021 0.05 0 1.921 0.21 2 7.293 0.274 Combination 6 2 6 0.333 1.921 0---
CB 1M 0.133 0.7 5 4 0.374 -1 0.021 0.05 0 0.374 0.118 2 2.88 0.694 Combination 3 2 3 0.333 0.374 0---
CB 1K 0.034 0.7 5 4 0.095 0.025 0.021 0.05 0 0.095 0.066 2 1.315 1.52 Combination 3 2 3 0.333 0.095 0 CB 1J
CB 11 0.518 0.6 5 4 1.254 0.018 0.021 0.05 0 1.254 0.175 2 5.611 0.356 Combination 3 2 3 0.333 1.027 0.228---
CB 1H 0.427 0.6 5 4 1.033 0.018 0.021 0.05 0.441 1.474 0.184 2 6.056 0.33 Combination 3 2 3 0.333 1.16 0.313---
DBL CB 3H 0.360 0.7 5 4 1.017 -1 0.021 0.05 0.094 1.111 0.161 2 4.937 0.405 Combination 6 2 6 0.333 1.111 0---
CB 5C 0.292 0.6 5 4 0.708 0.015 0.021 0.05 0.004 0.712 0.149 2 4.373 0.457 Combination 3 2 3 0.333 0.647 0.065 CB 3D
CB 5B 0.710 0.6 5 4 1.718 0.019 0.021 0.05 0.2 1.919 0.198 2 6.706 0.298 Combination 3 2 3 0.333 1.422 0.497 DBL CB 3J
CB 5H 0.686 0.5 5 4 1.384 0.036 0.021 0.05 0 1.384 0.161 2 4.91 0.407 Combination 3 2 3 0.333 1.183 0.2 CB 5B
CB 5G 0.217 0.6 5 4 0.526 0.038 0.021 0.05 0 0.526 0.115 2 2.7 0.741 Combination 3 2 3 0.333 0.522 0.004 CB 5F
CB 5F 0.215 0.6 5 4 0.519 0.038 0.02 0.05 0.004 0.524 0.114 2 2.718 0.736 Combination 3 2 3 0.333 0.519 0.004 CB 5C
CB SL 0.504 0.5 5 4 1.017 -1 0.02 0.05 0 1.017 0.183 2 6.145 0.325 Combination 3 2 3 0.333 1.017 0---
CB 5K 0.125 0.7 5 4 0.354 0.038 0.021 0.05 0 0.354 0.099 3 1.979 1.516 Combination 3 2 3 0.333 0.354 0 CB 5G
CB 4C 0.223 0.7 5 4 0.63 0.01 0.021 0.05 0 0.63 0.153 2 4.566 0.438 Combination 3 2 3 0.333 0.569 0.06 CB 4A
CB 4B 0.582 0.6 5 4 1.408 0.01 0.021 0.05 0 1.408 0.199 2 6.741 0.297 Combination 3 2 3 0.333 1.077 0.331 CB 4E
CB 4D 0.053 0.7 5 4 0.148 0.01 0.021 0.05 0.01 0.158 0.094 2 1.883 1.062 Combination 3 2 4 0.333 0 0.158 CB 3T
CB 3T 0.117 0.7 5 4 0.331 -1 0.021 0.05 0.158 0.489 0.132 2 3.519 0.568 Combination 3 2 3 0.333 0.489 0---
CB 3D 0.577 0.6 5 4 1.397 0.015 0.021 0.05 0.065 1.462 0.188 2 6.253 0.32 Combination 3 2 3 0.333 1.139 0.323---
CB 3C 0.483 0.6 5 4 1.169 0.015 0.021 0.05 0 1.169 0.175 2 5.628 0.355 Combination 3 2 3 0.333 0.96 0.208 CB 3B
CB 3B 0.048 0.6 5 4 0.117 0.015 0.021 0.05 0.208 0.326 0.114 2 2.682 0.746 Combination 3 2 3 0.333 0.323 0.002---
CB 3R 0.195 0.6 5 4 0.472 -1 0.02 0.05 0 0.472 0.13 2 3.485 0.574 Combination 3 2 3 0.333 0.472 0---
CB 3Q 0.036 0.6 5 4 0.086 0.03 0.021 0.05 0 0.086 0.061 2 1.222 1.637 Combination 3 2 3 0.333 0.086 0 CB 3M
CB 3P 0.121 0.6 5 4 0.292 0.03 0.021 0.05 0 0.292 0.096 2 1.93 1.036 Combination 3 2 3 0.333 0.292 0 CB 3U
CB 3N 0.402 0.6 5 4 0.974 -1 0.021 0.05 0.231 1.205 0.199 2 6.75 0.296 Combination 3 2 3 0.333 1.205 0---
CB 3M 0.101 0.7 5 4 0.285 0.018 0.021 0.05 0 0.285 0.106 2 2.277 0.878 Combination 3 2 3 0.333 0.285 0 CB 3T
CB 1Q 0.742 0.6 5 4 1.795 0.019 0.021 0.05 0 1.795 0.194 2 6.507 0.307 Combination 3 2 3 0.333 1.353 0.441 CB 1H
DBL CB 3J 0.180 0.6 5 4 0.435 -1 0.021 0.05 0.497 0.932 0.149 2 4.351 0.46 Combination 6 2 6 0.333 0.932 0---
CB 4E 0.342 0.6 5 4 0.828 0.01 0.021 0.05 0.331 1.159 0.187 2 6.167 0.324 Combination 3 2 3 0.333 0.928 0.231 CB 3N
CB 3U 0.351 0.6 5 4 0.849 0.018 0.021 0.05 0 0.849 0.154 2 4.612 0.434 Combination 3 2 3 0.333 0.755 0.094 DBL CB 3H
21

4 INCH/HOUR SPREAD
Name Drain. Runoff Tc Rainfall Q=CIA/Kc Long. Cross Cross Prey. Total Depth d Gutter Spread W/T Inlet Type Grate Grate Curb Curb Intercept Bypass Bypass
Area A Coeff.C Intens. Slope Slope Sx Slope Bypass Gutter Width T Length Width Opening Opening Flow Qi Flow Structure
SL Sw Flow Flow Length Height Qb
(acres) (min) (inch/hr) (cfs) (cfs) (cfs) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (cfs) (cfs)
CB 4A 0.107 0.7 5 4 0.303 0.01 0.021 0.05 0.06 0.364 0.128 2 3.325 0.601 Combination 3 2 3 0.333 0.354 0.01 CB 4D
CB 6G 0.240 0.6 5 4 0.58 0.04 0.021 0.05 0 0.58 0.118 2 2.856 0.7 Combination 3 2 3 0.333 0.572 0.008 DBL CB 6C
CB 6F 0.360 0.6 5 4 0.871 0.04 0.021 0.05 0 0.871 0.136 2 3.715 0.538 Combination 3 2 3 0.333 0.82 0.051 DBL CB 6D
DBL CB 6D 0.624 0.6 5 4 1.509 -1 0.021 0.05 0.223 1.732 0.199 2 6.784 0.295 Combination 6 2 6 0.333 1.732 0---
DBL CB 6C 0.469 0.6 5 4 1.136 -1 0.02 0.05 0.014 1.149 0.164 2 5.185 0.386 Combination 6 2 6 0.333 1.149 0---
CB 6E 0.133 0.7 5 4 0.377 0.015 0.021 0.05 0 0.377 0.12 2 2.977 0.672 Combination 3 2 3 0.333 0.371 0.006 DBL CB 6C
CB 6B 0.441 0.6 5 4 1.068 0.015 0.021 0.05 0 1.068 0.17 2 5.387 0.371 Combination 3 2 3 0.333 0.896 0.172 DBL CB 6D
22

MCBRIDE SUBDIVISION
HEMB Y BRIDGE, NORTH CAROLINA
HW/D
CALCULATIONS
23

CHARLO 1TE-M ECKLENBURG STO RVI WATER DESIG NM ANUAL
FES 8B
-180 - 10,000
- 168 - 8,000 EXAMPLE (I) (2) (3)
- 156 - 6,000 0.42 Inches (3.5 feet) - 6,
- 6,
- 5,000 0.120 Os
- 144 - - 6, - - 5.
- 132 - 4,000 1 +► t ilt Nw - -- 4.
- 3,000 (I) 2.5 LI - 5. _ - 4.
- 120 - -
- (2) 2.1 7.4 - -
- 2,000 (3) 2.2 7.7 4, -
-
- 108 - - - 3. -
- 'D In feet - - -3.
- 96 - 1,000 - 3. - _
- 800 -
-
- 84 - 600 / ��- 2-� 2.
- 500 - -
- 72 - 400 // e - 2 -
_ - E.yj/ 3 - - 1.6
w - 300 - 1.5
o N = / cr- -
Z - 60 v - 200 �- 1.8
z - - 1.0 _ -
c - 5a ar/ as _ - -
I- /w - 100 Z
J - 48 - 80 I
Q -
V / V - 60 a - 1.0 - 1.0
42 w
w0 0 _ 50 HW SCALE ENTRANCE - I.0 -
- 40 p -
TYPE W
w r
- 36 - - 9 - .9
w - 30 (I) Square edge vt
- _ headwall 0 '- •9 - -
a - 33 _ a
Q -_ 20 (2) Groove end.ith w -
30 -headwall S .8 ,- .8
(3) Groove end - •8
- 27 - projecting -
10
- r -.7 .7-
- 24 _ 8 .7
- 6 To use scale(2)or(3)project -
- 21 -- 5 horizontolly to scale (I),then -
- 4 use straight Inclined line through
0 and 0 sculls,or reverse os - .6
- 3 illustrated. ,- .6 - .6
- 18 -
- 2 -
-
BUREAU OF PUBLIC ROADS JAN.19E3
- 15
-- .5 - .5
- 1.0 HEADWATER SCALES 2 d3 " •5
REVISED MAY 1964
- 12
Figure 5C-5 Headwater Depth for Concrete Pipe Culverts with Inlet Control
Source:www.deldot.gov/inform lion/pubs_form s'm aivals/road_design/pdf/supp_figures_chap6.pdf
Q 25 YEAR = 21.33 CFS
5-32
24

MCBRIDE SUBDIVISION
HEMB Y BRIDGE, NORTH CAROLINA
FES & RIP RAP
CALCULATIONS
25

3D0I fi!-
Outlet W - Do + 0.4La 120 — : j ;I ,::
diameter(Do),. —�i� ' .-•• , I i. I • 1', I:i
La 110 i r.l III I.
¢jij]Ytal r3 0.5Do lil• t.:';' : ! : : ' n n 1
�nu, 1
100 •Mil:I�I`'I;'1 i1 ! . • , 1 1 ! 1,!!i1{„�r 11 1
'll` 'i ; !lit as : 1 1- 1 l I , A■mu■; ! 1) I
I, ■iiuw r I. ■
oj
90 :in I •.I• lit I' { ' , , I .1 I a�■m uu. a Irm
wa,. i n ' l
1 �f r ill '`! 11 I 1 1I ; . 1 i : r' 1 i���l'IIC' _ III
:1 } l II`
80 tIL !. a. I I: 1 1 t N I n■I
•' n � �. V. i111 :.• •ii, .. - M. 1 - it II
o�IA 70 �noww1 111 I) . . 'v '" v yI ■ ■ 'pii:
- 1 IIII 1k 1
,,,,,,..
, , .,„
T1j1IP!'
1ii
1,11.1 'II di
, .
.. ddk dial
:' Anll
o a MINIM 1 ■I W ' 1 1 II■II
40 p■111■I pI ♦. D �1111 I11' I Ir.
■I
I' 11■11■rlll■NIr- 11 I 1 1 . , i III'Il�t�l.�rl I
wruum■ ._ �." r t ��slj, r D r � . ' 1 Ii I.
' rr11■11■ In■■ J4 S. R� .i`:' �IA I� IIi1llh iI ■ i , i■�luuuur• a � J r � "�30 wrllr III►.il /■' • Nl tI' , ' r �� .. I.:.f:1.
1 w�u un■s• rT 1■r. �� � P� � �;�t! II .I r _ I�::�,:_ ,... . n.1i
itrrwrlr d■ulm�munesl ■ ► / r1 r ,1
20 Po w .Iiiwiiiiii g =21041!!!!IIM:1l111611in i Ia !i I u • �' n:rlrilr �1r1 W 0
J s11lVL.! 1v Ittuu 1"� �° / �!►J��,�'�',plh11�'.�iii; N
irliwii ���1ui111111'.r■1a:Ailii iiiirinl!i19I�ii1lIiG�1► , Ir�-i , < �ilim� it• I to
tttF{{'•4Fk , 1 I v,s V Agile sZ
0 it ■rlrwming■rr a I1 rl trl !•;I :j (11:: „� D a 1 cC
an,
YI I,o dj. tv �_ II/�t/�' :��I�
..'1 rr/i i V
3 5 10 20 5) 100 200 500 1000
Dischar = ft /sec)
Maximum Ta water Conditions
d (in.) Q(cfs) Description of Apron
1 FES 1A 48 61.38 » 18'L x 12'W x 18"D CLASS B APRON
2 FES 2 48 67.31 » 18'L x 12'W x 18"D CLASS B APRON
3 FES 6H 36 20.13 » 14'L x 10'W x 18"D CLASS B APRON
4 FES 8A 30 19.14 » 14'L x 10'W x 18"D CLASS B APRON
4 IDLEWILD 18 14.00 » 14'L x 10'W x 18"D CLASS B APRON
5 BMP 0S1 2X24" 53.00 » 14'L x 10'W x 18"D CLASS B APRON
6 BMP 0S2 36" 5.00 » 14'L x 10'W x 18"D CLASS B APRON
P:\Active Projects\DRB Group\Hemby Bridge Development,0155\Engineering\Calculations\Storm Design\Storm\20155-
FE xls

THE ISAACS GROUP
RIP RAP APRON DESIGN
McBride Subdivision
Hemby Bridge, North Carolina
Maximum Tailwater Conditions
D=OUTLET PIPE DIAMETER(in)
Do=OUTLET PIPE DIAMETER(ft)
La= LENGTH OF APRON (ft) [FROM FIGURE 8-2,CHARLOTTE STORMWATER DESIGN MANUAL](MINIMUM La=10
W=WIDTH OF APRON (ft) [W=Do+0.4 La]
Q= FLOW(cfs)
d50 =STONE SIZE (ft) [FROM FIGURE 8-2,CHARLOTTE STORMWATER DESIGN MANUAL]
FES 1A FES 2 FES 6A FES 8A IDLEWILD BMP BMP
OS1 OS2
D 48 48 36 30 18 34 36
Q 61.38 67.31 20.13 19.14 14.00 53.00 5.00
Do 4 4 3 2.5 1.5 2.83333 3
3D0 12 12 9 7.5 4.5 8.5 9
La 18 18 14 14 14 14 14
W 11.2 11.2 8.6 8.1 7.1 8.43333 8.6
d501 0.5 0.5 0.5 0.5 0.5 0.5 0.5
*MIN.APRON SIZE NOT TO BE LESS THAN 8'Wx11'Lx18"D CLASS B APRON
P:\Active Projects\DRB Group\Hemby Bridge Development9155\Engineering\Calculations\Storm Design\Storm\20155-
FE xls

MCBRIDE SUBDIVISION
HEMB Y BRIDGE, NORTH CAROLINA
SWALE CALCULATIONS
North American Green Erosion Control Materials Design Software was used to determine the
following:
• The normal depth of the swale under poorly maintained grass depth conditions.
• The vegetation stability when the grass is properly maintained by a homeowner.
• The temporary liner stability before the swale is stabilized with vegetation.
The drainage areas and swale slopes were determined from the construction drawings. The
retardance class was set to D (grass depth 2-6 inches) in the NAG software for a properly
maintained grass swale to determine vegetation stability. To determine the depth of swale with
6" of freeboard, the retardance class is set to B (grass depth 12-24 inches) for an under or no
maintained grass. Finally, the swale was modeled as unvegetated with a S75 temporary liner
to determine liner and dirt stability before grass has been established. Swales that were
unstable for any reason either were widened and/or lined with different temporary liners until
stabilization was achieved. If the calculations of the temporary linear showed a velocity of less
than 2 fps during a 10-year storm event then the temporary linear was removed.
28

GRASS SWALE TYPE-A
(North American Green-ECMDS Version 4.3 10/16/2022 08:19 PM
HYDRAULIC RESULTS
7511-i=0 i501
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal
(cfs) Period(hrs) _ Radius(ft) _ Depth(ft)
5.7 0.1 2.38 2.39 0.42 0.74 \.
i.0200
Q=CIA
C=0.45 1 I 11
1=7.26 Bottom
A-1.75 3.0 Width=1.00 ft 3.0
Q=5.70 CFS
1
LINER RESULTS Not to Scale
Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Sta le Pattern Phase r Class Type Density Shear Stress Shear Stress
(PA (psf]
Straight S75 nvegetated 1.55 0.93 1.67 STABLE
Staple D
TEMP. LINER
29

GRASS SWALE TYPE-A
(North American Green-ECMDS Version 4.3 10I16I2022 08:13 PM
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal Unreinforced Vegetation(n=0.030)
(cfs) Period(hrs) _ Radius(ft) Depth(ft)
5.7 0.1 3.46 1.65 0.35 0.59
S=0.0200
Q=CIA
C=0.45
1 I \'''' \
1=7.26
Bottom __I 1
A=1.75 3.0 Width=1.0 i0 ft 3.0
Q=5.70 CFS
LINER RESULTS Not to Scale
' Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern ' Shear Stress Shear Stress
(PO (psf)
Straight Unreinforced Vegetation C D Bunch >=95%. 3.33 0.74 4.50 STABLE
Soil Clay Loam 0.050 0.050 1 00 i STABLE
MAINTAINED COND.
30

GRASS SWALE TYPE-A
(North American Green-ECMDS Version 4.3 10/16/2022 08:18 PM
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal
Unreinforced Vegetation(n=0.100)
(cfs) Period(hrs) _ Radius(ft) Depth(ft)
5.7 0.1 1.41 4.04 0.55 1.01
Q=CIA
C=0.45
1 I \'''' \
1=7.26
Bottom _1 1
A=1.75 3.0 Width=1.00 ft 3.0
Q=5.70 CFS
LINER RESULTS Not to Scale
' Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern - _ _ ___ _- .-, ' Shear Stress Shear Stress
(psI) (psi)
Straight Unreinforced Vegetation B Bunch >=95% 5.73 1.26 4.56 STABLE
Soil Clay Loam 0.050 0.008 6.54 STABLE
UNMAINTAINED
CONDITION
31

GRASS SWALE TYPE-B
(North American Green-ECMDS Version 4.3 110IIIIIYI
HYDRAULIC RESULTS
S75(n=0.053)
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal
(cfs) Period(hrs) _ Radius(ft) Depth(ft)
17.1 0.1 2.03 3.51 0.45 0.60
S=0.0150
Q=CIA
C=0.45
1=7.26 1
I Bottom,\'''' '''' I 1
A=2.16 3.0 ',Alidth=4.00 ft 3.0
Q=7.06 CFS
LINER RESULTS Not to Scale
Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Phase' Class Type Density Shear Stress Shear Stress
(PA (PA
Straight S75 nvegetated r 1.55 0.56 2.74 STABLE
C. Staple D
TEMP. LINER
32

GRASS SWALE TYPE-B
(North American Green-ECMDS Version 4.3 10/ Illilkol
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal Unreinforced Vegetation(n=0.030)
(cfs) Period(hrs) _ Radius(ft) Depth(ft)
17.1 0.1 3.00 2.37 0.35 0.44
S=0.0150
Q=CIA
C=0.45
1=7.26 1
I Bottom,\''' / I 1
A=2.16 3.0 ',Alidth=4.00 ft 3.0
Q=7.06 CFS
LINER RESULTS Not to Scale
' Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern - _ .- rr i Shear Stress Shear Stress
(psf) (psf)
Straight Unreinforced Vegetation D Bunch >=95% 3.33 0.42 8.01 STABLE
Soil Clay Loam 0.050 0.028 1.78 STABLE
MAINTAINED
CONDITION
33

GRASS SWALE TYPE-B
(North American Green-ECMDS Version 4.3 10/ Illilkol
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal
Unreinforced Vegetation(n=0.100)
(cfs) Period(hrs) _ Radius(ft) _ Depth(ft)
17.1 0.1 1.28 5.53 0.59 0.85
S=am50
Q=CIA
C=0.45 1 I 11
1=7.26 3.0 \.A;•hjtf�ttorri lift 3.0
A=2.16
Q=7.06 CFS
LINER RESULTS Not to Scale
' Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern ' - - a .- i- s ' Shear Stress Shear Stress
(psf) (psf)
Straight Unreinforced Vegetation B Bunch >=95%. 5.73 0.79 7.23 STABLE
Soil Clay Loam 0.050 0.005 10.37 . STABLE
UNMAINTAINED
CONDITION
34

MCBRIDE SUBDIVISION
HEMB Y BRIDGE, NORTH CAROLINA
EROSION CONTROL CALCULATIONS
Narrative:
Erosion control measures have been designed in accordance with North Carolina
Department of Environment & Natural Resource requirements and standards. Erosion
control is maintained on the site via silt fence, diversion ditches, storm drainage inlet
protection and riser and skimmer basins. The sediment pond and skimmer have been
sized for the 10 year storm event.
35

MCBRIDE SUBDIVISION
HEMB Y BRIDGE, NORTH CAROLINA
Riser & Skimmer Sediment
Basins Calculations
36

RISER BASIN #1
The ISAACS GROUP Date 8/21/2023
McBride Subdivion Hemby Bridge,North Carolina
Riser Basin Design&Calculations(BASIN#1)
Total Time of Concentration,Tc 5.00 (min.)
i,10 yr.Rainfall Intensity(table 3-3: 7.26 (in./hr.)
C,Rainfall Runoff Coefficient 0.45
AD,Drainage Area to Structure(Pre-Developed; 1,657,367 (sq.ft.) 38.05 ac
Ad,Drainage Area to Structure(Post-Developed) 1,772,702 (sq.ft.) 40.70 ac
Drainage Area to Structure 40.696 (ac.)
Area of disturbance for structure 39.65 (ac.)
Clio,Peak Flow=CiA 132.953 (cfs)
Basin Design#1
Volume Calculation
Bottom of Basin Elevation= 634.00
Depth of Basin(to principal spillway) 3.00 (ft.)
Riser Inlet Elevation= 636.50 Diff.b/t Riser and Emer.Spillway= 3.50 ft.
Emergency Spillway Elev.= 638.00
Top of Dam Elevation = 641.33
Contour Area Area Volume Total
Elev. (sq.ft.) (ac.ft.) (cu.ft.) (cu.ft.)
634 55981 1.285 - -
635 60211 1.382 58,096 58,096
636 64479 1.480 62,345 120,441
636.5 68803 1.579 33,321 153,762
637 73185 1.680 35,497 189,259
639.5 84384 1.937 196,961 386,220
641 91274 2.095 131,744 517,963
Basin Volume Required(1800cu.ft./disturbed ac.)= 71,370 (cu.ft.)
Basin Volume Provided at Riser Crest= 153,762 (cu.ft.) Greater than required,therefore OK
Required Basin Surface Area(Q10.,sx435 sf)= 57,834 (sq.ft.)
As,Surface Area Provided= 68,803 (sq.ft.) Greater than required,therefore OK
See following sheet for Skimmer Size Calculation from Fairclothskimmer.com
37

Principal Spillway Riser Barrel Design:
i,2 yr.Rainfall Intensity(table 3-3: 2.22 (in./hr.)
Q2,Peak Flow=CiA= 40.65 (cfs)
Weir Length @ 637.37= 18 (in.)
Proposed Barrel Length(5.0'increments)= 55.0 (ft.)
Proposed Riser Diameter= 34 (in.)
Analyze Weir, Orifice and Barrel flow for limiting(controling)flow in principal spillway
Weir flow Q=CLH^1.5 cfs
C=3.1,H=Height b/t riser and emer.Spillway
L=Weir length
Orifice flov Q=CA(2gH)^0.5 cfs
C=0.6
H= height b/t riser and emergency spillway
Pipe flow Qp=(ag2gH)/')(1+Km+KpL) cfs
Km= 1
Kp= 0.0674 from table 8.07a
H= depth from bottom basin to emergency spillway
Minimum principal spillway flow= 15.13 No Good
Emergency Spillway Calculation:
Quo= 132.953 (cfs)
Qp= 15.127 (cfs)
Qe=Qio-QP= 117.826 (cfs)
Spillway Width= 30.0 (ft.) Spillway Elev.= 638
h= 1.20 (ft.) no good 3.30 ft of freeboard to top of dam>0.5 ft,therefore OK
ANTI-FLOTATION DEVICE
SIZED WITH PERM. BMP #1
OUTLET STRUCTURE SEE C4.8
38

SKIMMER BASIN #2
The ISAACS GROUP Date 10/19/2022
McBride Subdivion Hemby Bridge,North Carolina
Skimmer Basin Design&Calculations(BASIN#2)
Time of Concentration Calculation
Peak Flow Calculation
Total Time of Concentration,Tc 5.00 (min.)
i,10 yr.Rainfall Intensity(table 2.3) 7.26 (in./hr.)
C,Rainfall Runoff Coefficient 0.45
AD,Drainage Area to Structure(Pre-Developed; 347,654 (sq.ft.) 7.98(ac.)
Ad,Drainage Area to Structure(Post-Developed; 290,561 (sq.ft.) 6.67(ac.)
Drainage Area to Structure 7.981 (ac.)
Area of disturbance for structure 7.980 (ac.)
Q10,Peak Flow=CiA 26.074 (cfs)
Skimmer Basin Design#2
Volume Calculation
Bottom of Basin Elevation= 636.00
Depth of Basin(to spillway) 4.00 (ft.)
Emergency Spillway Elev.= 640.00
Top of Dam Elevation = 642.00 Diff.b/t spillway and top dam=1.5 feet
Contour Area Area Volume Total
Elev. (sq.ft.) (ac.ft.) (cu.ft.) (cu.ft.)
636.00 480 0.011
636.50 2,469 0.057 737 737
637.00 5,563 0.128 2,008 2,745
638.00 6,428 0.148 5,996 8,741
638.50 6,879 0.158 3,327 12,068
639.00 10,455 0.240 4,334 16,401
640.00 11,780 0.270 11,118 27,519
640.50 12,464 0.286 6,061 33,580
641.00 13,161 0.302 6,406 39,986
642.00 14,599 0.335 13,880 53,866
Basin Volume Required(1800cu.ft./dist.ac)= 14,364 (cu.ft.)
Basin Volume Provided at Spillway= 27,519 (cu.ft.) Greater than required,therefore OK
Required Basin Surface Area(Q10x325 sq.ft.)= 8,474 (sq.ft.)
As,Surface Area Provided= 11,118 (sq.ft.) Greater than required,therefore OK
See following sheet for Skimmer Size Calculation from Fairclothskimmer.com
Emergency Spillway Calculation: Q=CLH^1.5
C= 2.8
Q1o= 26.074 (cfs)
Spillway Width= 36.0 (ft.) 36'combines the outlet 4x4 outlet structure @ 640.00&20'spillway at 640.50
h= 0.41 (ft.) <0.5',Therefore OK
39

RISER BASIN #3
The /SAACS GROUP Date 10/19/2022
McBride Subdivion Hemby Bridge,North Carolina
Riser Basin Design&Calculations(BASIN#3)
Total Time of Concentration,Tc 5.00 (min.)
i,10 yr.Rainfall Intensity(table 3-3) 7.26 (in./hr.)
C,Rainfall Runoff Coefficient 0.45
AD,Drainage Area to Structure(Pre-Developed) 581,400 (sq.ft.) 13.35 ac
Ad,Drainage Area to Structure(Post-Developed) (sq.ft.) 0.00 ac
Drainage Area to Structure 13.347 (ac.)
Area of disturbance for structure 13.5 (ac.)
Clio,Peak Flow=CiA 43.605 (cfs)
Basin Design#1
Volume Calculation
Bottom of Basin Elevation= 646.00
Depth of Basin(to principal spillway) 3.50 (ft.)
Riser Inlet Elevation= 649.50 Diff.b/t Riser and Emer.Spillway= 1.00 ft.
Emergency Spillway Elev.= 650.50
Top of Dam Elevation = 652.00
Contour Area Area Volume Total
Elev. (sq.ft.) (ac.ft.) (cu.ft.) (cu.ft.)
646 2300 0.053 - -
646.5 14608 0.335 4,227 4,227
648 16970 0.390 23,684 27,911
649.5 19460 0.447 27,323 55,233
650.5 21190 0.486 20,325 75,558
651 22077 0.507 10,817 86,375
652 23892 0.548 22,985 109,359
Basin Volume Required(1800cu.ft./disturbed ac.)= 24,300 (cu.ft.)
Basin Volume Provided at Riser Crest= 55,233 (cu.ft.) Greater than required,therefore OK
Required Basin Surface Area(Q1ox435 sf)= 18,968 (sq.ft.)
As,Surface Area Provided= 19,460 (sq.ft.) Greater than required,therefore OK
See following sheet for Skimmer Size Calculation from Fairclothskimmer.com
40

RISER BASIN #3
Principal Spillway Riser Barrel Design:
i,2 yr.Rainfall Intensity(table 3-3) 2.22 (in./hr.)
Q2,Peak Flow=CiA= 13.33 (cfs)
Proposed Barrel Dia.= 24 (in.)
Proposed Barrel Length(5.0'increments)= 55.0 (ft.)
Proposed Riser Diameter= 30 (in.)
Analyze Weir,Orifice and Barrel flow for limiting(controling)flow in principal spillway
Weir flow Q=CLH^1.5 cfs
C=3.1,H=Height b/t riser and emer.Spillway
L=Circumference of Riser
Orifice floe Q=CA(2gH)^0.5 cfs
C=0.6
H= height b/t riser and emergency spillway
Pipe flow Qp=(a'2gH)/'(1+K,,+K,L) cfs
Km= 1
Kp= 0.0459 from table 8.07a
H= depth from bottom basin to emergency spillway
Minimum principal spillway flow= 23.62 Greater than Qz,therefore OK
Emergency Spillway Calculation:
Clio= 43.605 (cfs)
Qp= 23.623 (cfs)
Qe=Qio-QP= 19.982 (cfs)
Spillway Width= 20.0 (ft.)
h= 0.48 (ft.) Less than o.5',Therefore OK
Concrete Anchor Buoyancy Calculation
Riser Height(h)= 3.50 (ft.) crest el.to inv.out
Riser Outside Length(I)= 2.80 (ft.)
Riser Outside Width(w)= 2.80 (ft.)
Riser Wall Thickness(t)= 0.00 (ft.)
Vol.of riser(VR)= 27.4 (ft3) VR =I x w x h
Wt.of H2O displaced(WR)= 1712.3 (Ibs) WR =62.4 lbs/ft3 x VR
Conc.pad thickness= 10 (in.)
Conc.pad width/length= 6 (ft.)
Vol.of conc.pad(Vc)= 30.00 (ft3)
Wt.of H2O displaced(Wc)= 1872 (Ibs) We =62.4 lbs/ft3 x Vc
Tot.Wt.of H2O displaced(WD)= 3584.3 (Ibs) WD=WR+We
Unit wt.of concrete = 150 (Ibs/ft3)
Wt.of conc.pad = 4500 (Ibs)
Riser Outside Area(Ao)= 0 (ft2)
Riser Inside Area(Ai)= 0 (ft2)
Wt.of Riser Structure= 0 (Ibs)
Factor of safety= wt.Conc.Pad+wt.Riser Structure
wt.of H2O displaced
F.S.= 1.26 OK
41

SKIMMER BASIN #4
The ISAACS GROUP Date 10/19/2022
McBride Subdivion Hemby Bridge,North Carolina
Skimmer Basin Design&Calculations(BASIN#4)
Time of Concentration Calculation
Peak Flow Calculation
Total Time of Concentration,Tc 5.00 (min.)
i,10 yr.Rainfall Intensity(table 2.3) 7.26 (in./hr.)
C,Rainfall Runoff Coefficient 0.45
AD,Drainage Area to Structure(Pre-Developed; 189,520 (sq.ft.) 4.35(ac.)
Ad,Drainage Area to Structure(Post-Developed: (sq.ft.) 0.00(ac.)
Drainage Area to Structure 4.351 (ac.)
Area of disturbance for structure 4.351 (ac.)
Q1a,Peak Flow=CiA 14.214 (cfs)
Skimmer Basin Design#2
Volume Calculation
Bottom of Basin Elevation= 647.50
Depth of Basin(to spillway) 3.00 (ft.)
Emergency Spillway Elev.= 650.50
Top of Dam Elevation = 652.00 Diff.b/t spillway and top dam=1.5 feet
Contour Area Area Volume Total
Elev. (sq.ft.) (ac.ft.) (cu.ft.) (cu.ft.)
647.50 1,110 0.025
648.50 3,336 0.077 2,223 2,223
650.00 4,510 0.104 5,885 8,108
651.00 5,364 0.123 2,574 13,041
652.00 6,274 0.144 5,819 18,860
Basin Volume Required(1800cu.ft./dist.ac)= 7,831 (cu.ft.)
Basin Volume Provided at Spillway= 10,468 (cu.ft.) Greater than required,therefore OK
Required Basin Surface Area(C10x325 sq.ft.)= 4,620 (sq.ft.)
As,Surface Area Provided= 4,930 (sq.ft.) Greater than required,therefore OK
See following sheet for Skimmer Size Calculation from Fairclothskimmer.corn
Emergency Spillway Calculation: Q=CLH^1.5
C= 2.8
Q1o= 14.214 (cfs)
Spillway Width= 15.0 (ft.)
h= 0.49 (ft.) <0.5',Therefore OK
42

SKIMMER BASIN #5
The ISAACS GROUP Date 10/19/2022
McBride Subdivion Hemby Bridge,North Carolina
Skimmer Basin Design&Calculations(BASIN#5)
Time of Concentration Calculation
Peak Flow Calculation
Total Time of Concentration,Tc 5.00 (min.)
i,10 yr.Rainfall Intensity(table 2.3) 7.26 (in./hr.)
C,Rainfall Runoff Coefficient 0.45
AD,Drainage Area to Structure(Pre-Developed; 194,532 (sq.ft.) 4.47(ac.)
Ad,Drainage Area to Structure(Post-Developed: (sq.ft.) 0.00(ac.)
Drainage Area to Structure 4.466 (ac.)
Area of disturbance for structure 4.466 (ac.)
Q1a,Peak Flow=CiA 14.590 (cfs)
Skimmer Basin Design#2
Volume Calculation
Bottom of Basin Elevation= 655.50
Depth of Basin(to spillway) 3.00 (ft.)
Emergency Spillway Elev.= 658.50
Top of Dam Elevation = 660.00 Diff.b/t spillway and top dam=1.5 feet
Contour Area Area Volume Total
Elev. (sq.ft.) (ac.ft.) (cu.ft.) (cu.ft.)
655.50 1,420 0.033
656.50 3,569 0.082 2,495 2,495
657.50 4,346 0.100 3,958 6,452
659.00 5,619 0.129 2,700 13,915
660.00 6,537 0.150 6,078 19,993
Basin Volume Required(1800cu.ft./dist.ac)= 8,039 (cu.ft.)
Basin Volume Provided at Spillway= 11,215 (cu.ft.) Greater than required,therefore OK
Required Basin Surface Area(C10x325 sq.ft.)= 4,742 (sq.ft.)
As,Surface Area Provided= 5,180 (sq.ft.) Greater than required,therefore OK
See following sheet for Skimmer Size Calculation from Fairclothskimmer.corn
Emergency Spillway Calculation: Q=CLH^1.5
C= 2.8
Q1o= 14.590 (cfs)
Spillway Width= 15.0 (ft.)
h= 0.49 (ft.) <0.5',Therefore OK
43

McBride Subdivision
Faircloth Skimmer Sizing Calculation
Basin No. 1
Volume required = 71,370 cf
Volume provided = 153,762 cf
1. Size skimmer using a 2 day drawdown based on required volume
Calculate Skimmer Size
Basin Volume in Cubic Feet 71,370 Cu.Ft Skimmer Size 6.0 Inch
Days to Drain* 2 Days r a ci e Onfice Radius 2.5 Inch[es]
Orifice Diameter 5.0 Inch[es]
'In NC a:suma 3 day;to drain
2. Check Skimmer size with a 5 day drawdown per provided volume
Calculate Skimmer Size
Basin Volume in Cubic Feet 153,762 Cu.Ft Skimmer Size 5.0 Inch
Days to Drain* 5 Days Rage 1 Orifice Radius 2.4 Inch[es]
Orifice Diameter 4.9 inch[es]
'In NC assume 3 days to drain
Use 6.0" skimmer with 5.0" diameter orifice.
Basin No. 2
Volume required = 14,364 cf
Volume provided = 27,519 cf
1. Size skimmer using a 2 day drawdown based on required volume
Calculate Skimmer Size
Basin Volume in Cubic Feet 14,364 Cu.Ft Skimmer Size 3.0 Inch
Days to Drain* 2 Days Orifice Radius 1.3 Inch[es)
Orifice Diameter 2.6 Inch[es)
in NC assume 3 days to drain
2. Check Skimmer size with a 5 day drawdown per provided volume
Calculate Skimmer Size
Basin Volume in Cubic Feet 27,519 Cu.Ft Skimmer Size 2.5 Inch
Days to Drain* 5 Days Orifice Radius 1.2 Inch(es)
Orifice Diameter 2.3 Inch[es]
in NC assume 3 days to drain
Use 3.0" skimmer with 2.6" diameter orifice.
44

Basin No. 3
Volume required = 24,300 cf
Volume provided = 55,233 cf
3. Size skimmer using a 2 day drawdown based on required volume
Calculate Skimmer Size
Basin Volume in Cubic Feet 24,300 Cu.Ft Skimmer Size 4.0 Inch
Days to Drain* 2 Days Orifice Radius 1.6 Inch[es]
Orifice Diameter 3.1 Inch[es]
'In NC assume 3 days to drain
4. Check Skimmer size with a 5 day drawdown per provided volume
Calculate Skimmer Size
Basin Volume in Cubic Feet 55,233 Cu.Ft Skimmer Size 4.0 Inch
Days to Drain` 5 Days Orifice Radius 1.5 Inch[es]
Orifice Diameter 3.0 Inchles]
'In NC assume 3 days to drain
Use 4.0" skimmer with 3.1" orifice.
Basin No.4
Volume required = 7,831 cf
Volume provided = 10,468 cf
1. Size skimmer using a 2 day drawdown based on required volume
Calculate Skimmer Size
Basin Volume in Cubic Feet 7,831 Cu.Ft Skimmer Size 2.5 Inch
Days to Drain` 2 Days Orifice Radius 1.0 Inch[es]
Orifice Diameter 2.0 Inch[es]
'In I1C assume 3 days to dram
2. Check Skimmer size with a 5 day drawdown per provided volume
Calculate Skimmer Size
Basin Volume in Cubic Feet 10,468 Cu.Ft Skimmer Size 2.0 Inch
Days to Drain* 5 Days Orifice Radius 0.8 Inch[es]
Orifice Diameter 1.5 Inch[es]
'In tic assume 3 days to drain
Use 2.5" skimmer with 2.0" orifice.
45

Basin No. 5
Volume required = 8,039 cf
Volume provided = 11,215 cf
1. Size skimmer using a 2 day drawdown based on required volume
Calculate Skimmer Size
Basin Volume in Cubic Feet 8,039 Cu.Ft Skimmer Size 2.5 Inch
Days to Drain* 2 Days Orifice Radius 1.0 Inch[es]
Orifice Diameter 2.0 Inch[es]
'In tJC assume 3 days to dram
2. Check Skimmer size with a 5 day drawdown per provided volume
Calculate Skimmer Size
Basin Volume in Cubic Feet 11,215 Cu.Ft Skimmer Size 2.0 Inch
Days to Drain' 5 Days Orifice Radius 0.8 Inch[es]
Orifice Diameter 1.6 Inch[es]
'In tJC assume 3 days to drain
Use 2.5" skimmer with 2.0" orifice.
46

MCBRIDE SUBDIVISION
HEMB Y BRIDGE, NORTH CAROLINA
SLOPE DRAIN CALCULATIONS
47

CHARLO 1TE-M ECKLENBURG STO RVI WATER DESIG NM ANUAL
RISER BASIN #1
7180 10,000 SLOPE DRAIN
- 168 8,000 EXAMPLE (1) (2) (3)
- 156 6,000 0.42 Inches (3.5 foot) - 6,
- 6.
- 0.120 cfs
144 5,000
4,000 Nw - 6. - - 5.
- 132 toot - 4.
3,000 (I) 2.5 LI - 5' _ - 4.
- 120 - -
(2) 2.1 7.4 - -
2,000 (3) 2.2 7.7 4, - -
- 108 - - 3. -
'D In foot - - -3.
-
- 96 1,000 - 3. - -
-
800 - -
- 84 600 / 2-�L-'2
500
- 72 400 // e _ 2 - -
u - 300 E.yj/ .- - 1.5 - 1.5
z u) ,_
Z - 60 v 200 H L- L5 r
z / W ,_ -
c - 54 / a
a --"-
_ -
W 100 X--
J - 48 / r 80 = I
a
pu. ul o 50 HW SCALE ENT ANCE _ 1 0 -
40 p TYPE cr w
La 1... - 36 30 (1) Svuora edge with 42 - .9 ^ .9 ^ '9
w
-
a - 33 headwall a _
Q 20 (2 Groove end wire W -
- 30 -headwall S .8 ,- .8
(3) Groove end - •8
- 27 projecting -
s
-.7 - ,7-
- 24 8
6 To use scale(2)or(3)project -
21 5 horizontolly to scale (I),then -
a- use straight Inclined line through
0 and 0 scoles,or reverse os - .6
3 illustrated. - .6 - .6
- 18
2 - -
-
BUREAU OF PUBLIC ROADS JAN.19E3
- 15
- .5 - .5
1.0 HEADWATER SCALES 2 a3 " •5
REVISED MAY t964
- 12
Figure 5C-5 Headwater Depth for Concrete Pipe Culverts with Inlet Control
Source:www.deldot.gov/inform lion/pubs_form s'm aivals/road_design/pdf/supp_figures_chap6.pdf
RISER BASIN #1
SLOPE DRAIN #1=2.45 AC. X 0.45 X 7.26 = 8 CFS
5-32
48

CHARLO 1TE-M ECKLENBURG STO RVI WATER DESIG NM ANUAL
RISER BASIN #3
-180 - 10,000 SLOPE DRAINS
- 168 - 8,000 EXAMPLE (I) (2) (3)
- 156 - 6,000 0.42 Inch.. (3.5 foot) - 6,
- 6.
- 5,000 0.120 efe - 6.
- 144 - - 6, - - 5.
- 132 - 4,000- ± ;R tilt NW
- -
- 4.
- 3,000 (I) 2.5 e.11 - 5. _ - 4.
- 120 - -
- (2) 2.I 7.4 -
-
- 2,000 (3) 2.2 7.7 4, - -
- 108 - - - 3. -
- '0 In feet - - -3.
- 96 - 1,000 - 3. - _
- B00 - _
- 84 - 600 _ -�- 2. -2
` - 500 - -
- 72 - 400 / e r 2' - -
_ - �yj/ - - - 1.6
w - 300 1 - 1.5
o N = / m- - ..
Z - 60 v - 200 •- 1.5 -
Z - / W _ -
c - 5a ar/ as - - -
I- a
j - 48 / - 80 loo
- #1
J Q - _
v // v ^ 60 0 1.0 1._ 1.0 #2
42 W
p (n - 50 HW ENTRANCE -
x - 40 p E TYPE cr
w - I.0
1... - 36 - (1) Sguare.••s with ; - .9 - .9 .9
W
-
- 33 - h. .wallO
Q - 20 (2) ,'oar.end with W -
- 30 headwall - .8 - .8 #3
13) n' - .8
- 27 - projecting -
-.7 .T
- [ - 8 .7
- To use scale(2)or(3)project - -
- 21 - 5 horizontolly to scale (I),then -
- 4 use straight inclined line through
0 and 0 scales,or r.verse os - .6
- 3 illustrated. ,- .6 - .6
- 18 -
Z -
-- 2 BUREAU OF PUBLIC ROA0S JAN.19a3 - - -
- 15
-- .5 - .5
- 1.0 HEADWATER SCALES 2 d3 - •5
REVISED MAY t964
- 12
Figure 5C-5 Headwater Depth for Concrete Pipe Culverts with Inlet Control
Source:www.deldot.gov/inform lion/pubs_form s'm aivals/road_design/pdf/supp_figures_chap6.pdf
RISER BASIN #3
SLOPE DRAINS AREA INTENSITY RUNOFF COEFF. FLOW
1 8.55 AC. 7.26 0.45 27.93 CFS
2 1.46 AC. 7.26 0.45 4.77 CFS
3 2.87 AC. 7.26 0.45 9.38 CFS
5-32
49

MCBRIDE SUBDIVISION
HEMB Y BRIDGE, NORTH CAROLINA
WET POND BMP
CALCULATIONS
50

DETENTION WORKSHEET
for
HEMBY BRIDGE SUBDIVISION
WET POND BMP #1
SAND FILTER BMP #2
Plans Prepared By:
ISAACS
CIVIL ENGINEERING DESIGN AND LAND SURVEYING-0
8720 RED OAK BOULEVARD, SUITE 420
CHARLOTTE, N.C. 28217
PHONE [phone] FAX [phone]
P:Wctive Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\BMP\20155-Detention
Worksheet.xls
51

I.Post Construction Controls/Detention Summar3
PROJECT DESCRIPTION: (See Attached Narrative)
PRE-DEVELOPED SUMMARY:
Pre-Developed Data: Area#1 Pre-Developed Data: Area#2
Basin Area: 81.63 ac Basin Area: 2.57 ac
Time of Concentration,Tc pre: 40.9 min Time of Concentration,Tc pre: 5.0 min
(based on the SCS method) (based on the SCS method)
Curve Number,CNpre: 64.3 Curve Number,CNpre: 64.3
POST-DEVELOPED SUMMARY:
Post-Developed Data: Area#1 to BMP#1 Post-Developed Data: Area#4(Bypass)
Basin Area: 39.65 ac Basin Area: 1.67 ac
Time of Concentration,Tc post-on: 5.0 min Time of Concentration,Tc post-on: 5.0 min
(based on the SCS method) (based on the SCS method)
Curve Number,CN post-on: 77.4 Curve Number,CN post-on: 64.3
Post-Developed Data: Area#2 to BMP#2
Basin Area: 5.48 ac
Time of Concentration,Tc post-on: 5.0 min
(based on the SCS method)
Curve Number,CN post-on: 75.2
Post-Developed Data: Area#3(Bypass)
Basin Area: .00 ac
Time of Concentration,Tc post-on: 5.0 min
(based on the SCS method)
Curve Number,CN post-on: 64.3
DETENTION SUMMARY: SCS Unit Hydrograph Method using PondPack v7.5
A.BMP#1 Summary(Wet Pond;
Post Un- Post Routed Max.WSE
Routed(cfs) (cfs) (ft)
1-inch WQv - - 637.27
1-yr,24-hi 62.96 1.83 637.78
10-yr,6-hi 172.87 60.37 638.79
25-yr,6-hi 225.36 106.21 639.41
100-yr,6-hi 311.65 171.60 640.39
B.BMP#2 Summary(Surface Sand Filter;
Post Un- Post Routed Max.WSE
Routed(cfs) (cfs) (ft)
1-inch WQv - - 637.37
1-yr,24-hi 7.55 0.54 637.74
10-yr,6-hi 22.21 4.75 639.15
25-yr,6-hi 29.35 6.33 639.83
100-yr,6-hi 41.17 23.64 640.47
Combined flows at Point of Analysis#1
Pre(cfs) Post Bypass Post Routed
(cfs) (cfs)
1-yr,24-hr 16.95 13.10 13.60
10-yr,6-hr 88.90 66.49 131.53
25-yr,6-hr 128.97 95.59 207.19
100-yr,6-hr 199.47 146.24 338.50
C.Pre-Developed Area 2 and Post-Developed Area
Pre(cfs) Post(cfs)
1-yr,24-hi 1.46 0.95
10-yr,6-hi 6.59 4.28
25-yr,6-hi 9.48 6.16
100-yr,6-hi 14.51 9.43
P:\Active Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\BMP\20155-Detention Worksheet.xls
52

Curve Number Calculations(Continued)
A.Pre Developed Area#1
Total Area: 81.63 ac
Hydrologic Weighted CN
Acreage Land Use Soil Type Group CN (Acreage/Total Area)X(CN)
22.59 Woods,Good condition TbB2 B 55 15
14.40 Woods,Good condition ScA C 70 12
3.83 Woods,Good condition ChA C 70 3
22.58 Open space,Good Condition TbB2 B 61 17
14.40 Open space,Good Condition ScA C 74 13
3.83 Open space,Good Condition ChA C 74 3
81.63 CN= 64.3
B.Post Developed Area#1 (TO BMP#1)
Total Area: 39.65 ac
Hydrologic Weighted CN 1
Acreage Land Use Soil Type Group CN (Acreage/Total
14.78 Paved parking lots&roofs TbB2 B 98 37
16.96 Open space,Good Condition TbB2 B 61 26
7.91 Open space,Good Condition ScA C 74 15
39.65 CN= 77.4
C.Post Developed Area#2(TO BMP#2)
Total Area: 5.48 ac
Hydrologic Weighted CN
Acreage Land Use Soil Type Group CN (Acreage/Total Area)X(CN)
2.11 Paved parking lots&roofs TbB2 B 98 38
3.37 Open space,Good Condition TbB2 B 61 38
5.48 CN= 75.2
D.Post Developed CN-Area#3 (BYPASS)
Total Area: 37.42 ac
Hydrologic Weighted CN
Acreage Land Use Soil Type Group CN (Acreage/Total Area)X(CN)
10.34 Open space,Good Condition TbB2 B 61 16.86
4.58 Open space,Good Condition ScA C 74 9.06
3.79 Open space,Good Condition ChA C 74 7.49
10.34 Woods,Good condition TbB2 B 55 15.20
4.58 Woods,Good condition ScA C 70 8.57
3.79 Woods,Good condition ChA C 70 7.09
37.42 CN pre= 64.3
P:\Active Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\BMP\20155-Detention Worksheet.xls
53

Curve Number Calculations (Continued)
E. Pre Developed Area#2
Total Area: 2.57 ac
Hydrologic Weighted CN (Acreage/
Acreage Land Use Soil Type Group CN Total Area)X(CN)
.70 Woods, Good condition TbB2 B 55 15
.44 Woods, Good condition ScA C 70 12
.14 Woods, Good condition ChA C 70 4
.71 Open space, Good Condition TbB2 B 61 17
.44 Open space, Good Condition ScA C 74 13
.14 Open space, Good Condition ChA C 74 4
2.57 1 CN = 64.3
F. Post Developed CN-Area#4 (BYPASS)
Total Area: 1.67 ac
IHydrologic Weighted CN (Acreage/
Acreage Land Use Soil Type Group CN Total Area)X(CN)
0.46 Open space, Good Condition TbB2 B 61 16.80
0.29 Open space, Good Condition ScA C 74 12.85
0.08 Open space, Good Condition ChA C 74 3.54
0.46 Woods, Good condition TbB2 B 55 15.15
0.29 Woods, Good condition ScA C 70 12.16
0.09 Woods, Good condition ChA C 70 3.77
1.67 CN pre = 64.3
P:\Active Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\BMP\20155-Detention
Worksheet.xls
54

2. Time of Concentration(Tc)
A. Pre Tc - Pre-Developed Area#1
Type of Flow Travel Slope (%) Manning's n Time (min)
Length(ft)
Sheet Unpaved 200.0 2.300% 0.240 23.79
Shallow Conc. Unpaved 1013.0 3.00% - 6.04
Channel1 1150.0 .40% 0.040 11.02
Total n/a n/a n/a Tc Pre=40.85 min.
B. Post Tc - Post-Developed Area#1, Area#2, and Area#3 (Bypass)
Type of Flow Travel Slope (%) Manning's n Time (min)
Length(ft)
Total n/a n/a n/a Tc Post= 5.00 min.
C. Post Tc - Post-Developed Area#3 (Bypass)
Type of Flow Travel I Slope (%) Manning's ni Time (min)
Length (ft)
Sheet Unpaved 100.0 4.00% 0.240 11.0
Shallow Conc. Unpaved 137.0 4.00% - 0.7
Channel 1 1243.0 .65% 0.030 7.3
Total n/a n/a n/a Tc Post= 18.95 min.
D. Pre Tc - Pre-Developed Area#2
Type of Flow Travel Slope (%) Manning's n Time (min)
Length (ft)
Total n/a n/a n/a Tc Post= 5.00 min.
P:\Active Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\BMP\20155-Detention
Worksheet.xls
55

3. Storage
A. Storage Summary-BMP#1 (Wet Pond)
Underground Above Ground Total Acc.
Total Ace.
Elevation Volume
Acc.Volume for Volume(cf)
all Structures(cf)* Area(sq.ft.) Inc.Volume(CO Acc.Volume(cf) (ac-ft)
636.50 68803 0 0 0 0.00000
637.00 73185 35497 35497 35497 0.81490
638.00 77622 75404 110901 110901 2.54593
639.00 82116 79869 190770 190770 4.37947
639.50 84384 41625 232395 232395 5.33504
640.00 86667 42763 275157 275157 6.31674
641.00 91274 88971 364128 364128 8.35922
B. Storage Summary-BMP#2(Surface Sand Filter)
Underground Above Ground Total Acc. Total Acc.
Elevation Volume
Acc.Volume for Volume(cf)
all Structures(cf)* Area(sq.ft.) Inc.Volume(cf) Acc.Volume(cf) (ac-ft)
636.00 480.0 0 0 0 0.00000
636.50 2474.0 738.5 738.5 738.5 0.01695
637.00 6778.0 2313.0 3051.5 3051.5 0.07005
638.00 8746.0 7762.0 10813.5 10813.5 0.24824
638.50 9483.0 4557.3 15370.8 15370.8 0.35286
639.00 10455.0 4984.5 20355.3 20355.3 0.46729
640.00 11780.0 11117.5 31472.8 31472.8 0.72251
640.50 12464.0 6061.0 37533.8 37533.8 0.86166
641.00 13161.0 6406.3 43940.0 43940.0 1.00872
642.00 14599.0 13880.0 57820.0 57820.0 1.32736
P:\Active Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\BMP\20155-Detention Worksheet.xls
56

4.Discharge
*Refer to storm drainage design calculations for inlet and outlet control.
A.BMP#1 (Wet Pond) Contracted Contracted Suppressed
Sand Orifice 1 Orifice (Orifice Weir 1 Weir 2 Culvert Spillway
4.0 in. 1.50 ft 22.50 ft 2x 24 in. * 30.0 ft
Elevation Total Q
636.50 Inv 637.37 Inv 638.00 Inv 639.50 Inv
Co=.6 Cw=3.3 Cw=3.3 Cw=3.1
636.50
637.00 .24 .24
638.00 .48 2.29 2.77
639.00 .64 8.14 74.26 83.04
639.50 .71 11.12 135.81 147.63 .
640.00 .77 13.83 208.15 32.88 255.63
640.50 .82 16.12 289.59 93.00 399.52
641.00 .87 17.83 378.94 170.85 568.49
Co=orifice coefficient;Cw=weir coefficient
B.BMP#2(Surface Sand Filter) Contracted Contracted Suppressed
Sand Orifice 1 Orifice Orifice Weir 1 Weir Culvert Spillway(W2)
Elevation `f=1.5' 1.00 ft 15.0 ft 36 in.* 20.0 ft Total Q
k=2.0 in/hr 637.50 Inv 640.00 Inv 640.50 Inv
Af=456ft2 Cw=3.3 Cw=3.3 Cw=3.1
636.00
636.50 .028 .03
637.00 .035 .04
638.00 .049 1.06 1.11
638.50 .056 2.66 2.72
639.00 .063 4.28 4.35
640.00 .077 6.58 6.66
640.50 .084 6.92 17.54 24.55
641.00 .091 6.54 49.28 21.92 77.84
642.00 .106 3.18 137.51 113.90 254.70
Co=orifice coefficient;Cw=weir coefficient
P:Wctive Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\BMP\20155-Detention Worksheet.xls
57

WET POND CALCULATIONS
BMP Drainage Information:
Proposed BMP No.: 1 (Wet Pond)
Total Drainage Area,AD(Ac.)= 39.65 See Drainage Area Exhibit
Impervious Area(BUA)(Ac.)= 14.78
Percent Impervious Area,IA= 37.3
SCS Curve Number,CN= 77.4 (Hydrologic Group B&C Soil)
Time of Concentration,t,= 5 minutes(minimum)
BUA PER LOT ASSUMED:93 LOTS @ 4,500 SF PER LOT=9.61 AC.
BUA FOR PROPOSED ROADWAYS,AMENITIES&OVERFLOW PARKING:5.17 AC.
Pond Stage-Storage Information:
Perm.Water surface elevation= 636.5
Cummulative Forebay
Main Pool Surface Wet Volume Forebay Percentage of total
Elevation Area Excluding Cummulative Det'n Excluding Surface Area Cumulative Volume(15-20%
Forebays(s.f.) Volume(cu.ft.) Forebays (s.f.) Voluft)me(cu. desired)
(cu.ft.)
630 0 0 0 0 0
631 26655 0 13,328 10721 5,361
632 29319 0 41,315 12658 17,050
633 32051 0 72,000 14744 30,751
634 34852 0 105,451 16979 46,613
635 37722 0 141,738 19363 64,784
636 40660 0 180,929 21895 85,413
636.5 68803 0 208,295 24183 96,932 46.54
636.5 68803 0 208,295 0 0
637 73185 35,497 243,792 0 0
638 77622 110,901 319,195 0 0
639 82116 190,770 399,064 0 0
639.83 85889 260,492 468,786 0 0
640 86667 275,159 483,456 0 0
641.33 92823 394,520 602,820 0 0
Permanent Pool Calculations:
Permanent Pool Elevation= 638.5 See Plan
Permanent Pool Average Depth= 4.37 Per NCDEQ average depth equation 3
SA/DA ratio for 85%Pollutant Removal Efficiency= 1.08 Interpolated From C-3 Wetpond Table 1 in NCDEQ BMP Manual
Required Main Pool Surface Area of Wet Pond(s.f.)= 18,586 =((SA/DA)/100)(Ac.)(43560)
Main Pool Surface Area Provided(s.f.): 68,803 at elevation 636.50 OK
Temporary Water Quality Storage Calculations:
Runoff Coefficient,R„= 0.385 =0.05+0.009(IA)
Water Quality Volume,WQ„(acre-feet)= 1.27 =1.0RVAD/12
Temporary Water Quality Stroage Required,WQ„(ft3)= 55,483 =(43,560)(1.0)RVAD/12 (1.27 ac.ft.)
Temporary Water Quality Storage Provided @ elev.: 637.27 (Interpolated from Storage Table)
Temporary Water Quality Release Orifice Calculations:
Orifice Sized for 2-Day Release Rate(cfs)= 4.33 "Dia Orfice @ Elev
Orifice Sized for 5-Day Release Rate(cfs)= 2.74 "Dia Orfice @ Elev
P:Wctive Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\BMP\20155-Wet Pond Design Worksheet.xlsx
58

CONCRETE ANCHOR BUOYANCY CALCULATION OS-1
Height of riser= 11.1 ft from spillway of structure to pipe invert
Cross Sectional Area of Riser= 70.0 sf 6'x9' I.D. box w/6"wall thickness
Cross Sectional Area of Concrete = 16.0 sf
Vol. of riser= 777 cf
Wt. of H2O displaced = 48485 lbs
Conc. pad thickness = 30 in
Conc. pad width/length = 13 ft
Vol. of conc. pad = 423 cf
Wt. of H2O displaced = 26364 lbs
Total Wt. of H2O displaced = 74849 lbs
Unit wt. of concrete (pcf) = 150
Wt. of conc. pad (lb.) = 63375
Wt. of conc. box (lb.) = 26640
Total Wt. of Structure (lb.) = 90015
Factor of safety = wt. of Conc. Pad + Conc. Box
wt. of H2O displaced
F.S.= 1.20
59

SAND FILTER CALCULATIONS
BMP Drainage Information:
Proposed BMP No.: 2(Sand Filter)
Total Drainage Area,AD(Ac.)= 5.48 See Drainage Area Exhibit
Impervious Area(BUA)(Ac.)= 2.11 Total Proposed Impervious Area
Percent Impervious Area,IA= 38.5
SCS Curve Number,CN= 75.2 (Hydrologic Group B&C Soils)
Time of Concentration,to= 5 minutes(minimum)
Stage-Storage Information:
Top of Filter Media= 636.00
Forebay Forebay Sand Area Sand Area Sand Area Total Total Total
Forebay Surface Total Surface Cumulative
Elevation Incremental Cumulative Surface Area Incremental Cumulative Incremental Cumulative
Area(ft2) Volume(ft3) Volume(ft3) (ft) Volume(ft3) Volume(ft3) Area(ft2) Volume(ft3) Volume(ft3) Volume(ac-
ft)
636.00 0 0 0 480 0 0 480 0 0 0.0000
636.50 5 1 1 2,469 737 737 2,474 739 739 0.0170
637.00 1,215 305 306 5,563 2,008 2,745 6,778 2,313 3,052 0.0701
638.00 2,318 1,767 2,073 6,428 5,996 8,741 8,746 7,762 10,814 0.2482
638.50 2,604 1,231 3,303 6,879 3,327 12,068 9,483 4,557 15,371 0.3529
639.00 651 3,954 10,455 4,334 16,401 10,455 4,985 20,355 0.4673
640.00 0 3,954 11,780 11,118 27,519 11,780 11,118 31,473 0.7225
640.50 0 3,954 12,464 6,061 33,580 12,464 6,061 37,534 0.8617
641.00 0 3,954 13,161 6,406 39,986 13,161 6,406 43,940 1.0087
642.00 0 3,954 14,599 13,880 53,866 14,599 13,880 57,820 1.3274
Compute Water Quality Volume(WQ„)-Schueler Method:
Runoff Coefficient,Rv= 0.397 =0.05+0.009(IA)
Water Quality Volume,WQv(acre-feet)= 0.18 =1.0R„Ao/12
Water Quality Volume,WQ v(ft3)= 7,888 =(43,560)(1.0)R AD/12
Adjusted WQv Treatment Volume(75%)= 5,916
Water Quality Storage Elevation= 637.37 (From Stage-Storage)
Filter Bed Surface Area:
Depth of sand filter bed,df(ft)= 1.5 =minimum depth of 1.5 ft(Per NCDEQ Manual)
Coefficient of permeability for sand filter bed,k(ft/day)= 4 =2.0 inch/hour
Time required to drain WQv through filter bed,tf(day)= 2.125 =51 hours
Average head,hf(ft)= 0.79 =0.5*WQv Storage Depth
Required Surface Area for Filter Bed,Af(ft2)= 456 =(WQV)(df)/(k)(tf)(hf+df) Darcy's Equation
Provided Surface Area for Filter Bed,Af(ft2)= 456
Stage-Discharge for Sand Filter Media:
At=(WQV)(df)/I(k)(ttf)(hf+df)] 1 Darcy's Equation
(WQv)/(tf)=Q0=(A)(k)(hf+df)/(df)
Af=provided surface area of filter bed(ft2)
df=filter bed depth(ft)
k=coefficient of permeability of filter media(ft/day)
hf=average height of water above filter bed(ft)
Elevation hf(ft) Q.(cf/day) Qo(cfs) 10*Q0(cfs)
636.00 0.00 0 0.000 0.000
636.50 0.50 2,432 0.028 0.281
637.00 1.00 3,040 0.035 0.352
638.00 2.00 4,256 0.049 0.493
638.50 2.50 4,864 0.056 0.563
639.00 3.00 5,472 0.063 0.633
640.00 4.00 6,688 0.077 0.774
640.50 4.50 7,296 0.084 0.844
641.00 5.00 7,904 0.091 0.915
642.00 6.00 9,120 0.106 1.056
P:Wctive Projects\DRB Group\Hemby Bridge Development 20155\E ngmeering\Calculations\BMP\20155-Sand Filter Design Worksheet.xls

Compute Perforation Capacity
Number of pipes: 4
Length of pipe: 12
Number of perforations: 640 holes
50 Percent of perforations: 320
Capacity of one hole: 0.0083 cfs CA(2gh)^0.5
Total Capacity: 2.64 cfs
Compute Underdrain Capcity
Pipe diameter: 8 inches
Pipe slope: 0.005 ft/ft
Capacity of pipe: 0.93 cfs
Assume fifty percent clogging: 0.46 cfs
P:Wctive Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\BMP\20155-Sand Filter Design Worksheet.xls

CONCRETE ANCHOR BUOYANCY CALCULATION OS-2
Height of riser= 9.5 ft from spillway of structure to pipe invert
Cross Sectional Area of Riser= 25.0 sf 4'x4' I.D. box w/6"wall thickness
Cross Sectional Area of Concrete = 9.0 sf
Vol. of riser= 238 cf
Wt. of H2O displaced = 14820 lbs
Conc. pad thickness = 24 in
Conc. pad width/length = 9 ft
Vol. of conc. pad = 162 cf
Wt. of H2O displaced = 10109 lbs
Total Wt. of H2O displaced = 24929 lbs
Unit wt. of concrete (pcf) = 150
Wt. of conc. pad (lb.) = 24300
Wt. of conc. box (lb.) = 12825
Total Wt. of Structure (lb.) = 37125
Factor of safety = wt. of Conc. Pad + Conc. Box
wt. of H2O displaced
F.S.= 1.49
P:\Active Projects\DRB Group\Hemby Bridge Development 20155\Engineering\Calculations\BMP\20155-Sand
Filter Design Worksheet.xls
62

Pe 1 Q PRE OUT 1
PIS /2 Q PRE OUT 2
PG BMP 1 OS(Entrance)
e�A
06,
POST OUT 1
POST r r AEE A
oQ ti
OC
0
BMP 2 OS(Entrance)
p
POST I^ aYf ASS 0 POST OUT 2
20155-Pondpack Model.ppc
8/10/2023 The Isaacs Group
63

Subsection: Master Network Summary
Catchments Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ac-ft)
PRE DA-1 1-year 1 3.026 12.425 16.95
PRE DA-1 10-year 10 11.528 12.350 88.90
PRE DA-1 25-year 25 16.213 12.325 128.97
POST DA-1 1-year 1 3.431 11.925 62.96
POST DA-1 10-year 10 9.174 11.925 172.87
POST DA-1 25-year 25 12.005 11.925 225.36
POST DA-3 BYPASS 1-year 1 1.387 12.125 13.10
POST DA-3 BYPASS 10-year 10 5.284 12.100 66.49
POST DA-3 BYPASS 25-year 25 7.432 12.100 95.59
POST DA-2 1-year 1 0.420 11.925 7.55
POST DA-2 10-year 10 1.179 11.925 22.21
POST DA-2 25-year 25 1.559 11.925 29.35
PRE-DA-2 1-year 1 0.095 12.000 1.46
PRE-DA-2 10-year 10 0.363 11.925 6.59
PRE-DA-2 25-year 25 0.510 11.925 9.48
POST DA-4 BYPASS 1-year 1 0.062 12.000 0.95
POST DA-4 BYPASS 10-year 10 0.236 11.925 4.28
POST DA-4 BYPASS 25-year 25 0.332 11.925 6.16
Node Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ac-ft)
PRE OUT 1 1-year 1 ' 3.026 12.425 16.95
PRE OUT 1 10-year 10 11.528 12.350 88.90
PRE OUT 1 25-year 25 16.213 12.325 128.97
POST OUT 1 1-year 1 4.614 12.125 13.59
POST OUT 1 10-year 10 14.963 12.100 123.94
POST OUT 1 25-year 25 20.311 12.100 168.60
PRE OUT 2 1-year 1 0.095 12.000 1.46
PRE OUT 2 10-year 10 0.363 11.925 6.59
PRE OUT 2 25-year 25 0.510 11.925 9.48
POST OUT 2 1-year 1 0.062 12.000 0.95
POST OUT 2 10-year 10 0.236 11.925 4.28
POST OUT 2 25-year 25 0.332 11.925 6.16
Pond Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow Maximum Maximum
Event Volume (hours) (ft3/s) Water Pond Storage
(years) (ac-ft) Surface (ac-ft)
Elevation
(ft)
BMP 1 (IN) I 1-year 1 3.431 11.925 62.96 (N/A) (N/A)
BMP 1 (OUT) 1-year 1 2.827 15.875 1.83 637.78 2.169
BMP 1 (IN) 10-year 10 9.174 11.925 172.87 (N/A) (N/A)
BMP 1 (OUT) 10-year 10 8.522 12.100 52.72 638.79 3.992
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
64

Subsection: Master Network Summary
Pond Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow Maximum Maximum
Event Volume (hours) (ft3/s) Water Pond Storage
(years) (ac-ft) Surface (ac-ft)
Elevation
(ft)
BMP 1 (IN) 25-year 25 12.005 11.925 225.36 (N/A) (N/A)
BMP 1 (OUT) 25-year 25 11.343 12.100 66.69 639.41 5.167
BMP 2(IN) 1-year 1 0.420 11.925 7.55 (N/A) (N/A)
BMP 2(OUT) 1-year 1 0.400 13.075 0.54 637.74 0.201
BMP 2(IN) 10-year 10 1.179 11.925 22.21 (N/A) (N/A)
BMP 2(OUT) 10-year 10 1.157 12.125 4.75 639.15 0.505
BMP 2(IN) 25-year 25 1.559 11.925 29.35 (N/A) (N/A)
BMP 2(OUT) 25-year 25 1.536 12.125 6.33 639.83 0.678
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
65

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 1 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
0.000 0.000 0.000 0.000 0.000 0.000
0.125 0.000 0.000 0.000 0.000 0.000
0.250 0.000 0.000 0.000 0.000 0.000
0.375 0.000 0.000 0.000 0.000 0.000
0.500 0.000 0.000 0.000 0.000 0.000
0.625 0.000 0.000 0.000 0.000 0.000
0.750 0.000 0.000 0.000 0.000 0.000
0.875 0.000 0.000 0.000 0.000 0.000
1.000 0.000 0.000 0.000 0.000 0.000
1.125 0.000 0.000 0.000 0.000 0.000
1.250 0.000 0.000 0.000 0.000 0.000
1.375 0.000 0.000 0.000 0.000 0.000
1.500 0.000 0.000 0.000 0.000 0.000
1.625 0.000 0.000 0.000 0.000 0.000
1.750 0.000 0.000 0.000 0.000 0.000
1.875 0.000 0.000 0.000 0.000 0.000
2.000 0.000 0.000 0.000 0.000 0.000
2.125 0.000 0.000 0.000 0.000 0.000
2.250 0.000 0.000 0.000 0.000 0.000
2.375 0.000 0.000 0.000 0.000 0.000
2.500 0.000 0.000 0.000 0.000 0.000
2.625 0.000 0.000 0.000 0.000 0.000
2.750 0.000 0.000 0.000 0.000 0.000
2.875 0.000 0.000 0.000 0.000 0.000
3.000 0.000 0.000 0.000 0.000 0.000
3.125 0.000 0.000 0.000 0.000 0.000
3.250 0.000 0.000 0.000 0.000 0.000
3.375 0.000 0.000 0.000 0.000 0.000
3.500 0.000 0.000 0.000 0.000 0.000
3.625 0.000 0.000 0.000 0.000 0.000
3.750 0.000 0.000 0.000 0.000 0.000
3.875 0.000 0.000 0.000 0.000 0.000
4.000 0.000 0.000 0.000 0.000 0.000
4.125 0.000 0.000 0.000 0.000 0.000
4.250 0.000 0.000 0.000 0.000 0.000
4.375 0.000 0.000 0.000 0.000 0.000
4.500 0.000 0.000 0.000 0.000 0.000
4.625 0.000 0.000 0.000 0.000 0.000
4.750 0.000 0.000 0.000 0.000 0.000
4.875 0.000 0.000 0.000 0.000 0.000
5.000 0.000 0.000 0.000 0.000 0.000
5.125 0.000 0.000 0.000 0.000 0.000
5.250 0.000 0.000 0.000 0.000 0.000
5.375 0.000 0.000 0.000 0.000 0.000
5.500 0.000 0.000 0.000 0.000 0.000
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
66

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 1 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
5.625 0.000 0.000 0.000 0.000 0.000
5.750 0.000 0.000 0.000 0.000 0.000
5.875 0.000 0.000 0.000 0.000 0.000
6.000 0.000 0.000 0.000 0.000 0.000
6.125 0.000 0.000 0.000 0.000 0.000
6.250 0.000 0.000 0.000 0.000 0.000
6.375 0.000 0.000 0.000 0.000 0.000
6.500 0.000 0.000 0.000 0.000 0.000
6.625 0.000 0.000 0.000 0.000 0.000
6.750 0.000 0.000 0.000 0.000 0.000
6.875 0.000 0.000 0.000 0.000 0.000
7.000 0.000 0.000 0.000 0.000 0.000
7.125 0.000 0.000 0.000 0.000 0.000
7.250 0.000 0.000 0.000 0.000 0.000
7.375 0.000 0.000 0.000 0.000 0.000
7.500 0.000 0.000 0.000 0.000 0.000
7.625 0.000 0.000 0.000 0.000 0.000
7.750 0.000 0.000 0.000 0.000 0.000
7.875 0.000 0.000 0.000 0.000 0.000
8.000 0.000 0.000 0.000 0.000 0.000
8.125 0.000 0.000 0.000 0.000 0.000
8.250 0.000 0.000 0.000 0.000 0.000
8.375 0.000 0.000 0.000 0.000 0.000
8.500 0.000 0.000 0.000 0.000 0.000
8.625 0.000 0.000 0.000 0.000 0.000
8.750 0.000 0.000 0.000 0.000 0.000
8.875 0.000 0.000 0.000 0.000 0.000
9.000 0.000 0.000 0.000 0.000 0.000
9.125 0.000 0.000 0.000 0.000 0.000
9.250 0.000 0.000 0.000 0.000 0.000
9.375 0.000 0.000 0.000 0.000 0.000
9.500 0.000 0.000 0.000 0.000 0.000
9.625 0.000 0.000 0.000 0.000 0.000
9.750 0.000 0.000 0.000 0.000 0.000
9.875 0.000 0.000 0.000 0.000 0.000
10.000 0.000 0.000 0.000 0.000 0.000
10.125 0.000 0.000 0.000 0.000 0.000
10.250 0.000 0.000 0.000 0.000 0.000
10.375 0.000 0.000 0.000 0.000 0.000
10.500 0.000 0.000 0.000 0.000 0.000
10.625 0.001 0.001 0.001 0.001 0.002
10.750 0.002 0.002 0.003 0.003 0.004
10.875 0.005 0.005 0.006 0.007 0.008
11.000 0.009 0.010 0.011 0.012 0.013
11.125 0.015 0.016 0.018 0.019 0.021
20155-Pondpack Model.ppc
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67

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 1 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
11.250 0.023 0.025 0.027 0.030 0.032
11.375 0.035 0.038 0.041 0.044 0.047
11.500 0.051 0.055 0.060 0.066 0.074
11.625 0.084 0.096 0.113 0.133 0.158
11.750 0.188 0.227 0.273 0.327 0.397
11.875 0.489 0.600 0.725 0.853 0.977
12.000 1.095 1.208 1.304 1.373 1.420
12.125 1.455 1.483 1.508 1.531 1.553
12.250 1.573 1.593 1.612 1.631 1.648
12.375 1.665 1.681 1.697 1.711 1.725
12.500 1.738 1.750 1.762 1.773 1.783
12.625 1.793 1.803 1.813 1.822 1.831
12.750 1.840 1.849 1.858 1.866 1.874
12.875 1.882 1.889 1.897 1.904 1.911
13.000 1.918 1.925 1.931 1.937 1.944
13.125 1.950 1.955 1.961 1.967 1.972
13.250 1.978 1.983 1.988 1.993 1.998
13.375 2.003 2.007 2.012 2.016 2.021
13.500 2.025 2.029 2.033 2.037 2.040
13.625 2.044 2.048 2.051 2.055 2.058
13.750 2.061 2.064 2.067 2.070 2.073
13.875 2.076 2.079 2.081 2.084 2.086
14.000 2.089 2.091 2.093 2.095 2.098
14.125 2.100 2.102 2.104 2.106 2.108
14.250 2.110 2.111 2.113 2.115 2.117
14.375 2.119 2.120 2.122 2.124 2.125
14.500 2.127 2.128 2.130 2.131 2.133
14.625 2.134 2.136 2.137 2.138 2.140
14.750 2.141 2.142 2.144 2.145 2.146
14.875 2.147 2.148 2.149 2.150 2.151
15.000 2.152 2.153 2.154 2.155 2.156
15.125 2.157 2.157 2.158 2.159 2.160
15.250 2.160 2.161 2.162 2.162 2.163
15.375 2.163 2.164 2.164 2.165 2.165
15.500 2.166 2.166 2.167 2.167 2.167
15.625 2.167 2.168 2.168 2.168 2.168
15.750 2.168 2.169 2.169 2.169 2.169
15.875 2.169 2.169 2.169 2.169 2.169
16.000 2.169 2.168 2.168 2.168 2.168
16.125 2.168 2.167 2.167 2.167 2.167
16.250 2.167 2.166 2.166 2.166 2.166
16.375 2.165 2.165 2.165 2.164 2.164
16.500 2.164 2.163 2.163 2.163 2.162
16.625 2.162 2.162 2.161 2.161 2.161
16.750 2.160 2.160 2.160 2.159 2.159
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
68

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 1 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
16.875 2.158 2.158 2.158 2.157 2.157
17.000 2.156 2.156 2.155 2.155 2.154
17.125 2.154 2.153 2.153 2.152 2.152
17.250 2.151 2.151 2.150 2.150 2.149
17.375 2.149 2.148 2.148 2.147 2.147
17.500 2.146 2.145 2.145 2.144 2.144
17.625 2.143 2.142 2.142 2.141 2.141
17.750 2.140 2.139 2.139 2.138 2.137
17.875 2.137 2.136 2.135 2.135 2.134
18.000 2.133 2.133 2.132 2.131 2.130
18.125 2.130 2.129 2.128 2.128 2.127
18.250 2.126 2.125 2.125 2.124 2.123
18.375 2.122 2.122 2.121 2.120 2.119
18.500 2.118 2.118 2.117 2.116 2.115
18.625 2.114 2.113 2.113 2.112 2.111
18.750 2.110 2.109 2.108 2.108 2.107
18.875 2.106 2.105 2.104 2.103 2.102
19.000 2.101 2.100 2.100 2.099 2.098
19.125 2.097 2.096 2.095 2.094 2.093
19.250 2.092 2.091 2.090 2.089 2.088
19.375 2.087 2.086 2.085 2.084 2.083
19.500 2.082 2.081 2.080 2.079 2.078
19.625 2.077 2.076 2.075 2.074 2.073
19.750 2.072 2.071 2.070 2.069 2.068
19.875 2.067 2.066 2.065 2.064 2.063
20.000 2.062 2.061 2.059 2.058 2.057
20.125 2.056 2.055 2.054 2.053 2.052
20.250 2.051 2.050 2.049 2.048 2.047
20.375 2.046 2.045 2.043 2.042 2.041
20.500 2.040 2.039 2.038 2.037 2.036
20.625 2.035 2.034 2.033 2.032 2.031
20.750 2.030 2.029 2.028 2.027 2.026
20.875 2.025 2.024 2.023 2.022 2.022
21.000 2.021 2.020 2.019 2.018 2.017
21.125 2.016 2.015 2.014 2.013 2.012
21.250 2.011 2.010 2.009 2.008 2.007
21.375 2.007 2.006 2.005 2.004 2.003
21.500 2.002 2.001 2.000 1.999 1.998
21.625 1.998 1.997 1.996 1.995 1.994
21.750 1.993 1.992 1.991 1.991 1.990
21.875 1.989 1.988 1.987 1.986 1.985
22.000 1.985 1.984 1.983 1.982 1.981
22.125 1.980 1.980 1.979 1.978 1.977
22.250 1.976 1.975 1.975 1.974 1.973
22.375 1.972 1.971 1.971 1.970 1.969
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
69

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 1 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
22.500 1.968 1.967 1.967 1.966 1.965
22.625 1.964 1.963 1.963 1.962 1.961
22.750 1.960 1.960 1.959 1.958 1.957
22.875 1.957 1.956 1.955 1.954 1.954
23.000 1.953 1.952 1.951 1.951 1.950
2 3.12 5 1.949 1.948 1.948 1.947 1.946
23.250 1.945 1.945 1.944 1.943 1.942
23.375 1.942 1.941 1.940 1.940 1.939
23.500 1.938 1.937 1.937 1.936 1.935
23.625 1.935 1.934 1.933 1.933 1.932
23.750 1.931 1.930 1.930 1.929 1.928
23.875 1.928 1.927 1.926 1.926 1.925
24.000 1.924 1.924 1.923 1.921 1.919
24.125 1.917 1.914 1.912 1.909 1.907
24.250 1.905 1.902 1.900 1.897 1.895
24.375 1.893 1.890 1.888 1.886 1.883
24.500 1.881 1.879 1.876 1.874 1.872
24.625 1.870 1.867 1.865 1.863 1.861
24.750 1.859 1.856 1.854 1.852 1.850
24.875 1.848 1.846 1.844 1.842 1.840
25.000 1.837 1.835 1.833 1.831 1.829
25.125 1.827 1.825 1.823 1.821 1.819
25.250 1.817 1.815 1.813 1.811 1.809
25.375 1.808 1.806 1.804 1.802 1.800
25.500 1.798 1.796 1.794 1.793 1.791
25.625 1.789 1.787 1.785 1.783 1.782
25.750 1.780 1.778 1.776 1.775 1.773
25.875 1.771 1.769 1.768 1.766 1.764
26.000 1.763 1.761 1.759 1.758 1.756
26.125 1.754 1.753 1.751 1.749 1.748
26.250 1.746 1.745 1.743 1.741 1.740
26.375 1.738 1.737 1.735 1.734 1.732
26.500 1.731 1.729 1.728 1.726 1.725
26.625 1.723 1.722 1.720 1.719 1.717
26.750 1.716 1.714 1.713 1.712 1.710
26.875 1.709 1.707 1.706 1.705 1.703
27.000 1.702 1.700 1.699 1.698 1.696
27.125 1.695 1.694 1.692 1.691 1.690
27.250 1.688 1.687 1.686 1.685 1.683
27.375 1.682 1.681 1.679 1.678 1.677
27.500 1.676 1.674 1.673 1.672 1.671
27.625 1.670 1.668 1.667 1.666 1.665
27.750 1.663 1.662 1.661 1.660 1.659
27.875 1.657 1.656 1.655 1.654 1.653
28.000 1.651 1.650 1.649 1.648 1.647
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
70

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 1 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
28.125 1.645 1.644 1.643 1.642 1.641
28.250 1.640 1.638 1.637 1.636 1.635
28.375 1.634 1.633 1.631 1.630 1.629
28.500 1.628 1.627 1.626 1.625 1.624
28.625 1.622 1.621 1.620 1.619 1.618
28.750 1.617 1.616 1.615 1.613 1.612
28.875 1.611 1.610 1.609 1.608 1.607
29.000 1.606 1.605 1.604 1.603 1.602
29.125 1.600 1.599 1.598 1.597 1.596
29.250 1.595 1.594 1.593 1.592 1.591
29.375 1.590 1.589 1.588 1.587 1.586
29.500 1.585 1.584 1.583 1.582 1.581
29.625 1.580 1.578 1.577 1.576 1.575
29.750 1.574 1.573 1.572 1.571 1.570
29.875 1.569 1.568 1.567 1.566 1.565
30.000 1.564 1.563 1.562 1.562 1.561
30.125 1.560 1.559 1.558 1.557 1.556
30.250 1.555 1.554 1.553 1.552 1.551
30.375 1.550 1.549 1.548 1.547 1.546
30.500 1.545 1.544 1.543 1.542 1.541
30.625 1.541 1.540 1.539 1.538 1.537
30.750 1.536 1.535 1.534 1.533 1.532
30.875 1.531 1.530 1.530 1.529 1.528
31.000 1.527 1.526 1.525 1.524 1.523
31.125 1.522 1.521 1.521 1.520 1.519
31.250 1.518 1.517 1.516 1.515 1.514
31.375 1.514 1.513 1.512 1.511 1.510
31.500 1.509 1.508 1.508 1.507 1.506
31.625 1.505 1.504 1.503 1.503 1.502
31.750 1.501 1.500 1.499 1.498 1.498
31.875 1.497 1.496 1.495 1.494 1.493
32.000 1.493 1.492 1.491 1.490 1.489
32.125 1.489 1.488 1.487 1.486 1.485
32.250 1.485 1.484 1.483 1.482 1.481
32.375 1.481 1.480 1.479 1.478 1.477
32.500 1.477 1.476 1.475 1.474 1.474
32.625 1.473 1.472 1.471 1.471 1.470
32.750 1.469 1.468 1.467 1.467 1.466
32.875 1.465 1.464 1.464 1.463 1.462
33.000 1.461 1.461 1.460 1.459 1.459
33.125 1.458 1.457 1.456 1.456 1.455
33.250 1.454 1.453 1.453 1.452 1.451
33.375 1.451 1.450 1.449 1.448 1.448
33.500 1.447 1.446 1.445 1.445 1.444
33.625 1.443 1.443 1.442 1.441 1.440
20155-Pondpack Model.ppc
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71

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 1 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
33.750 1.440 1.439 1.438 1.437 1.437
33.875 1.436 1.435 1.435 1.434 1.433
34.000 1.432 1.432 1.431 1.430 1.430
34.125 1.429 1.428 1.427 1.427 1.426
34.250 1.425 1.425 1.424 1.423 1.422
34.375 1.422 1.421 1.420 1.420 1.419
34.500 1.418 1.417 1.417 1.416 1.415
34.625 1.415 1.414 1.413 1.412 1.412
34.750 1.411 1.410 1.410 1.409 1.408
34.875 1.407 1.407 1.406 1.405 1.405
35.000 1.404 1.403 1.402 1.402 1.401
35.125 1.400 1.400 1.399 1.398 1.397
35.250 1.397 1.396 1.395 1.395 1.394
35.375 1.393 1.393 1.392 1.391 1.390
35.500 1.390 1.389 1.388 1.388 1.387
35.625 1.386 1.385 1.385 1.384 1.383
35.750 1.383 1.382 1.381 1.381 1.380
35.875 1.379 1.378 1.378 1.377 1.376
36.000 1.376 1.375 1.374 1.374 1.373
36.125 1.372 1.372 1.371 1.370 1.369
36.250 1.369 1.368 1.367 1.367 1.366
36.375 1.365 1.365 1.364 1.363 1.362
36.500 1.362 1.361 1.360 1.360 1.359
36.625 1.358 1.358 1.357 1.356 1.356
36.750 1.355 1.354 1.353 1.353 1.352
36.875 1.351 1.351 1.350 1.349 1.349
37.000 1.348 1.347 1.347 1.346 1.345
37.125 1.344 1.344 1.343 1.342 1.342
37.250 1.341 1.340 1.340 1.339 1.338
37.375 1.338 1.337 1.336 1.336 1.335
37.500 1.334 1.334 1.333 1.332 1.331
37.625 1.331 1.330 1.329 1.329 1.328
37.750 1.327 1.327 1.326 1.325 1.325
37.875 1.324 1.323 1.323 1.322 1.321
38.000 1.321 1.320 1.319 1.319 1.318
38.125 1.317 1.317 1.316 1.315 1.314
38.250 1.314 1.313 1.312 1.312 1.311
38.375 1.310 1.310 1.309 1.308 1.308
38.500 1.307 1.306 1.306 1.305 1.304
38.625 1.304 1.303 1.302 1.302 1.301
38.750 1.300 1.300 1.299 1.298 1.298
38.875 1.297 1.296 1.296 1.295 1.294
39.000 1.294 1.293 1.292 1.292 1.291
39.125 1.290 1.290 1.289 1.288 1.288
39.250 1.287 1.286 1.286 1.285 1.284
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
72

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 1 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
39.375 1.284 1.283 1.282 1.282 1.281
39.500 1.280 1.280 1.279 1.278 1.278
39.625 1.277 1.276 1.276 1.275 1.274
39.750 1.274 1.273 1.272 1.272 1.271
39.875 1.270 1.270 1.269 1.268 1.268
40.000 1.267 1.266 1.266 1.265 1.264
40.125 1.264 1.263 1.262 1.262 1.261
40.250 1.260 1.260 1.259 1.258 1.258
40.375 1.257 1.256 1.256 1.255 1.255
40.500 1.254 1.253 1.253 1.252 1.251
40.625 1.251 1.250 1.249 1.249 1.248
40.750 1.247 1.247 1.246 1.245 1.245
40.875 1.244 1.243 1.243 1.242 1.241
41.000 1.241 1.240 1.240 1.239 1.238
41.125 1.238 1.237 1.236 1.236 1.235
41.250 1.234 1.234 1.233 1.232 1.232
41.375 1.231 1.230 1.230 1.229 1.229
41.500 1.228 1.227 1.227 1.226 1.225
41.625 1.225 1.224 1.223 1.223 1.222
41.750 1.221 1.221 1.220 1.219 1.219
41.875 1.218 1.218 1.217 1.216 1.216
42.000 1.215 1.214 1.214 1.213 1.212
42.125 1.212 1.211 1.211 1.210 1.209
42.250 1.209 1.208 1.207 1.207 1.206
42.375 1.205 1.205 1.204 1.203 1.203
42.500 1.202 1.202 1.201 1.200 1.200
42.625 1.199 1.198 1.198 1.197 1.197
42.750 1.196 1.195 1.195 1.194 1.193
42.875 1.193 1.192 1.191 1.191 1.190
43.000 1.190 1.189 1.188 1.188 1.187
43.125 1.186 1.186 1.185 1.185 1.184
43.250 1.183 1.183 1.182 1.181 1.181
43.375 1.180 1.179 1.179 1.178 1.178
43.500 1.177 1.176 1.176 1.175 1.174
43.625 1.174 1.173 1.173 1.172 1.171
43.750 1.171 1.170 1.169 1.169 1.168
43.875 1.168 1.167 1.166 1.166 1.165
44.000 1.164 1.164 1.163 1.163 1.162
44.125 1.161 1.161 1.160 1.159 1.159
44.250 1.158 1.158 1.157 1.156 1.156
44.375 1.155 1.155 1.154 1.153 1.153
44.500 1.152 1.151 1.151 1.150 1.150
44.625 1.149 1.148 1.148 1.147 1.146
44.750 1.146 1.145 1.145 1.144 1.143
44.875 1.143 1.142 1.142 1.141 1.140
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
73

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 1 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
45.000 1.140 1.139 1.138 1.138 1.137
45.125 1.137 1.136 1.135 1.135 1.134
45.250 1.134 1.133 1.132 1.132 1.131
45.375 1.131 1.130 1.129 1.129 1.128
45.500 1.128 1.127 1.126 1.126 1.125
45.625 1.124 1.124 1.123 1.123 1.122
45.750 1.121 1.121 1.120 1.120 1.119
45.875 1.118 1.118 1.117 1.117 1.116
46.000 1.115 1.115 1.114 1.114 1.113
46.125 1.112 1.112 1.111 1.111 1.110
46.250 1.109 1.109 1.108 1.108 1.107
46.375 1.106 1.106 1.105 1.104 1.104
46.500 1.103 1.103 1.102 1.101 1.101
46.625 1.100 1.100 1.099 1.098 1.098
46.750 1.097 1.097 1.096 1.096 1.095
46.875 1.094 1.094 1.093 1.093 1.092
47.000 1.091 1.091 1.090 1.090 1.089
47.125 1.088 1.088 1.087 1.087 1.086
47.250 1.085 1.085 1.084 1.084 1.083
47.375 1.082 1.082 1.081 1.081 1.080
47.500 1.079 1.079 1.078 1.078 1.077
47.625 1.076 1.076 1.075 1.075 1.074
47.750 1.074 1.073 1.072 1.072 1.071
47.875 1.071 1.070 1.069 1.069 1.068
48.000 1.068 1.067 1.066 1.066 1.065
48.125 1.065 1.064 1.064 1.063 1.062
48.250 1.062 1.061 1.061 1.060 1.059
48.375 1.059 1.058 1.058 1.057 1.057
48.500 1.056 1.055 1.055 1.054 1.054
48.625 1.053 1.052 1.052 1.051 1.051
48.750 1.050 1.050 1.049 1.048 1.048
48.875 1.047 1.047 1.046 1.045 1.045
49.000 1.044 1.044 1.043 1.043 1.042
49.125 1.041 1.041 1.040 1.040 1.039
49.250 1.039 1.038 1.037 1.037 1.036
49.375 1.036 1.035 1.034 1.034 1.033
49.500 1.033 1.032 1.032 1.031 1.030
49.625 1.030 1.029 1.029 1.028 1.028
49.750 1.027 1.026 1.026 1.025 1.025
49.875 1.024 1.024 1.023 1.022 1.022
50.000 1.021 1.021 1.020 1.020 1.019
50.125 1.018 1.018 1.017 1.017 1.016
50.250 1.016 1.015 1.014 1.014 1.013
50.375 1.013 1.012 1.012 1.011 1.010
50.500 1.010 1.009 1.009 1.008 1.008
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
74

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 1 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
50.625 1.007 1.007 1.006 1.005 1.005
50.750 1.004 1.004 1.003 1.003 1.002
50.875 1.001 1.001 1.000 1.000 0.999
51.000 0.999 0.998 0.997 0.997 0.996
51.125 0.996 0.995 0.995 0.994 0.994
51.250 0.993 0.992 0.992 0.991 0.991
51.375 0.990 0.990 0.989 0.989 0.988
51.500 0.987 0.987 0.986 0.986 0.985
51.625 0.985 0.984 0.983 0.983 0.982
51.750 0.982 0.981 0.981 0.980 0.980
51.875 0.979 0.978 0.978 0.977 0.977
52.000 0.976 0.976 0.975 0.975 0.974
52.125 0.974 0.973 0.972 0.972 0.971
52.250 0.971 0.970 0.970 0.969 0.969
52.375 0.968 0.967 0.967 0.966 0.966
52.500 0.965 0.965 0.964 0.964 0.963
52.625 0.962 0.962 0.961 0.961 0.960
52.750 0.960 0.959 0.959 0.958 0.958
52.875 0.957 0.956 0.956 0.955 0.955
53.000 0.954 0.954 0.953 0.953 0.952
53.125 0.952 0.951 0.950 0.950 0.949
53.250 0.949 0.948 0.948 0.947 0.947
53.375 0.946 0.946 0.945 0.944 0.944
53.500 0.943 0.943 0.942 0.942 0.941
53.625 0.941 0.940 0.940 0.939 0.938
53.750 0.938 0.937 0.937 0.936 0.936
53.875 0.935 0.935 0.934 0.934 0.933
54.000 0.933 0.932 0.931 0.931 0.930
54.125 0.930 0.929 0.929 0.928 0.928
54.250 0.927 0.927 0.926 0.926 0.925
54.375 0.924 0.924 0.923 0.923 0.922
54.500 0.922 0.921 0.921 0.920 0.920
54.625 0.919 0.919 0.918 0.918 0.917
54.750 0.916 0.916 0.915 0.915 0.914
54.875 0.914 0.913 0.913 0.912 0.912
55.000 0.911 0.911 0.910 0.910 0.909
55.125 0.908 0.908 0.907 0.907 0.906
55.250 0.906 0.905 0.905 0.904 0.904
55.375 0.903 0.903 0.902 0.902 0.901
55.500 0.901 0.900 0.899 0.899 0.898
55.625 0.898 0.897 0.897 0.896 0.896
55.750 0.895 0.895 0.894 0.894 0.893
55.875 0.893 0.892 0.892 0.891 0.891
56.000 0.890 0.890 0.889 0.888 0.888
56.125 0.887 0.887 0.886 0.886 0.885
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
75

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 1 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
56.250 0.885 0.884 0.884 0.883 0.883
56.375 0.882 0.882 0.881 0.881 0.880
56.500 0.880 0.879 0.879 0.878 0.878
56.625 0.877 0.876 0.876 0.875 0.875
56.750 0.874 0.874 0.873 0.873 0.872
56.875 0.872 0.871 0.871 0.870 0.870
57.000 0.869 0.869 0.868 0.868 0.867
57.125 0.867 0.866 0.866 0.865 0.865
57.250 0.864 0.864 0.863 0.863 0.862
57.375 0.862 0.861 0.860 0.860 0.859
57.500 0.859 0.858 0.858 0.857 0.857
57.625 0.856 0.856 0.855 0.855 0.854
57.750 0.854 0.853 0.853 0.852 0.852
57.875 0.851 0.851 0.850 0.850 0.849
58.000 0.849 0.848 0.848 0.847 0.847
58.125 0.846 0.846 0.845 0.845 0.844
58.250 0.844 0.843 0.843 0.842 0.842
58.375 0.841 0.841 0.840 0.840 0.839
58.500 0.839 0.838 0.838 0.837 0.837
58.625 0.836 0.836 0.835 0.835 0.834
58.750 0.834 0.833 0.833 0.832 0.832
58.875 0.831 0.831 0.830 0.830 0.829
59.000 0.829 0.828 0.828 0.827 0.827
59.125 0.826 0.826 0.825 0.825 0.824
59.250 0.824 0.823 0.823 0.822 0.822
59.375 0.821 0.821 0.820 0.820 0.819
59.500 0.819 0.818 0.818 0.817 0.817
59.625 0.816 0.816 0.815 0.815 0.814
59.750 0.814 0.813 0.813 0.812 0.812
59.875 0.811 0.811 0.810 0.810 0.809
60.000 0.809 0.808 0.808 0.807 0.807
60.125 0.806 0.806 0.805 0.805 0.804
60.250 0.804 0.803 0.803 0.802 0.802
60.375 0.801 0.801 0.800 0.800 0.799
60.500 0.799 0.798 0.798 0.797 0.797
60.625 0.796 0.796 0.795 0.795 0.794
60.750 0.794 0.794 0.793 0.793 0.792
60.875 0.792 0.791 0.791 0.790 0.790
61.000 0.789 0.789 0.788 0.788 0.787
61.125 0.787 0.786 0.786 0.785 0.785
61.250 0.784 0.784 0.783 0.783 0.782
61.375 0.782 0.782 0.781 0.781 0.780
61.500 0.780 0.779 0.779 0.778 0.778
61.625 0.777 0.777 0.776 0.776 0.775
61.750 0.775 0.774 0.774 0.773 0.773
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
76

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 1 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
61.875 0.773 0.772 0.772 0.771 0.771
62.000 0.770 0.770 0.769 0.769 0.768
62.125 0.768 0.767 0.767 0.766 0.766
62.250 0.765 0.765 0.765 0.764 0.764
62.375 0.763 0.763 0.762 0.762 0.761
62.500 0.761 0.760 0.760 0.759 0.759
62.625 0.759 0.758 0.758 0.757 0.757
62.750 0.756 0.756 0.755 0.755 0.754
62.875 0.754 0.753 0.753 0.753 0.752
63.000 0.752 0.751 0.751 0.750 0.750
63.125 0.749 0.749 0.748 0.748 0.748
63.250 0.747 0.747 0.746 0.746 0.745
63.375 0.745 0.744 0.744 0.743 0.743
63.500 0.743 0.742 0.742 0.741 0.741
63.625 0.740 0.740 0.739 0.739 0.738
63.750 0.738 0.738 0.737 0.737 0.736
63.875 0.736 0.735 0.735 0.734 0.734
64.000 0.734 0.733 0.733 0.732 0.732
64.125 0.731 0.731 0.730 0.730 0.730
64.250 0.729 0.729 0.728 0.728 0.727
64.375 0.727 0.726 0.726 0.726 0.725
64.500 0.725 0.724 0.724 0.723 0.723
64.625 0.722 0.722 0.722 0.721 0.721
64.750 0.720 0.720 0.719 0.719 0.719
64.875 0.718 0.718 0.717 0.717 0.716
65.000 0.716 0.715 0.715 0.715 0.714
65.125 0.714 0.713 0.713 0.712 0.712
65.250 0.712 0.711 0.711 0.710 0.710
65.375 0.709 0.709 0.708 0.708 0.708
65.500 0.707 0.707 0.706 0.706 0.705
65.625 0.705 0.705 0.704 0.704 0.703
65.750 0.703 0.702 0.702 0.702 0.701
65.875 0.701 0.700 0.700 0.699 0.699
66.000 0.699 0.698 0.698 0.697 0.697
66.125 0.697 0.696 0.696 0.695 0.695
66.250 0.694 0.694 0.694 0.693 0.693
66.375 0.692 0.692 0.691 0.691 0.691
66.500 0.690 0.690 0.689 0.689 0.688
66.625 0.688 0.688 0.687 0.687 0.686
66.750 0.686 0.686 0.685 0.685 0.684
66.875 0.684 0.683 0.683 0.683 0.682
67.000 0.682 0.681 0.681 0.681 0.680
67.125 0.680 0.679 0.679 0.679 0.678
67.250 0.678 0.677 0.677 0.676 0.676
67.375 0.676 0.675 0.675 0.674 0.674
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
77

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 1 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
67.500 0.674 0.673 0.673 0.672 0.672
67.625 0.672 0.671 0.671 0.670 0.670
67.750 0.669 0.669 0.669 0.668 0.668
67.875 0.667 0.667 0.667 0.666 0.666
68.000 0.665 0.665 0.665 0.664 0.664
68.125 0.663 0.663 0.663 0.662 0.662
68.250 0.661 0.661 0.661 0.660 0.660
68.375 0.659 0.659 0.659 0.658 0.658
68.500 0.657 0.657 0.657 0.656 0.656
68.625 0.655 0.655 0.655 0.654 0.654
68.750 0.653 0.653 0.653 0.652 0.652
68.875 0.651 0.651 0.651 0.650 0.650
69.000 0.649 0.649 0.649 0.648 0.648
69.125 0.647 0.647 0.647 0.646 0.646
69.250 0.645 0.645 0.645 0.644 0.644
69.375 0.643 0.643 0.643 0.642 0.642
69.500 0.642 0.641 0.641 0.640 0.640
69.625 0.640 0.639 0.639 0.638 0.638
69.750 0.638 0.637 0.637 0.636 0.636
69.875 0.636 0.635 0.635 0.635 0.634
70.000 0.634 0.633 0.633 0.633 0.632
70.125 0.632 0.631 0.631 0.631 0.630
70.250 0.630 0.630 0.629 0.629 0.628
70.375 0.628 0.628 0.627 0.627 0.626
70.500 0.626 0.626 0.625 0.625 0.625
70.625 0.624 0.624 0.623 0.623 0.623
70.750 0.622 0.622 0.622 0.621 0.621
70.875 0.620 0.620 0.620 0.619 0.619
71.000 0.619 0.618 0.618 0.617 0.617
71.125 0.617 0.616 0.616 0.615 0.615
71.250 0.615 0.614 0.614 0.614 0.613
71.375 0.613 0.613 0.612 0.612 0.611
71.500 0.611 0.611 0.610 0.610 0.610
71.625 0.609 0.609 0.608 0.608 0.608
71.750 0.607 0.607 0.607 0.606 0.606
71.875 0.605 0.605 0.605 0.604 0.604
72.000 0.604 (N/A) (N/A) (N/A) (N/A)
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
78

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 2 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
0.000 0.000 0.000 0.000 0.000 0.000
0.125 0.000 0.000 0.000 0.000 0.000
0.250 0.000 0.000 0.000 0.000 0.000
0.375 0.000 0.000 0.000 0.000 0.000
0.500 0.000 0.000 0.000 0.000 0.000
0.625 0.000 0.000 0.000 0.000 0.000
0.750 0.000 0.000 0.000 0.000 0.000
0.875 0.000 0.000 0.000 0.000 0.000
1.000 0.000 0.000 0.000 0.000 0.000
1.125 0.000 0.000 0.000 0.000 0.000
1.250 0.000 0.000 0.000 0.000 0.000
1.375 0.000 0.000 0.000 0.000 0.000
1.500 0.000 0.000 0.000 0.000 0.000
1.625 0.000 0.000 0.000 0.000 0.000
1.750 0.000 0.000 0.000 0.000 0.000
1.875 0.000 0.000 0.000 0.000 0.000
2.000 0.000 0.000 0.000 0.000 0.000
2.125 0.000 0.000 0.000 0.000 0.000
2.250 0.000 0.000 0.000 0.000 0.000
2.375 0.000 0.000 0.000 0.000 0.000
2.500 0.000 0.000 0.000 0.000 0.000
2.625 0.000 0.000 0.000 0.000 0.000
2.750 0.000 0.000 0.000 0.000 0.000
2.875 0.000 0.000 0.000 0.000 0.000
3.000 0.000 0.000 0.000 0.000 0.000
3.125 0.000 0.000 0.000 0.000 0.000
3.250 0.000 0.000 0.000 0.000 0.000
3.375 0.000 0.000 0.000 0.000 0.000
3.500 0.000 0.000 0.000 0.000 0.000
3.625 0.000 0.000 0.000 0.000 0.000
3.750 0.000 0.000 0.000 0.000 0.000
3.875 0.000 0.000 0.000 0.000 0.000
4.000 0.000 0.000 0.000 0.000 0.000
4.125 0.000 0.000 0.000 0.000 0.000
4.250 0.000 0.000 0.000 0.000 0.000
4.375 0.000 0.000 0.000 0.000 0.000
4.500 0.000 0.000 0.000 0.000 0.000
4.625 0.000 0.000 0.000 0.000 0.000
4.750 0.000 0.000 0.000 0.000 0.000
4.875 0.000 0.000 0.000 0.000 0.000
5.000 0.000 0.000 0.000 0.000 0.000
5.125 0.000 0.000 0.000 0.000 0.000
5.250 0.000 0.000 0.000 0.000 0.000
5.375 0.000 0.000 0.000 0.000 0.000
5.500 0.000 0.000 0.000 0.000 0.000
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
79

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 2 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
5.625 0.000 0.000 0.000 0.000 0.000
5.750 0.000 0.000 0.000 0.000 0.000
5.875 0.000 0.000 0.000 0.000 0.000
6.000 0.000 0.000 0.000 0.000 0.000
6.125 0.000 0.000 0.000 0.000 0.000
6.250 0.000 0.000 0.000 0.000 0.000
6.375 0.000 0.000 0.000 0.000 0.000
6.500 0.000 0.000 0.000 0.000 0.000
6.625 0.000 0.000 0.000 0.000 0.000
6.750 0.000 0.000 0.000 0.000 0.000
6.875 0.000 0.000 0.000 0.000 0.000
7.000 0.000 0.000 0.000 0.000 0.000
7.125 0.000 0.000 0.000 0.000 0.000
7.250 0.000 0.000 0.000 0.000 0.000
7.375 0.000 0.000 0.000 0.000 0.000
7.500 0.000 0.000 0.000 0.000 0.000
7.625 0.000 0.000 0.000 0.000 0.000
7.750 0.000 0.000 0.000 0.000 0.000
7.875 0.000 0.000 0.000 0.000 0.000
8.000 0.000 0.000 0.000 0.000 0.000
8.125 0.000 0.000 0.000 0.000 0.000
8.250 0.000 0.000 0.000 0.000 0.000
8.375 0.000 0.000 0.000 0.000 0.000
8.500 0.000 0.000 0.000 0.000 0.000
8.625 0.000 0.000 0.000 0.000 0.000
8.750 0.000 0.000 0.000 0.000 0.000
8.875 0.000 0.000 0.000 0.000 0.000
9.000 0.000 0.000 0.000 0.000 0.000
9.125 0.000 0.000 0.000 0.000 0.000
9.250 0.000 0.000 0.000 0.000 0.000
9.375 0.000 0.000 0.000 0.000 0.000
9.500 0.000 0.000 0.000 0.000 0.000
9.625 0.000 0.000 0.000 0.000 0.000
9.750 0.000 0.000 0.000 0.000 0.000
9.875 0.000 0.000 0.000 0.000 0.000
10.000 0.000 0.000 0.000 0.000 0.000
10.125 0.000 0.000 0.000 0.000 0.000
10.250 0.000 0.000 0.000 0.000 0.000
10.375 0.000 0.000 0.000 0.000 0.000
10.500 0.000 0.000 0.000 0.000 0.000
10.625 0.000 0.000 0.000 0.000 0.000
10.750 0.000 0.000 0.000 0.000 0.000
10.875 0.000 0.000 0.000 0.000 0.000
11.000 0.000 0.000 0.000 0.000 0.000
11.125 0.000 0.000 0.000 0.000 0.001
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
80

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 2 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
11.250 0.001 0.001 0.001 0.001 0.001
11.375 0.001 0.002 0.002 0.002 0.002
11.500 0.003 0.003 0.003 0.004 0.005
11.625 0.006 0.007 0.008 0.011 0.013
11.750 0.016 0.020 0.025 0.031 0.039
11.875 0.050 0.063 0.078 0.093 0.108
12.000 0.123 0.137 0.149 0.157 0.163
12.125 0.167 0.170 0.173 0.176 0.178
12.250 0.180 0.182 0.184 0.186 0.187
12.375 0.189 0.190 0.191 0.193 0.194
12.500 0.194 0.195 0.196 0.196 0.197
12.625 0.197 0.198 0.198 0.199 0.199
12.750 0.199 0.200 0.200 0.200 0.200
12.875 0.201 0.201 0.201 0.201 0.201
13.000 0.201 0.201 0.201 0.201 0.201
13.125 0.201 0.201 0.201 0.201 0.201
13.250 0.201 0.201 0.201 0.200 0.200
13.375 0.200 0.200 0.200 0.200 0.200
13.500 0.199 0.199 0.199 0.199 0.199
13.625 0.199 0.198 0.198 0.198 0.198
13.750 0.197 0.197 0.197 0.197 0.197
13.875 0.196 0.196 0.196 0.196 0.195
14.000 0.195 0.195 0.195 0.194 0.194
14.125 0.194 0.194 0.193 0.193 0.193
14.250 0.193 0.193 0.192 0.192 0.192
14.375 0.192 0.191 0.191 0.191 0.191
14.500 0.191 0.190 0.190 0.190 0.190
14.625 0.190 0.189 0.189 0.189 0.189
14.750 0.189 0.188 0.188 0.188 0.188
14.875 0.188 0.188 0.187 0.187 0.187
15.000 0.187 0.187 0.186 0.186 0.186
15.125 0.186 0.186 0.186 0.185 0.185
15.250 0.185 0.185 0.185 0.185 0.185
15.375 0.184 0.184 0.184 0.184 0.184
15.500 0.184 0.183 0.183 0.183 0.183
15.625 0.183 0.183 0.182 0.182 0.182
15.750 0.182 0.182 0.182 0.182 0.181
15.875 0.181 0.181 0.181 0.181 0.181
16.000 0.181 0.180 0.180 0.180 0.180
16.125 0.180 0.180 0.180 0.179 0.179
16.250 0.179 0.179 0.179 0.179 0.179
16.375 0.179 0.178 0.178 0.178 0.178
16.500 0.178 0.178 0.178 0.178 0.178
16.625 0.177 0.177 0.177 0.177 0.177
16.750 0.177 0.177 0.177 0.177 0.177
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
81

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 2 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
16.875 0.177 0.176 0.176 0.176 0.176
17.000 0.176 0.176 0.176 0.176 0.176
17.125 0.176 0.176 0.176 0.175 0.175
17.250 0.175 0.175 0.175 0.175 0.175
17.375 0.175 0.175 0.175 0.175 0.175
17.500 0.175 0.174 0.174 0.174 0.174
17.625 0.174 0.174 0.174 0.174 0.174
17.750 0.174 0.174 0.174 0.174 0.174
17.875 0.174 0.174 0.173 0.173 0.173
18.000 0.173 0.173 0.173 0.173 0.173
18.125 0.173 0.173 0.173 0.173 0.173
18.250 0.173 0.173 0.173 0.173 0.172
18.375 0.172 0.172 0.172 0.172 0.172
18.500 0.172 0.172 0.172 0.172 0.172
18.625 0.172 0.172 0.172 0.172 0.172
18.750 0.172 0.172 0.171 0.171 0.171
18.875 0.171 0.171 0.171 0.171 0.171
19.000 0.171 0.171 0.171 0.171 0.171
19.125 0.171 0.171 0.171 0.171 0.171
19.250 0.171 0.170 0.170 0.170 0.170
19.375 0.170 0.170 0.170 0.170 0.170
19.500 0.170 0.170 0.170 0.170 0.170
19.625 0.170 0.170 0.170 0.170 0.170
19.750 0.169 0.169 0.169 0.169 0.169
19.875 0.169 0.169 0.169 0.169 0.169
20.000 0.169 0.169 0.169 0.169 0.169
20.125 0.169 0.169 0.169 0.169 0.169
20.250 0.168 0.168 0.168 0.168 0.168
20.375 0.168 0.168 0.168 0.168 0.168
20.500 0.168 0.168 0.168 0.168 0.168
20.625 0.168 0.168 0.168 0.168 0.168
20.750 0.168 0.168 0.168 0.168 0.168
20.875 0.168 0.168 0.168 0.168 0.167
21.000 0.167 0.167 0.167 0.167 0.167
21.125 0.167 0.167 0.167 0.167 0.167
21.250 0.167 0.167 0.167 0.167 0.167
21.375 0.167 0.167 0.167 0.167 0.167
21.500 0.167 0.167 0.167 0.167 0.167
21.625 0.167 0.167 0.167 0.167 0.167
21.750 0.167 0.167 0.167 0.167 0.167
21.875 0.167 0.167 0.167 0.167 0.167
22.000 0.167 0.167 0.167 0.167 0.167
22.125 0.167 0.167 0.167 0.167 0.167
22.250 0.167 0.167 0.167 0.167 0.166
22.375 0.166 0.166 0.166 0.166 0.166
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
82

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 2 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
22.500 0.166 0.166 0.166 0.166 0.166
22.625 0.166 0.166 0.166 0.166 0.166
22.750 0.166 0.166 0.166 0.166 0.166
22.875 0.166 0.166 0.166 0.166 0.166
23.000 0.166 0.166 0.166 0.166 0.166
23.125 0.166 0.166 0.166 0.166 0.166
23.250 0.166 0.166 0.166 0.166 0.166
23.375 0.166 0.166 0.166 0.166 0.166
23.500 0.166 0.166 0.166 0.166 0.166
23.625 0.166 0.166 0.166 0.166 0.166
23.750 0.166 0.166 0.166 0.166 0.166
23.875 0.166 0.166 0.166 0.166 0.166
24.000 0.166 0.166 0.166 0.166 0.165
24.125 0.165 0.165 0.165 0.164 0.164
24.250 0.164 0.164 0.164 0.163 0.163
24.375 0.163 0.163 0.163 0.163 0.162
24.500 0.162 0.162 0.162 0.162 0.162
24.625 0.161 0.161 0.161 0.161 0.161
24.750 0.161 0.161 0.161 0.160 0.160
24.875 0.160 0.160 0.160 0.160 0.160
25.000 0.160 0.160 0.160 0.159 0.159
25.125 0.159 0.159 0.159 0.159 0.159
25.250 0.159 0.159 0.159 0.159 0.158
25.375 0.158 0.158 0.158 0.158 0.158
25.500 0.158 0.158 0.158 0.158 0.158
25.625 0.158 0.157 0.157 0.157 0.157
25.750 0.157 0.157 0.157 0.157 0.157
25.875 0.157 0.157 0.156 0.156 0.156
26.000 0.156 0.156 0.156 0.156 0.156
26.125 0.156 0.156 0.156 0.156 0.155
26.250 0.155 0.155 0.155 0.155 0.155
26.375 0.155 0.155 0.155 0.155 0.155
26.500 0.155 0.154 0.154 0.154 0.154
26.625 0.154 0.154 0.154 0.154 0.154
26.750 0.154 0.154 0.154 0.153 0.153
26.875 0.153 0.153 0.153 0.153 0.153
27.000 0.153 0.153 0.153 0.153 0.153
27.125 0.152 0.152 0.152 0.152 0.152
27.250 0.152 0.152 0.152 0.152 0.152
27.375 0.152 0.151 0.151 0.151 0.151
27.500 0.151 0.151 0.151 0.151 0.151
27.625 0.151 0.151 0.151 0.150 0.150
27.750 0.150 0.150 0.150 0.150 0.150
27.875 0.150 0.150 0.150 0.150 0.150
28.000 0.149 0.149 0.149 0.149 0.149
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
83

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 2 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
28.125 0.149 0.149 0.149 0.149 0.149
28.250 0.149 0.149 0.148 0.148 0.148
28.375 0.148 0.148 0.148 0.148 0.148
28.500 0.148 0.148 0.148 0.148 0.147
28.625 0.147 0.147 0.147 0.147 0.147
28.750 0.147 0.147 0.147 0.147 0.147
28.875 0.147 0.146 0.146 0.146 0.146
29.000 0.146 0.146 0.146 0.146 0.146
29.125 0.146 0.146 0.146 0.145 0.145
29.250 0.145 0.145 0.145 0.145 0.145
29.375 0.145 0.145 0.145 0.145 0.145
29.500 0.144 0.144 0.144 0.144 0.144
29.625 0.144 0.144 0.144 0.144 0.144
29.750 0.144 0.144 0.143 0.143 0.143
29.875 0.143 0.143 0.143 0.143 0.143
30.000 0.143 0.143 0.143 0.143 0.142
30.125 0.142 0.142 0.142 0.142 0.142
30.250 0.142 0.142 0.142 0.142 0.142
30.375 0.142 0.141 0.141 0.141 0.141
30.500 0.141 0.141 0.141 0.141 0.141
30.625 0.141 0.141 0.141 0.140 0.140
30.750 0.140 0.140 0.140 0.140 0.140
30.875 0.140 0.140 0.140 0.140 0.140
31.000 0.139 0.139 0.139 0.139 0.139
31.125 0.139 0.139 0.139 0.139 0.139
31.250 0.139 0.139 0.138 0.138 0.138
31.375 0.138 0.138 0.138 0.138 0.138
31.500 0.138 0.138 0.138 0.138 0.137
31.625 0.137 0.137 0.137 0.137 0.137
31.750 0.137 0.137 0.137 0.137 0.137
31.875 0.137 0.136 0.136 0.136 0.136
32.000 0.136 0.136 0.136 0.136 0.136
32.125 0.136 0.136 0.136 0.135 0.135
32.250 0.135 0.135 0.135 0.135 0.135
32.375 0.135 0.135 0.135 0.135 0.135
32.500 0.134 0.134 0.134 0.134 0.134
32.625 0.134 0.134 0.134 0.134 0.134
32.750 0.134 0.134 0.134 0.133 0.133
32.875 0.133 0.133 0.133 0.133 0.133
33.000 0.133 0.133 0.133 0.133 0.133
33.125 0.132 0.132 0.132 0.132 0.132
33.250 0.132 0.132 0.132 0.132 0.132
33.375 0.132 0.132 0.131 0.131 0.131
33.500 0.131 0.131 0.131 0.131 0.131
33.625 0.131 0.131 0.131 0.131 0.130
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
84

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 2 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
33.750 0.130 0.130 0.130 0.130 0.130
33.875 0.130 0.130 0.130 0.130 0.130
34.000 0.130 0.129 0.129 0.129 0.129
34.125 0.129 0.129 0.129 0.129 0.129
34.250 0.129 0.129 0.129 0.129 0.128
34.375 0.128 0.128 0.128 0.128 0.128
34.500 0.128 0.128 0.128 0.128 0.128
34.625 0.128 0.127 0.127 0.127 0.127
34.750 0.127 0.127 0.127 0.127 0.127
34.875 0.127 0.127 0.127 0.126 0.126
35.000 0.126 0.126 0.126 0.126 0.126
35.125 0.126 0.126 0.126 0.126 0.126
35.250 0.126 0.125 0.125 0.125 0.125
35.375 0.125 0.125 0.125 0.125 0.125
35.500 0.125 0.125 0.125 0.124 0.124
35.625 0.124 0.124 0.124 0.124 0.124
35.750 0.124 0.124 0.124 0.124 0.124
35.875 0.123 0.123 0.123 0.123 0.123
36.000 0.123 0.123 0.123 0.123 0.123
36.125 0.123 0.123 0.123 0.122 0.122
36.250 0.122 0.122 0.122 0.122 0.122
36.375 0.122 0.122 0.122 0.122 0.122
36.500 0.121 0.121 0.121 0.121 0.121
36.625 0.121 0.121 0.121 0.121 0.121
36.750 0.121 0.121 0.121 0.120 0.120
36.875 0.120 0.120 0.120 0.120 0.120
37.000 0.120 0.120 0.120 0.120 0.120
37.125 0.119 0.119 0.119 0.119 0.119
37.250 0.119 0.119 0.119 0.119 0.119
37.375 0.119 0.119 0.119 0.118 0.118
37.500 0.118 0.118 0.118 0.118 0.118
37.625 0.118 0.118 0.118 0.118 0.118
37.750 0.117 0.117 0.117 0.117 0.117
37.875 0.117 0.117 0.117 0.117 0.117
38.000 0.117 0.117 0.117 0.116 0.116
38.125 0.116 0.116 0.116 0.116 0.116
38.250 0.116 0.116 0.116 0.116 0.116
38.375 0.115 0.115 0.115 0.115 0.115
38.500 0.115 0.115 0.115 0.115 0.115
38.625 0.115 0.115 0.115 0.114 0.114
38.750 0.114 0.114 0.114 0.114 0.114
38.875 0.114 0.114 0.114 0.114 0.114
39.000 0.113 0.113 0.113 0.113 0.113
39.125 0.113 0.113 0.113 0.113 0.113
39.250 0.113 0.113 0.113 0.112 0.112
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
85

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 2 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
39.375 0.112 0.112 0.112 0.112 0.112
39.500 0.112 0.112 0.112 0.112 0.112
39.625 0.111 0.111 0.111 0.111 0.111
39.750 0.111 0.111 0.111 0.111 0.111
39.875 0.111 0.111 0.111 0.110 0.110
40.000 0.110 0.110 0.110 0.110 0.110
40.125 0.110 0.110 0.110 0.110 0.110
40.250 0.110 0.109 0.109 0.109 0.109
40.375 0.109 0.109 0.109 0.109 0.109
40.500 0.109 0.109 0.109 0.108 0.108
40.625 0.108 0.108 0.108 0.108 0.108
40.750 0.108 0.108 0.108 0.108 0.108
40.875 0.108 0.107 0.107 0.107 0.107
41.000 0.107 0.107 0.107 0.107 0.107
41.125 0.107 0.107 0.107 0.107 0.106
41.250 0.106 0.106 0.106 0.106 0.106
41.375 0.106 0.106 0.106 0.106 0.106
41.500 0.106 0.105 0.105 0.105 0.105
41.625 0.105 0.105 0.105 0.105 0.105
41.750 0.105 0.105 0.105 0.105 0.104
41.875 0.104 0.104 0.104 0.104 0.104
42.000 0.104 0.104 0.104 0.104 0.104
42.125 0.104 0.104 0.103 0.103 0.103
42.250 0.103 0.103 0.103 0.103 0.103
42.375 0.103 0.103 0.103 0.103 0.103
42.500 0.102 0.102 0.102 0.102 0.102
42.625 0.102 0.102 0.102 0.102 0.102
42.750 0.102 0.102 0.101 0.101 0.101
42.875 0.101 0.101 0.101 0.101 0.101
43.000 0.101 0.101 0.101 0.101 0.101
43.125 0.100 0.100 0.100 0.100 0.100
43.250 0.100 0.100 0.100 0.100 0.100
43.375 0.100 0.100 0.100 0.099 0.099
43.500 0.099 0.099 0.099 0.099 0.099
43.625 0.099 0.099 0.099 0.099 0.099
43.750 0.099 0.098 0.098 0.098 0.098
43.875 0.098 0.098 0.098 0.098 0.098
44.000 0.098 0.098 0.098 0.098 0.097
44.125 0.097 0.097 0.097 0.097 0.097
44.250 0.097 0.097 0.097 0.097 0.097
44.375 0.097 0.097 0.096 0.096 0.096
44.500 0.096 0.096 0.096 0.096 0.096
44.625 0.096 0.096 0.096 0.096 0.096
44.750 0.095 0.095 0.095 0.095 0.095
44.875 0.095 0.095 0.095 0.095 0.095
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86

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 2 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
45.000 0.095 0.095 0.095 0.094 0.094
45.125 0.094 0.094 0.094 0.094 0.094
45.250 0.094 0.094 0.094 0.094 0.094
45.375 0.094 0.093 0.093 0.093 0.093
45.500 0.093 0.093 0.093 0.093 0.093
45.625 0.093 0.093 0.093 0.093 0.092
45.750 0.092 0.092 0.092 0.092 0.092
45.875 0.092 0.092 0.092 0.092 0.092
46.000 0.092 0.092 0.091 0.091 0.091
46.125 0.091 0.091 0.091 0.091 0.091
46.250 0.091 0.091 0.091 0.091 0.091
46.375 0.090 0.090 0.090 0.090 0.090
46.500 0.090 0.090 0.090 0.090 0.090
46.625 0.090 0.090 0.090 0.089 0.089
46.750 0.089 0.089 0.089 0.089 0.089
46.875 0.089 0.089 0.089 0.089 0.089
47.000 0.089 0.088 0.088 0.088 0.088
47.125 0.088 0.088 0.088 0.088 0.088
47.250 0.088 0.088 0.088 0.088 0.087
47.375 0.087 0.087 0.087 0.087 0.087
47.500 0.087 0.087 0.087 0.087 0.087
47.625 0.087 0.087 0.086 0.086 0.086
47.750 0.086 0.086 0.086 0.086 0.086
47.875 0.086 0.086 0.086 0.086 0.086
48.000 0.085 0.085 0.085 0.085 0.085
48.125 0.085 0.085 0.085 0.085 0.085
48.250 0.085 0.085 0.085 0.085 0.084
48.375 0.084 0.084 0.084 0.084 0.084
48.500 0.084 0.084 0.084 0.084 0.084
48.625 0.084 0.084 0.083 0.083 0.083
48.750 0.083 0.083 0.083 0.083 0.083
48.875 0.083 0.083 0.083 0.083 0.083
49.000 0.082 0.082 0.082 0.082 0.082
49.125 0.082 0.082 0.082 0.082 0.082
49.250 0.082 0.082 0.082 0.081 0.081
49.375 0.081 0.081 0.081 0.081 0.081
49.500 0.081 0.081 0.081 0.081 0.081
49.625 0.081 0.081 0.080 0.080 0.080
49.750 0.080 0.080 0.080 0.080 0.080
49.875 0.080 0.080 0.080 0.080 0.080
50.000 0.079 0.079 0.079 0.079 0.079
50.125 0.079 0.079 0.079 0.079 0.079
50.250 0.079 0.079 0.079 0.078 0.078
50.375 0.078 0.078 0.078 0.078 0.078
50.500 0.078 0.078 0.078 0.078 0.078
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87

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 2 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
50.625 0.078 0.078 0.077 0.077 0.077
50.750 0.077 0.077 0.077 0.077 0.077
50.875 0.077 0.077 0.077 0.077 0.077
51.000 0.076 0.076 0.076 0.076 0.076
51.125 0.076 0.076 0.076 0.076 0.076
51.250 0.076 0.076 0.076 0.075 0.075
51.375 0.075 0.075 0.075 0.075 0.075
51.500 0.075 0.075 0.075 0.075 0.075
51.625 0.075 0.075 0.074 0.074 0.074
51.750 0.074 0.074 0.074 0.074 0.074
51.875 0.074 0.074 0.074 0.074 0.074
52.000 0.073 0.073 0.073 0.073 0.073
52.125 0.073 0.073 0.073 0.073 0.073
52.250 0.073 0.073 0.073 0.073 0.072
52.375 0.072 0.072 0.072 0.072 0.072
52.500 0.072 0.072 0.072 0.072 0.072
52.625 0.072 0.072 0.071 0.071 0.071
52.750 0.071 0.071 0.071 0.071 0.071
52.875 0.071 0.071 0.071 0.071 0.071
53.000 0.071 0.070 0.070 0.070 0.070
53.125 0.070 0.070 0.070 0.070 0.070
53.250 0.070 0.070 0.070 0.070 0.069
53.375 0.069 0.069 0.069 0.069 0.069
53.500 0.069 0.069 0.069 0.069 0.069
53.625 0.069 0.069 0.069 0.068 0.068
53.750 0.068 0.068 0.068 0.068 0.068
53.875 0.068 0.068 0.068 0.068 0.068
54.000 0.068 0.067 0.067 0.067 0.067
54.125 0.067 0.067 0.067 0.067 0.067
54.250 0.067 0.067 0.067 0.067 0.067
54.375 0.066 0.066 0.066 0.066 0.066
54.500 0.066 0.066 0.066 0.066 0.066
54.625 0.066 0.066 0.066 0.066 0.065
54.750 0.065 0.065 0.065 0.065 0.065
54.875 0.065 0.065 0.065 0.065 0.065
55.000 0.065 0.065 0.065 0.064 0.064
55.125 0.064 0.064 0.064 0.064 0.064
55.250 0.064 0.064 0.064 0.064 0.064
55.375 0.064 0.063 0.063 0.063 0.063
55.500 0.063 0.063 0.063 0.063 0.063
55.625 0.063 0.063 0.063 0.063 0.063
55.750 0.062 0.062 0.062 0.062 0.062
55.875 0.062 0.062 0.062 0.062 0.062
56.000 0.062 0.062 0.062 0.062 0.062
56.125 0.061 0.061 0.061 0.061 0.061
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88

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 2 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
56.250 0.061 0.061 0.061 0.061 0.061
56.375 0.061 0.061 0.061 0.060 0.060
56.500 0.060 0.060 0.060 0.060 0.060
56.625 0.060 0.060 0.060 0.060 0.060
56.750 0.060 0.060 0.060 0.059 0.059
56.875 0.059 0.059 0.059 0.059 0.059
57.000 0.059 0.059 0.059 0.059 0.059
57.125 0.059 0.059 0.058 0.058 0.058
57.250 0.058 0.058 0.058 0.058 0.058
57.375 0.058 0.058 0.058 0.058 0.058
57.500 0.058 0.057 0.057 0.057 0.057
57.625 0.057 0.057 0.057 0.057 0.057
57.750 0.057 0.057 0.057 0.057 0.057
57.875 0.056 0.056 0.056 0.056 0.056
58.000 0.056 0.056 0.056 0.056 0.056
58.125 0.056 0.056 0.056 0.056 0.055
58.250 0.055 0.055 0.055 0.055 0.055
58.375 0.055 0.055 0.055 0.055 0.055
58.500 0.055 0.055 0.055 0.054 0.054
58.625 0.054 0.054 0.054 0.054 0.054
58.750 0.054 0.054 0.054 0.054 0.054
58.875 0.054 0.054 0.054 0.053 0.053
59.000 0.053 0.053 0.053 0.053 0.053
59.125 0.053 0.053 0.053 0.053 0.053
59.250 0.053 0.053 0.053 0.052 0.052
59.375 0.052 0.052 0.052 0.052 0.052
59.500 0.052 0.052 0.052 0.052 0.052
59.625 0.052 0.052 0.051 0.051 0.051
59.750 0.051 0.051 0.051 0.051 0.051
59.875 0.051 0.051 0.051 0.051 0.051
60.000 0.051 0.051 0.050 0.050 0.050
60.125 0.050 0.050 0.050 0.050 0.050
60.250 0.050 0.050 0.050 0.050 0.050
60.375 0.050 0.049 0.049 0.049 0.049
60.500 0.049 0.049 0.049 0.049 0.049
60.625 0.049 0.049 0.049 0.049 0.049
60.750 0.049 0.048 0.048 0.048 0.048
60.875 0.048 0.048 0.048 0.048 0.048
61.000 0.048 0.048 0.048 0.048 0.048
61.125 0.048 0.047 0.047 0.047 0.047
61.250 0.047 0.047 0.047 0.047 0.047
61.375 0.047 0.047 0.047 0.047 0.047
61.500 0.046 0.046 0.046 0.046 0.046
61.625 0.046 0.046 0.046 0.046 0.046
61.750 0.046 0.046 0.046 0.046 0.046
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89

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 2 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
61.875 0.046 0.045 0.045 0.045 0.045
62.000 0.045 0.045 0.045 0.045 0.045
62.125 0.045 0.045 0.045 0.045 0.045
62.250 0.044 0.044 0.044 0.044 0.044
62.375 0.044 0.044 0.044 0.044 0.044
62.500 0.044 0.044 0.044 0.044 0.044
62.625 0.043 0.043 0.043 0.043 0.043
62.750 0.043 0.043 0.043 0.043 0.043
62.875 0.043 0.043 0.043 0.043 0.043
63.000 0.042 0.042 0.042 0.042 0.042
63.125 0.042 0.042 0.042 0.042 0.042
63.250 0.042 0.042 0.042 0.042 0.042
63.375 0.042 0.041 0.041 0.041 0.041
63.500 0.041 0.041 0.041 0.041 0.041
63.625 0.041 0.041 0.041 0.041 0.041
63.750 0.040 0.040 0.040 0.040 0.040
63.875 0.040 0.040 0.040 0.040 0.040
64.000 0.040 0.040 0.040 0.040 0.040
64.125 0.040 0.039 0.039 0.039 0.039
64.250 0.039 0.039 0.039 0.039 0.039
64.375 0.039 0.039 0.039 0.039 0.039
64.500 0.039 0.038 0.038 0.038 0.038
64.625 0.038 0.038 0.038 0.038 0.038
64.750 0.038 0.038 0.038 0.038 0.038
64.875 0.038 0.038 0.037 0.037 0.037
65.000 0.037 0.037 0.037 0.037 0.037
65.125 0.037 0.037 0.037 0.037 0.037
65.250 0.037 0.037 0.036 0.036 0.036
65.375 0.036 0.036 0.036 0.036 0.036
65.500 0.036 0.036 0.036 0.036 0.036
65.625 0.036 0.036 0.035 0.035 0.035
65.750 0.035 0.035 0.035 0.035 0.035
65.875 0.035 0.035 0.035 0.035 0.035
66.000 0.035 0.035 0.035 0.034 0.034
66.125 0.034 0.034 0.034 0.034 0.034
66.250 0.034 0.034 0.034 0.034 0.034
66.375 0.034 0.034 0.034 0.034 0.033
66.500 0.033 0.033 0.033 0.033 0.033
66.625 0.033 0.033 0.033 0.033 0.033
66.750 0.033 0.033 0.033 0.033 0.032
66.875 0.032 0.032 0.032 0.032 0.032
67.000 0.032 0.032 0.032 0.032 0.032
67.125 0.032 0.032 0.032 0.032 0.032
67.250 0.031 0.031 0.031 0.031 0.031
67.375 0.031 0.031 0.031 0.031 0.031
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90

Subsection: Time vs. Volume Return Event: 1 years
Label: BMP 2 Storm Event: SCS Type II (2.92 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
67.500 0.031 0.031 0.031 0.031 0.031
67.625 0.031 0.030 0.030 0.030 0.030
67.750 0.030 0.030 0.030 0.030 0.030
67.875 0.030 0.030 0.030 0.030 0.030
68.000 0.030 0.030 0.029 0.029 0.029
68.125 0.029 0.029 0.029 0.029 0.029
68.250 0.029 0.029 0.029 0.029 0.029
68.375 0.029 0.029 0.029 0.028 0.028
68.500 0.028 0.028 0.028 0.028 0.028
68.625 0.028 0.028 0.028 0.028 0.028
68.750 0.028 0.028 0.028 0.028 0.027
68.875 0.027 0.027 0.027 0.027 0.027
69.000 0.027 0.027 0.027 0.027 0.027
69.125 0.027 0.027 0.027 0.027 0.027
69.250 0.026 0.026 0.026 0.026 0.026
69.375 0.026 0.026 0.026 0.026 0.026
69.500 0.026 0.026 0.026 0.026 0.026
69.625 0.026 0.025 0.025 0.025 0.025
69.750 0.025 0.025 0.025 0.025 0.025
69.875 0.025 0.025 0.025 0.025 0.025
70.000 0.025 0.025 0.024 0.024 0.024
70.125 0.024 0.024 0.024 0.024 0.024
70.250 0.024 0.024 0.024 0.024 0.024
70.375 0.024 0.024 0.024 0.024 0.023
70.500 0.023 0.023 0.023 0.023 0.023
70.625 0.023 0.023 0.023 0.023 0.023
70.750 0.023 0.023 0.023 0.023 0.023
70.875 0.022 0.022 0.022 0.022 0.022
71.000 0.022 0.022 0.022 0.022 0.022
71.125 0.022 0.022 0.022 0.022 0.022
71.250 0.022 0.022 0.021 0.021 0.021
71.375 0.021 0.021 0.021 0.021 0.021
71.500 0.021 0.021 0.021 0.021 0.021
71.625 0.021 0.021 0.021 0.021 0.020
71.750 0.020 0.020 0.020 0.020 0.020
71.875 0.020 0.020 0.020 0.020 0.020
72.000 0.020 (N/A) (N/A) (N/A) (N/A)
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91

Subsection: Elevation vs. Volume Curve Return Event: 1 years
Label: BMP 1 Storm Event: SCS Type II (2.92 in)
Elevation-Volume
Pond Elevation Pond Volume
(ft) (ac-ft)
636.50 0.000
637.00 0.815
638.00 2.546
639.00 4.379
639.50 5.335
640.00 6.317
641.00 8.359
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Subsection: Elevation vs. Volume Curve Return Event: 1 years
Label: BMP 2 Storm Event: SCS Type II (2.92 in)
Elevation-Volume
Pond Elevation Pond Volume
(ft) (ac-ft)
636.00 0.000
636.50 0.017
637.00 0.070
638.00 0.248
638.50 0.353
639.00 0.467
640.00 0.723
640.50 0.862
641.00 1.009
642.00 1.327
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Subsection: Outlet Input Data Return Event: 1 years
Label: BMP 1 OS Storm Event: SCS Type II (2.92 in)
Requested Pond Water Surface Elevations
Minimum (Headwater) 636.50 ft
Increment(Headwater) 0.50 ft
Maximum (Headwater) 641.00 ft
Outlet Connectivity
Structure Type Outlet ID Direction Outfall El E2
(ft) (ft)
Orifice-Circular 4"Orifice Forward Dual 24" 636.50 641.00
Outlet
Culverts
Rectangular Weir 18"Weir Forward Dual 24" 637.37 641.00
Outlet
Culverts
Rectangular Weir 6x9 Riser Forward Dual 24" 638.00 641.00
Outlet Box Outlet
Culverts
Culvert-Circular Dual 24" Forward TW 633.49 641.00
Outlet
Culverts
Rectangular Weir Emergency Forward TW 639.83 641.00
Overflow
Tailwater Settings Tailwater (N/A) (N/A)
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Subsection: Outlet Input Data Return Event: 1 years
Label: BMP 1 OS Storm Event: SCS Type II (2.92 in)
Structure ID: Emergency Overflow
Structure Type: Rectangular Weir
Number of Openings 1
Elevation 639.83 ft
Weir Length 30.00 ft
Weir Coefficient 3.10(ft^0.5)/s
Structure ID: 6x9 Riser Outlet Box
Structure Type: Rectangular Weir
Number of Openings 1
Elevation 638.00 ft
Weir Length 28.50 ft
Weir Coefficient 3.33 (ft^0.5)/s
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Subsection: Outlet Input Data Return Event: 1 years
Label: BMP 1 OS Storm Event: SCS Type II (2.92 in)
Structure ID: Dual 24"Outlet Culverts
Structure Type: Culvert-Circular
Number of Barrels 2
Diameter 24.0 in
Length 57.00 ft
Length (Computed Barrel) 57.00 ft
Slope(Computed) 0.005 ft/ft
Outlet Control Data
Manning's n 0.012
Ke 0.500
Kb 0.011
Kr 0.500
Convergence Tolerance 0.00 ft
Inlet Control Data
Equation Form Form 1
K 0.0098
M 2.0000
C 0.0398
Y 0.6700
T1 ratio(HW/D) 1.158
T2 ratio(HW/D) 1.304
Slope Correction Factor -0.500
Use unsubmerged inlet control 0 equation below T1 elevation.
Use submerged inlet control 0 equation above T2 elevation
In transition zone between unsubmerged and submerged inlet control,
interpolate between flows at T1 &T2...
T1 Elevation 635.81 ft T1 Flow 15.55 ft3/s
T2 Elevation 636.10 ft T2 Flow 17.77 ft3/s
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Subsection: Outlet Input Data Return Event: 1 years
Label: BMP 1 OS Storm Event: SCS Type II (2.92 in)
Structure ID: 4"Orifice
Structure Type: Orifice-Circular
Number of Openings 1
Elevation 636.50 ft
Orifice Diameter 4.0 in
Orifice Coefficient 0.600
Structure ID: 18"Weir
Structure Type: Rectangular Weir
Number of Openings 1
Elevation 637.37 ft
Weir Length 1.50 ft
Weir Coefficient 3.33 (ft^0.5)/s
Structure ID: TW
Structure Type: TW Setup, DS Channel
Tailwater Type Free Outfall
Convergence Tolerances
Maximum Iterations 50
Tailwater Tolerance 0.01 ft
(Minimum)
Tailwater Tolerance 0.50 ft
(Maximum)
Headwater Tolerance 0.01 ft
(Minimum)
Headwater Tolerance 0.50 ft
(Maximum)
Flow Tolerance(Minimum) 0.010 ft3/s
Flow Tolerance(Maximum) 10.000 ft3/s
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Subsection: Individual Outlet Curves Return Event: 1 years
Label: BMP 1 OS Storm Event: SCS Type II (2.92 in)
RATING TABLE FOR ONE OUTLET TYPE
Structure ID = Emergency Overflow (Rectangular Weir)
Upstream ID = (Pond Water Surface)
Downstream ID = Tailwater (Pond Outfall)
Water Surface Flow Tailwater Elevation Convergence Error Computation Messages
Elevation (ft3/s) (ft) (ft)
(ft)
636.50 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.37 0.00 (N/A) 0.00
637.50 0.00 (N/A) 0.00 WS below an invert; no
flow.
638.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
638.50 0.00 (N/A) 0.00 WS below an invert; no
flow.
639.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
639.50 0.00 (N/A) 0.00 WS below an invert; no
flow.
639.83 0.00 (N/A) 0.00 WS below an invert; no
flow.
640.00 6.52 (N/A) 0.00 H=.17; Htw=.00;
Qfree=6.52;
640.50 51.00 (N/A) 0.00 H=.67; Htw=.00;
Qfree=51.00;
641.00 117.70 (N/A) 0.00 H=1.17;Htw=.00;
Qfree=117.70;
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Subsection: Individual Outlet Curves Return Event: 1 years
Label: BMP 1 OS Storm Event: SCS Type II (2.92 in)
RATING TABLE FOR ONE OUTLET TYPE
Structure ID = 6x9 Riser Outlet Box (Rectangular Weir)
Upstream ID = (Pond Water Surface)
Downstream ID = Dual 24" Outlet Culverts (Culvert-Circular)
Water Device (into) Converge Next Downstream Convergence Downstream Tailwater Message
Surface Flow Headwater Downstream Downstream Hydraulic Error Channel Error
Elevation (ft3/s) Hydraulic Hydraulic Hydraulic Grade Line (ft3/s) Tailwater (ft)
(ft) Grade Line Grade Line Grade Line Error (ft)
(ft) (ft) (ft) (ft)
636.50 0.00 0.00 0.00 0.00 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.00 0.00 0.00 0.00 633.67 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.37 0.00 0.00 0.00 0.00 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.50 0.00 0.00 0.00 633.78 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
638.00 0.00 0.00 0.00 634.11 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
638.50 33.44 638.50 Free Outfall 636.36 0.00 0.00 (N/A) 0.00 H=.50; Htw=.00;
Qfree=33.44;
639.00 58.31 639.00 638.80 638.80 0.00 0.00 (N/A) 0.00 H=1.00;Htw=.80;
Qfree=94.24;
639.50 64.09 639.50 639.42 639.42 0.00 0.00 (N/A) 0.00 H=1.50;Htw=1.42;
Qfree=172.52;
639.83 67.08 639.83 639.78 639.78 0.00 0.00 (N/A) 0.00 H=1.83;Htw=1.78;
Qfree=231.93;
640.00 67.78 640.00 639.96 639.96 0.00 0.00 (N/A) 0.00 H=2.00;Htw=1.96;
Qfree=264.66;
640.50 72.52 640.50 640.48 640.48 0.00 0.00 (N/A) 0.00 H=2.50;Htw=2.48;
Qfree=368.56;
641.00 75.04 641.00 640.98 640.98 0.00 0.00 (N/A) 0.00 H=3.00;Htw=2.98;
Qfree=482.76;
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Subsection: Individual Outlet Curves Return Event: 1 years
Label: BMP 1 OS Storm Event: SCS Type II (2.92 in)
RATING TABLE FOR ONE OUTLET TYPE
Structure ID = Dual 24" Outlet Culverts (Culvert-Circular)
Mannings open channel maximum capacity: 18.80 ft3/s
Upstream ID = 4" Orifice, 18" Weir, 6x9 Riser Outlet Box
Downstream ID = Tailwater (Pond Outfall)
Water Device (into) Converge Next Downstream Convergence Downstream Tailwater Message
Surface Flow Headwater Downstream Downstream Hydraulic Error Channel Error
Elevation (ft3/s) Hydraulic Hydraulic Hydraulic Grade Line (ft3/s) Tailwater (ft)
(ft) Grade Line Grade Line Grade Line Error (ft)
(ft) (ft) (ft) (ft)
636.50 0.00 0.00 0.00 Free Outfall 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.00 0.24 633.67 Free Outfall Free Outfall 0.00 0.00 (N/A) 0.00 CRIT.DEPTH CONTROL
Vh= .040ft Dcr= .117ft
H.JUMP IN PIPE
Hev= .00ft
637.37 0.40 0.00 Free Outfall Free Outfall 0.00 0.00 (N/A) 0.00 CRIT.DEPTH CONTROL
Vh= .050ft Dcr= .148ft
H.JUMP IN PIPE
Hev= .00ft
637.50 0.61 633.78 Free Outfall Free Outfall 0.00 0.00 (N/A) 0.00 CRIT.DEPTH CONTROL
Vh= .065ft Dcr= .191ft
CRIT.DEPTH Hev= .00ft
638.00 2.77 634.11 Free Outfall Free Outfall 0.00 0.01 (N/A) 0.00 CRIT.DEPTH CONTROL
Vh= .142ft Dcr= .406ft
CRIT.DEPTH Hev= .00ft
638.50 39.01 636.36 Free Outfall Free Outfall 0.00 0.10 (N/A) 0.00 INLET CONTROL...
Submerged: HW =2.87
639.00 62.78 638.80 Free Outfall Free Outfall 0.00 0.08 (N/A) 0.00 INLET CONTROL...
Submerged: HW =5.31
639.50 67.53 639.42 Free Outfall Free Outfall 0.00 0.29 (N/A) 0.00 INLET CONTROL...
Submerged: HW =5.93
639.83 70.12 639.78 Free Outfall Free Outfall 0.00 0.40 (N/A) 0.00 INLET CONTROL...
Submerged: HW =6.29
640.00 71.38 639.96 Free Outfall Free Outfall 0.00 0.33 (N/A) 0.00 INLET CONTROL...
Submerged: HW =6.47
640.50 74.86 640.48 Free Outfall Free Outfall 0.00 0.63 (N/A) 0.00 INLET CONTROL...
Submerged: HW =6.99
641.00 78.17 640.98 Free Outfall Free Outfall 0.00 0.49 (N/A) 0.00 INLET CONTROL...
Submerged: HW =7.49
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Subsection: Individual Outlet Curves Return Event: 1 years
Label: BMP 1 OS Storm Event: SCS Type II (2.92 in)
RATING TABLE FOR ONE OUTLET TYPE
Structure ID = 4" Orifice (Orifice-Circular)
Upstream ID = (Pond Water Surface)
Downstream ID = Dual 24" Outlet Culverts (Culvert-Circular)
Water Device (into) Converge Next Downstream Convergence Downstream Tailwater Message
Surface Flow Headwater Downstream Downstream Hydraulic Error Channel Error
Elevation (ft3/s) Hydraulic Hydraulic Hydraulic Grade Line (ft3/s) Tailwater (ft)
(ft) Grade Line Grade Line Grade Line Error (ft)
(ft) (ft) (ft) (ft)
636.50 0.00 0.00 0.00 0.00 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.00 0.24 637.00 Free Outfall 633.67 0.00 0.00 (N/A) 0.00 H =.33
637.37 0.35 637.37 Free Outfall 0.00 0.00 0.00 (N/A) 0.00 H =.70
637.50 0.38 637.50 Free Outfall 633.78 0.00 0.00 (N/A) 0.00 H =.83
638.00 0.48 638.00 Free Outfall 634.11 0.00 0.00 (N/A) 0.00 H =1.33
638.50 0.57 638.50 Free Outfall 636.36 0.00 0.00 (N/A) 0.00 H =1.83
639.00 0.19 639.00 638.80 638.80 0.00 0.00 (N/A) 0.00 H =.20
639.50 0.12 639.50 639.42 639.42 0.00 0.00 (N/A) 0.00 H =.08
639.83 0.09 639.83 639.78 639.78 0.00 0.00 (N/A) 0.00 H =.05
640.00 0.08 640.00 639.96 639.96 0.00 0.00 (N/A) 0.00 H =.04
640.50 0.07 640.50 640.48 640.48 0.00 0.00 (N/A) 0.00 H =.02
641.00 0.05 641.00 640.98 640.98 0.00 0.00 (N/A) 0.00 H =.02
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Subsection: Individual Outlet Curves Return Event: 1 years
Label: BMP 1 OS Storm Event: SCS Type II (2.92 in)
RATING TABLE FOR ONE OUTLET TYPE
Structure ID = 18" Weir (Rectangular Weir)
Upstream ID = (Pond Water Surface)
Downstream ID = Dual 24" Outlet Culverts (Culvert-Circular)
Water Device (into) Converge Next Downstream Convergence Downstream Tailwater Message
Surface Flow Headwater Downstream Downstream Hydraulic Error Channel Error
Elevation (ft3/s) Hydraulic Hydraulic Hydraulic Grade Line (ft3/s) Tailwater (ft)
(ft) Grade Line Grade Line Grade Line Error (ft)
(ft) (ft) (ft) (ft)
636.50 0.00 0.00 0.00 0.00 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.00 0.00 0.00 0.00 633.67 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.37 0.00 0.00 0.00 0.00 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.50 0.23 637.50 Free Outfall 633.78 0.00 0.00 (N/A) 0.00 H=.13; Htw=.00;
Qfree=.23;
638.00 2.29 638.00 Free Outfall 634.11 0.00 0.00 (N/A) 0.00 H=.63; Htw=.00;
Qfree=2.29;
638.50 5.10 638.50 Free Outfall 636.36 0.00 0.00 (N/A) 0.00 H=1.13;Htw=.00;
Qfree=5.10;
639.00 4.21 639.00 638.80 638.80 0.00 0.00 (N/A) 0.00 H=1.63;Htw=1.43;
Qfree=8.14;
639.50 3.61 639.50 639.42 639.42 0.00 0.00 (N/A) 0.00 H=2.13;Htw=2.05;
Qfree=11.12;
639.83 3.34 639.83 639.78 639.78 0.00 0.00 (N/A) 0.00 H=2.46;Htw=2.41;
Qfree=12.95;
640.00 3.19 640.00 639.96 639.96 0.00 0.00 (N/A) 0.00 H=2.63;Htw=2.59;
Qfree=13.83;
640.50 2.91 640.50 640.48 640.48 0.00 0.00 (N/A) 0.00 H=3.13;Htw=3.11;
Qfree=16.12;
641.00 2.58 641.00 640.98 640.98 0.00 0.00 (N/A) 0.00 H=3.63;Htw=3.61;
Qfree=17.83;
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Subsection: Composite Rating Curve Return Event: 1 years
Label: BMP 1 OS Storm Event: SCS Type II (2.92 in)
Composite Outflow Summary
Water Surface Flow Tailwater Elevation Convergence Error Contributing Structures
Elevation (ft3/s) (ft) (ft)
(ft)
636.50 0.00 (N/A) 0.00 (no Q: 4"Orifice,18"
Weir,6x9 Riser Outlet
Box,Dual 24"Outlet
Culverts,Emergency
Overflow)
637.00 0.24 (N/A) 0.00 4"Orifice,Dual 24"Outlet
Culverts (no Q: 18"
Weir,6x9 Riser Outlet
Box,Emergency Overflow)
637.37 0.35 (N/A) 0.00 4"Orifice,Dual 24"Outlet
Culverts (no Q: 18"
Weir,6x9 Riser Outlet
Box,Emergency Overflow)
637.50 0.61 (N/A) 0.00 4"Orifice,18"Weir,Dual
24"Outlet Culverts (no
Q: 6x9 Riser Outlet
Box,Emergency Overflow)
638.00 2.77 (N/A) 0.00 4"Orifice,18"Weir,Dual
24"Outlet Culverts (no
Q: 6x9 Riser Outlet
Box,Emergency Overflow)
638.50 39.01 (N/A) 0.00 4"Orifice,18"Weir,6x9
Riser Outlet Box,Dual 24"
Outlet Culverts (no Q:
Emergency Overflow)
639.00 62.78 (N/A) 0.00 4"Orifice,18"Weir,6x9
Riser Outlet Box,Dual 24"
Outlet Culverts (no Q:
Emergency Overflow)
639.50 67.53 (N/A) 0.00 4"Orifice,18"Weir,6x9
Riser Outlet Box,Dual 24"
Outlet Culverts (no Q:
Emergency Overflow)
639.83 70.12 (N/A) 0.00 4"Orifice,18"Weir,6x9
Riser Outlet Box,Dual 24"
Outlet Culverts (no Q:
Emergency Overflow)
640.00 77.90 (N/A) 0.00 4"Orifice,18"Weir,6x9
Riser Outlet Box,Dual 24"
Outlet Culverts,Emergency
Overflow
640.50 125.87 (N/A) 0.00 4"Orifice,18"Weir,6x9
Riser Outlet Box,Dual 24"
Outlet Culverts,Emergency
Overflow
641.00 195.86 (N/A) 0.00 4"Orifice,18"Weir,6x9
Riser Outlet Box,Dual 24"
Outlet Culverts,Emergency
Overflow
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Subsection: Outlet Input Data Return Event: 1 years
Label: BMP 2 OS Storm Event: SCS Type II (2.92 in)
Requested Pond Water Surface Elevations
Minimum (Headwater) 636.00 ft
Increment(Headwater) 0.50 ft
Maximum (Headwater) 642.00 ft
Outlet Connectivity
Structure Type Outlet ID Direction Outfall El E2
(ft) (ft)
User Defined Sand Media Forward 36"Outlet 0.00 642.00
Table Culvert
Rectangular Weir 12"Weir Forward 36"Outlet 637.50 642.00
Culvert
Rectangular Weir Riser Forward 36"Outlet 640.00 642.00
Outlet Box Culvert
Culvert-Circular 36"Outlet Forward TW 630.45 642.00
Culvert
Rectangular Weir Emergency Forward TW 640.50 642.00
Overflow
Tailwater Settings Tailwater (N/A) (N/A)
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Subsection: Outlet Input Data Return Event: 1 years
Label: BMP 2 OS Storm Event: SCS Type II (2.92 in)
Structure ID: Sand Media
Structure Type: User Defined Table
Elevation Flow
(ft) (ft3/s)
636.00 0.00
636.50 0.03
637.00 0.04
638.00 0.05
638.50 0.06
639.00 0.06
640.00 0.08
640.50 0.08
641.00 0.09
642.00 0.11
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Subsection: Outlet Input Data Return Event: 1 years
Label: BMP 2 OS Storm Event: SCS Type II (2.92 in)
Structure ID: 36"Outlet Culvert
Structure Type: Culvert-Circular
Number of Barrels 1
Diameter 36.0 in
Length 69.00 ft
Length (Computed Barrel) 69.00 ft
Slope(Computed) 0.005 ft/ft
Outlet Control Data
Manning's n 0.012
Ke 0.500
Kb 0.006
Kr 0.500
Convergence Tolerance 0.00 ft
Inlet Control Data
Equation Form Form 1
K 0.0098
M 2.0000
C 0.0398
Y 0.6700
T1 ratio(HW/D) 1.158
T2 ratio(HW/D) 1.304
Slope Correction Factor -0.500
Use unsubmerged inlet control 0 equation below T1 elevation.
Use submerged inlet control 0 equation above T2 elevation
In transition zone between unsubmerged and submerged inlet control,
interpolate between flows at T1 &T2...
T1 Elevation 633.92 ft T1 Flow 42.85 ft3/s
T2 Elevation 634.36 ft T2 Flow 48.97 ft3/s
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Subsection: Outlet Input Data Return Event: 1 years
Label: BMP 2 OS Storm Event: SCS Type II (2.92 in)
Structure ID: Riser Outlet Box
Structure Type: Rectangular Weir
Number of Openings 1
Elevation 640.00 ft
Weir Length 15.00 ft
Weir Coefficient 3.33 (ft^0.5)/s
Structure ID: Emergency Overflow
Structure Type: Rectangular Weir
Number of Openings 1
Elevation 640.50 ft
Weir Length 20.00 ft
Weir Coefficient 3.10(ft^0.5)/s
Structure ID: 12"Weir
Structure Type: Rectangular Weir
Number of Openings 1
Elevation 637.50 ft
Weir Length 1.00 ft
Weir Coefficient 3.33 (ft^0.5)/s
Structure ID: TW
Structure Type: TW Setup, DS Channel
Tailwater Type Free Outfall
Convergence Tolerances
Maximum Iterations 50
Tailwater Tolerance 0.01 ft
(Minimum)
Tailwater Tolerance 0.50 ft
(Maximum)
Headwater Tolerance 0.01 ft
(Minimum)
Headwater Tolerance 0.50 ft
(Maximum)
Flow Tolerance(Minimum) 0.010 ft3/s
Flow Tolerance(Maximum) 10.000 ft3/s
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Subsection: Individual Outlet Curves Return Event: 1 years
Label: BMP 2 OS Storm Event: SCS Type II (2.92 in)
RATING TABLE FOR ONE OUTLET TYPE
Structure ID = Sand Media (User Defined Table)
Upstream ID = (Pond Water Surface)
Downstream ID = 36" Outlet Culvert (Culvert-Circular)
Water Device (into) Converge Next Downstream Convergence Downstream Tailwater Message
Surface Flow Headwater Downstream Downstream Hydraulic Error Channel Error
Elevation (ft3/s) Hydraulic Hydraulic Hydraulic Grade Line (ft3/s) Tailwater (ft)
(ft) Grade Line Grade Line Grade Line Error (ft)
(ft) (ft) (ft) (ft)
636.00 0.00 636.00 630.45 630.45 0.00 0.00 (N/A) 0.00
636.50 0.03 636.50 630.53 630.53 0.00 0.00 (N/A) 0.00
637.00 0.04 637.00 630.54 630.54 0.00 0.00 (N/A) 0.00
637.50 0.04 637.50 630.54 630.54 0.00 0.00 (N/A) 0.00 Interpolated from input
table
638.00 0.05 638.00 630.94 630.94 0.00 0.00 (N/A) 0.00
638.50 0.06 638.50 631.23 631.23 0.00 0.00 (N/A) 0.00
639.00 0.06 639.00 631.44 631.44 0.00 0.00 (N/A) 0.00
639.50 0.07 639.50 631.60 631.60 0.00 0.00 (N/A) 0.00 Interpolated from input
table
640.00 0.08 640.00 631.70 631.70 0.00 0.00 (N/A) 0.00
640.50 0.08 640.50 633.01 633.01 0.00 0.00 (N/A) 0.00
641.00 0.09 641.00 634.94 634.94 0.00 0.00 (N/A) 0.00
641.50 0.10 641.50 639.54 639.54 0.00 0.00 (N/A) 0.00 Interpolated from input
table
642.00 0.11 642.00 641.30 641.30 0.00 0.00 (N/A) 0.00
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Subsection: Individual Outlet Curves Return Event: 1 years
Label: BMP 2 OS Storm Event: SCS Type II (2.92 in)
RATING TABLE FOR ONE OUTLET TYPE
Structure ID = 36" Outlet Culvert (Culvert-Circular)
Mannings open channel maximum capacity: 55.36 ft3/s
Upstream ID = Sand Media, 12" Weir, Riser Outlet Box
Downstream ID = Tailwater (Pond Outfall)
Water Device (into) Converge Next Downstream Convergence Downstream Tailwater Message
Surface Flow Headwater Downstream Downstream Hydraulic Error Channel Error
Elevation (ft3/s) Hydraulic Hydraulic Hydraulic Grade Line (ft3/s) Tailwater (ft)
(ft) Grade Line Grade Line Grade Line Error (ft)
(ft) (ft) (ft) (ft)
636.00 0.00 630.45 Free Outfall Free Outfall 0.00 0.00 (N/A) 0.00 REMARKS: Upstream HW
&DNstream TW < Inv.El
636.50 0.03 630.53 Free Outfall Free Outfall 0.00 0.00 (N/A) 0.00 BACKWATER CONTROL..
Vh= .014ft hwDi= .056ft
Lbw= 69.0ft Hev= .00ft
637.00 0.04 630.54 Free Outfall Free Outfall 0.00 0.00 (N/A) 0.00 BACKWATER CONTROL..
Vh= .016ft hwDi= .061ft
Lbw= 69.0ft Hev= .00ft
637.50 0.04 630.54 Free Outfall Free Outfall 0.00 0.00 (N/A) 0.00 BACKWATER CONTROL..
Vh= .019ft hwDi= .065ft
Lbw= 69.0ft Hev= .00ft
638.00 1.10 630.94 Free Outfall Free Outfall 0.00 0.00 (N/A) 0.00 CRIT.DEPTH CONTROL
Vh= .111ft Dcr= .325ft
CRIT.DEPTH Hev= .00ft
638.50 2.72 631.23 Free Outfall Free Outfall 0.00 0.00 (N/A) 0.00 CRIT.DEPTH CONTROL
Vh= .178ft Dcr= .512ft
CRIT.DEPTH Hev= .00ft
639.00 4.35 631.44 Free Outfall Free Outfall 0.00 0.00 (N/A) 0.00 CRIT.DEPTH CONTROL
Vh= .229ft Dcr= .652ft
CRIT.DEPTH Hev= .00ft
639.50 5.72 631.60 Free Outfall Free Outfall 0.00 0.00 (N/A) 0.00 CRIT.DEPTH CONTROL
I
Vh= .266ft Dcr= .750ft
CRIT.DEPTH Hev= .00ft
640.00 6.65 631.70 Free Outfall Free Outfall 0.00 0.01 (N/A) 0.00 CRIT.DEPTH CONTROL
Vh= .289ft Dcr= .811ft
CRIT.DEPTH Hev= .00ft
640.50 24.56 633.01 Free Outfall Free Outfall 0.00 0.01 (N/A) 0.00 CRIT.DEPTH CONTROL
Vh= .639ft Dcr= 1.598ft
CRIT.DEPTH Hev= .00ft
641.00 55.91 634.94 Free Outfall Free Outfall 0.00 0.01 (N/A) 0.00 INLET CONTROL...
Submerged: HW =4.49
641.50 94.34 639.54 Free Outfall Free Outfall 0.00 0.16 (N/A) 0.00 INLET CONTROL...
Submerged: HW =9.09
642.00 105.38 641.30 Free Outfall Free Outfall 0.00 0.05 (N/A) 0.00 INLET CONTROL...
Submerged: HW =10.85
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Subsection: Individual Outlet Curves Return Event: 1 years
Label: BMP 2 OS Storm Event: SCS Type II (2.92 in)
RATING TABLE FOR ONE OUTLET TYPE
Structure ID = Riser Outlet Box (Rectangular Weir)
Upstream ID = (Pond Water Surface)
Downstream ID = 36" Outlet Culvert (Culvert-Circular)
Water Device (into) Converge Next Downstream Convergence Downstream Tailwater Message
Surface Flow Headwater Downstream Downstream Hydraulic Error Channel Error
Elevation (ft3/s) Hydraulic Hydraulic Hydraulic Grade Line (ft3/s) Tailwater (ft)
(ft) Grade Line Grade Line Grade Line Error (ft)
(ft) (ft) (ft) (ft)
636.00 0.00 0.00 0.00 630.45 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
636.50 0.00 0.00 0.00 630.53 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.00 0.00 0.00 0.00 630.54 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.50 0.00 0.00 0.00 630.54 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
638.00 0.00 0.00 0.00 630.94 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
638.50 0.00 0.00 0.00 631.23 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
639.00 0.00 0.00 0.00 631.44 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
639.50 0.00 0.00 0.00 631.60 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
640.00 0.00 0.00 0.00 631.70 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
640.50 17.54 640.50 Free Outfall 633.01 0.00 0.00 (N/A) 0.00 H=.50; Htw=.00;
Qfree=17.54;
641.00 49.28 641.00 Free Outfall 634.94 0.00 0.00 (N/A) 0.00 H=1.00;Htw=.00;
Qfree=49.28;
641.50 89.93 641.50 Free Outfall 639.54 0.00 0.00 (N/A) 0.00 H=1.50;Htw=.00;
Qfree=89.93;
642.00 103.43 642.00 641.30 641.30 0.00 0.00 (N/A) 0.00 H=2.00;Htw=1.30;
Qfree=137.51;
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Subsection: Individual Outlet Curves Return Event: 1 years
Label: BMP 2 OS Storm Event: SCS Type II (2.92 in)
RATING TABLE FOR ONE OUTLET TYPE
Structure ID = Emergency Overflow (Rectangular Weir)
Upstream ID = (Pond Water Surface)
Downstream ID = Tailwater (Pond Outfall)
Water Surface Flow Tailwater Elevation Convergence Error Computation Messages
Elevation (ft3/s) (ft) (ft)
(ft)
636.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
636.50 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.50 0.00 (N/A) 0.00 WS below an invert; no
flow.
638.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
638.50 0.00 (N/A) 0.00 WS below an invert; no
flow.
639.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
639.50 0.00 (N/A) 0.00 WS below an invert; no
flow.
640.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
640.50 0.00 (N/A) 0.00 WS below an invert; no
flow.
641.00 21.92 (N/A) 0.00 H=.50; Htw=.00;
Qfree=21.92;
641.50 62.00 (N/A) 0.00 H=1.00;Htw=.00;
Qfree=62.00;
642.00 113.90 (N/A) 0.00 H=1.50;Htw=.00;
Qfree=113.90;
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Subsection: Individual Outlet Curves Return Event: 1 years
Label: BMP 2 OS Storm Event: SCS Type II (2.92 in)
RATING TABLE FOR ONE OUTLET TYPE
Structure ID = 12" Weir (Rectangular Weir)
Upstream ID = (Pond Water Surface)
Downstream ID = 36" Outlet Culvert (Culvert-Circular)
Water Device (into) Converge Next Downstream Convergence Downstream Tailwater Message
Surface Flow Headwater Downstream Downstream Hydraulic Error Channel Error
Elevation (ft3/s) Hydraulic Hydraulic Hydraulic Grade Line (ft3/s) Tailwater (ft)
(ft) Grade Line Grade Line Grade Line Error (ft)
(ft) (ft) (ft) (ft)
636.00 0.00 0.00 0.00 630.45 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
636.50 0.00 0.00 0.00 630.53 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.00 0.00 0.00 0.00 630.54 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
637.50 0.00 0.00 0.00 630.54 0.00 0.00 (N/A) 0.00 WS below an invert; no
flow.
638.00 1.06 638.00 Free Outfall 630.94 0.00 0.00 (N/A) 0.00 H=.50; Htw=.00;
Qfree=1.06;
638.50 2.66 638.50 Free Outfall 631.23 0.00 0.00 (N/A) 0.00 H=1.00;Htw=.00;
Qfree=2.66;
639.00 4.28 639.00 Free Outfall 631.44 0.00 0.00 (N/A) 0.00 H=1.50;Htw=.00;
Qfree=4.28;
639.50 5.65 639.50 Free Outfall 631.60 0.00 0.00 (N/A) 0.00 H=2.00;Htw=.00;
Qfree=5.65;
640.00 6.58 640.00 Free Outfall 631.70 0.00 0.00 (N/A) 0.00 H=2.50;Htw=.00;
Qfree=6.58;
640.50 6.92 640.50 Free Outfall 633.01 0.00 0.00 (N/A) 0.00 H=3.00;Htw=.00;
Qfree=6.92;
641.00 6.54 641.00 Free Outfall 634.94 0.00 0.00 (N/A) 0.00 H=3.50;Htw=.00;
Qfree=6.54;
641.50 4.47 641.50 639.54 639.54 0.00 0.00 (N/A) 0.00 H=4.00;Htw=2.04;
Qfree=5.33;
642.00 1.79 642.00 641.30 641.30 0.00 0.00 (N/A) 0.00 H=4.50;Htw=3.80;
Qfree=3.18;
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Subsection: Composite Rating Curve Return Event: 1 years
Label: BMP 2 OS Storm Event: SCS Type II (2.92 in)
Composite Outflow Summary
Water Surface Flow Tailwater Elevation Convergence Error Contributing Structures
Elevation (ft3/s) (ft) (ft)
(ft)
636.00 0.00 (N/A) 0.00 (no Q: Sand Media,12"
Weir,Riser Outlet Box,36"
Outlet Culvert,Emergency
Overflow)
636.50 0.03 (N/A) 0.00 Sand Media,36"Outlet
Culvert (no Q: 12"
Weir,Riser Outlet
Box,Emergency Overflow)
637.00 0.04 (N/A) 0.00 Sand Media,36"Outlet
Culvert (no Q: 12"
Weir,Riser Outlet
Box,Emergency Overflow)
637.50 0.04 (N/A) 0.00 Sand Media,36"Outlet
Culvert (no Q: 12"
Weir,Riser Outlet
Box,Emergency Overflow)
638.00 1.10 (N/A) 0.00 Sand Media,12"Weir,36"
Outlet Culvert (no Q:
Riser Outlet
Box,Emergency Overflow)
638.50 2.72 (N/A) 0.00 Sand Media,12"Weir,36"
Outlet Culvert (no Q:
Riser Outlet
Box,Emergency Overflow)
639.00 4.35 (N/A) 0.00 Sand Media,12"Weir,36"
Outlet Culvert (no Q:
Riser Outlet
Box,Emergency Overflow)
639.50 5.72 (N/A) 0.00 Sand Media,12"Weir,36"
Outlet Culvert (no Q:
Riser Outlet
Box,Emergency Overflow)
640.00 6.65 (N/A) 0.00 Sand Media,12"Weir,36"
Outlet Culvert (no Q:
Riser Outlet
Box,Emergency Overflow)
640.50 24.56 (N/A) 0.00 Sand Media,12"
Weir,Riser Outlet Box,36"
Outlet Culvert (no Q:
Emergency Overflow)
641.00 77.83 (N/A) 0.00 Sand Media,12"
Weir,Riser Outlet Box,36"
Outlet Culvert,Emergency
Overflow
641.50 156.34 (N/A) 0.00 Sand Media,12"
Weir,Riser Outlet Box,36"
Outlet Culvert,Emergency
Overflow
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Subsection: Composite Rating Curve Return Event: 1 years
Label: BMP 2 OS Storm Event: SCS Type II (2.92 in)
Composite Outflow Summary
Water Surface Flow Tailwater Elevation Convergence Error Contributing Structures
Elevation (ft3/s) (ft) (ft)
(ft)
642.00 219.28 (N/A) 0.00 Sand Media,12"
Weir,Riser Outlet Box,36"
Outlet Culvert,Emergency
Overflow
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Subsection: Master Network Summary
Catchments Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ac-ft)
POST DA-1 100-yr 100 16.763 11.925 311.65
POST DA-2 100-yr 100 2.202 11.925 41.17
POST DA-3 BYPASS 100-yr 100 11.226 12.100 146.24
POST DA-4 BYPASS 100-yr 100 0.501 11.925 9.43
PRE DA-1 100-yr 100 24.490 12.325 199.47
PRE-DA-2 100-yr 100 0.771 11.925 14.51
Node Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow
Event Volume (hours) (ft3/s)
(years) (ac-ft)
POST OUT 1 100-yr 100 ' 29.501 12.075 283.85
POST OUT 2 100-yr 100 0.501 11.925 9.43
PRE OUT 1 100-yr 100 24.490 12.325 199.47
PRE OUT 2 100-yr 100 0.771 11.925 14.51
Pond Summary
Label Scenario Return Hydrograph Time to Peak Peak Flow Maximum Maximum
Event Volume (hours) (ft3/s) Water Pond Storage
(years) (ac-ft) Surface (ac-ft)
Elevation
(ft)
BMP 1 (IN) I 100-yr 100 16.763 11.925 311.65 (N/A) (N/A)
BMP 1 (OUT) 100-yr 100 16.096 12.075 115.42 640.39 7.115
BMP 2(IN) 100-yr 100 2.202 11.925 41.17 (N/A) (N/A)
BMP 2(OUT) 100-yr 100 2.179 12.050 23.64 640.47 0.855
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Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 1 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
0.000 0.000 0.000 0.000 0.000 0.000
0.125 0.000 0.000 0.000 0.000 0.000
0.250 0.000 0.000 0.000 0.000 0.000
0.375 0.000 0.000 0.000 0.000 0.000
0.500 0.000 0.000 0.000 0.000 0.000
0.625 0.000 0.000 0.000 0.000 0.000
0.750 0.000 0.000 0.000 0.000 0.000
0.875 0.000 0.000 0.000 0.000 0.000
1.000 0.000 0.000 0.000 0.000 0.000
1.125 0.000 0.000 0.000 0.000 0.000
1.250 0.000 0.000 0.000 0.000 0.000
1.375 0.000 0.000 0.000 0.000 0.000
1.500 0.000 0.000 0.000 0.000 0.000
1.625 0.000 0.000 0.000 0.000 0.000
1.750 0.000 0.000 0.000 0.000 0.000
1.875 0.000 0.000 0.000 0.000 0.000
2.000 0.000 0.000 0.000 0.000 0.000
2.125 0.000 0.000 0.000 0.000 0.000
2.250 0.000 0.000 0.000 0.000 0.000
2.375 0.000 0.000 0.000 0.000 0.000
2.500 0.000 0.000 0.000 0.000 0.000
2.625 0.000 0.000 0.000 0.000 0.000
2.750 0.000 0.000 0.000 0.000 0.000
2.875 0.000 0.000 0.000 0.000 0.000
3.000 0.000 0.000 0.000 0.000 0.000
3.125 0.000 0.000 0.000 0.000 0.000
3.250 0.000 0.000 0.000 0.000 0.000
3.375 0.000 0.000 0.000 0.000 0.000
3.500 0.000 0.000 0.000 0.000 0.000
3.625 0.000 0.000 0.000 0.000 0.000
3.750 0.000 0.000 0.000 0.000 0.000
3.875 0.000 0.000 0.000 0.000 0.000
4.000 0.000 0.000 0.000 0.000 0.000
4.125 0.000 0.000 0.000 0.000 0.000
4.250 0.000 0.000 0.000 0.000 0.000
4.375 0.000 0.000 0.000 0.000 0.000
4.500 0.000 0.000 0.000 0.000 0.000
4.625 0.000 0.000 0.000 0.000 0.000
4.750 0.000 0.000 0.000 0.000 0.000
4.875 0.000 0.000 0.000 0.000 0.000
5.000 0.000 0.000 0.000 0.000 0.000
5.125 0.000 0.000 0.000 0.000 0.000
5.250 0.000 0.000 0.000 0.000 0.000
5.375 0.000 0.000 0.000 0.000 0.000
5.500 0.000 0.000 0.000 0.000 0.000
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Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 1 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
5.625 0.000 0.000 0.000 0.000 0.000
5.750 0.000 0.000 0.000 0.000 0.000
5.875 0.000 0.000 0.000 0.000 0.001
6.000 0.001 0.001 0.001 0.001 0.002
6.125 0.002 0.002 0.003 0.003 0.004
6.250 0.004 0.005 0.005 0.006 0.006
6.375 0.007 0.007 0.008 0.009 0.009
6.500 0.010 0.011 0.012 0.013 0.013
6.625 0.014 0.015 0.016 0.017 0.018
6.750 0.019 0.020 0.021 0.022 0.024
6.875 0.025 0.026 0.027 0.028 0.030
7.000 0.031 0.032 0.034 0.035 0.037
7.125 0.038 0.040 0.041 0.043 0.044
7.250 0.046 0.048 0.049 0.051 0.053
7.375 0.055 0.057 0.058 0.060 0.062
7.500 0.064 0.066 0.068 0.070 0.072
7.625 0.075 0.077 0.079 0.081 0.083
7.750 0.086 0.088 0.090 0.093 0.095
7.875 0.098 0.100 0.103 0.105 0.108
8.000 0.110 0.113 0.116 0.119 0.121
8.125 0.124 0.127 0.130 0.133 0.136
8.250 0.139 0.143 0.146 0.149 0.153
8.375 0.156 0.160 0.163 0.167 0.171
8.500 0.175 0.179 0.183 0.187 0.191
8.625 0.195 0.199 0.204 0.208 0.213
8.750 0.218 0.222 0.227 0.232 0.237
8.875 0.242 0.247 0.252 0.258 0.263
9.000 0.269 0.274 0.280 0.286 0.292
9.125 0.297 0.303 0.309 0.315 0.322
9.250 0.328 0.334 0.340 0.346 0.353
9.375 0.359 0.365 0.372 0.378 0.385
9.500 0.391 0.398 0.405 0.412 0.418
9.625 0.425 0.433 0.440 0.447 0.455
9.750 0.462 0.470 0.478 0.486 0.494
9.875 0.503 0.511 0.520 0.528 0.537
10.000 0.547 0.556 0.565 0.575 0.585
10.125 0.595 0.605 0.615 0.626 0.637
10.250 0.648 0.659 0.671 0.682 0.694
10.375 0.706 0.719 0.732 0.745 0.758
10.500 0.771 0.785 0.799 0.813 0.828
10.625 0.843 0.858 0.874 0.890 0.906
10.750 0.923 0.941 0.958 0.976 0.995
10.875 1.014 1.033 1.053 1.073 1.094
11.000 1.115 1.137 1.159 1.182 1.206
11.125 1.231 1.256 1.282 1.310 1.338
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Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 1 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
11.250 1.367 1.397 1.429 1.461 1.494
11.375 1.529 1.564 1.601 1.638 1.677
11.500 1.717 1.759 1.811 1.876 1.953
11.625 2.040 2.149 2.288 2.452 2.633
11.750 2.835 3.064 3.311 3.576 3.892
11.875 4.288 4.751 5.250 5.734 6.168
12.000 6.543 6.851 7.051 7.115 7.081
12.125 7.000 6.900 6.795 6.691 6.592
12.250 6.499 6.410 6.326 6.246 6.167
12.375 6.088 6.010 5.932 5.853 5.770
12.500 5.685 5.598 5.510 5.420 5.329
12.625 5.238 5.146 5.055 4.963 4.872
12.750 4.782 4.691 4.600 4.510 4.421
12.875 4.332 4.246 4.164 4.086 4.011
13.000 3.939 3.871 3.805 3.742 3.682
13.125 3.625 3.571 3.518 3.468 3.421
13.250 3.377 3.336 3.298 3.263 3.230
13.375 3.199 3.171 3.144 3.119 3.095
13.500 3.073 3.053 3.034 3.015 2.998
13.625 2.982 2.967 2.953 2.940 2.927
13.750 2.916 2.904 2.894 2.884 2.875
13.875 2.866 2.857 2.849 2.841 2.834
14.000 2.827 2.820 2.813 2.807 2.801
14.125 2.796 2.791 2.786 2.781 2.777
14.250 2.773 2.769 2.765 2.762 2.758
14.375 2.755 2.752 2.749 2.747 2.744
14.500 2.742 2.739 2.737 2.735 2.733
14.625 2.731 2.729 2.727 2.725 2.723
14.750 2.722 2.720 2.718 2.717 2.715
14.875 2.713 2.712 2.710 2.709 2.707
15.000 2.706 2.705 2.703 2.702 2.700
15.125 2.699 2.698 2.696 2.695 2.694
15.250 2.693 2.691 2.690 2.689 2.687
15.375 2.686 2.685 2.684 2.682 2.681
15.500 2.680 2.679 2.677 2.676 2.675
15.625 2.674 2.672 2.671 2.670 2.669
15.750 2.668 2.666 2.665 2.664 2.663
15.875 2.662 2.660 2.659 2.658 2.657
16.000 2.655 2.654 2.653 2.652 2.651
16.125 2.650 2.649 2.648 2.647 2.646
16.250 2.645 2.644 2.643 2.642 2.642
16.375 2.641 2.640 2.640 2.639 2.638
16.500 2.638 2.637 2.636 2.636 2.635
16.625 2.635 2.634 2.634 2.633 2.633
16.750 2.632 2.632 2.631 2.631 2.630
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Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 1 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
16.875 2.630 2.629 2.629 2.628 2.628
17.000 2.627 2.627 2.626 2.626 2.625
17.125 2.625 2.625 2.624 2.624 2.623
17.250 2.623 2.622 2.622 2.621 2.621
17.375 2.621 2.620 2.620 2.619 2.619
17.500 2.618 2.618 2.618 2.617 2.617
17.625 2.616 2.616 2.615 2.615 2.614
17.750 2.614 2.614 2.613 2.613 2.612
17.875 2.612 2.611 2.611 2.611 2.610
18.000 2.610 2.609 2.609 2.608 2.608
18.125 2.608 2.607 2.607 2.606 2.606
18.250 2.605 2.605 2.605 2.604 2.604
18.375 2.603 2.603 2.602 2.602 2.601
18.500 2.601 2.601 2.600 2.600 2.599
18.625 2.599 2.598 2.598 2.598 2.597
18.750 2.597 2.596 2.596 2.595 2.595
18.875 2.595 2.594 2.594 2.593 2.593
19.000 2.592 2.592 2.592 2.591 2.591
19.125 2.590 2.590 2.589 2.589 2.588
19.250 2.588 2.588 2.587 2.587 2.586
19.375 2.586 2.585 2.585 2.585 2.584
19.500 2.584 2.583 2.583 2.582 2.582
19.625 2.581 2.581 2.581 2.580 2.580
19.750 2.579 2.579 2.578 2.578 2.578
19.875 2.577 2.577 2.576 2.576 2.575
20.000 2.575 2.574 2.574 2.574 2.573
20.125 2.573 2.572 2.572 2.572 2.572
20.250 2.571 2.571 2.571 2.570 2.570
20.375 2.570 2.570 2.570 2.569 2.569
20.500 2.569 2.569 2.569 2.569 2.568
20.625 2.568 2.568 2.568 2.568 2.568
20.750 2.568 2.567 2.567 2.567 2.567
20.875 2.567 2.567 2.567 2.567 2.567
21.000 2.566 2.566 2.566 2.566 2.566
21.125 2.566 2.566 2.566 2.566 2.566
21.250 2.565 2.565 2.565 2.565 2.565
21.375 2.565 2.565 2.565 2.565 2.565
21.500 2.565 2.565 2.564 2.564 2.564
21.625 2.564 2.564 2.564 2.564 2.564
21.750 2.564 2.564 2.564 2.563 2.563
21.875 2.563 2.563 2.563 2.563 2.563
22.000 2.563 2.563 2.563 2.563 2.563
22.125 2.562 2.562 2.562 2.562 2.562
22.250 2.562 2.562 2.562 2.562 2.562
22.375 2.562 2.562 2.561 2.561 2.561
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Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 1 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
22.500 2.561 2.561 2.561 2.561 2.561
22.625 2.561 2.561 2.561 2.560 2.560
22.750 2.560 2.560 2.560 2.560 2.560
22.875 2.560 2.560 2.560 2.560 2.560
23.000 2.559 2.559 2.559 2.559 2.559
23.125 2.559 2.559 2.559 2.559 2.559
23.250 2.559 2.558 2.558 2.558 2.558
23.375 2.558 2.558 2.558 2.558 2.558
23.500 2.558 2.558 2.558 2.557 2.557
23.625 2.557 2.557 2.557 2.557 2.557
23.750 2.557 2.557 2.557 2.557 2.557
23.875 2.556 2.556 2.556 2.556 2.556
24.000 2.556 2.556 2.554 2.551 2.547
24.125 2.542 2.536 2.531 2.525 2.520
24.250 2.514 2.509 2.503 2.498 2.492
24.375 2.487 2.481 2.476 2.471 2.465
24.500 2.460 2.455 2.450 2.444 2.439
24.625 2.434 2.429 2.424 2.419 2.414
24.750 2.409 2.404 2.399 2.394 2.389
24.875 2.384 2.379 2.374 2.369 2.365
25.000 2.360 2.355 2.350 2.346 2.341
25.125 2.336 2.332 2.327 2.323 2.318
25.250 2.314 2.309 2.305 2.300 2.296
25.375 2.291 2.287 2.283 2.278 2.274
25.500 2.270 2.265 2.261 2.257 2.253
25.625 2.248 2.244 2.240 2.236 2.232
25.750 2.228 2.224 2.220 2.216 2.212
25.875 2.208 2.204 2.200 2.196 2.192
26.000 2.188 2.184 2.180 2.176 2.173
26.125 2.169 2.165 2.161 2.158 2.154
26.250 2.150 2.147 2.143 2.139 2.136
26.375 2.132 2.128 2.125 2.121 2.118
26.500 2.114 2.111 2.107 2.104 2.101
26.625 2.097 2.094 2.090 2.087 2.084
26.750 2.080 2.077 2.074 2.070 2.067
26.875 2.064 2.061 2.058 2.054 2.051
27.000 2.048 2.045 2.042 2.039 2.036
27.125 2.032 2.029 2.026 2.023 2.020
27.250 2.017 2.014 2.011 2.008 2.005
27.375 2.002 2.000 1.997 1.994 1.991
27.500 1.988 1.985 1.982 1.980 1.977
27.625 1.974 1.971 1.969 1.966 1.963
27.750 1.960 1.958 1.955 1.952 1.950
27.875 1.947 1.944 1.942 1.939 1.937
28.000 1.934 1.931 1.929 1.926 1.924
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Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 1 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
28.125 1.921 1.919 1.916 1.914 1.911
28.250 1.909 1.907 1.904 1.902 1.899
28.375 1.897 1.895 1.892 1.890 1.888
28.500 1.885 1.883 1.881 1.878 1.876
28.625 1.874 1.872 1.869 1.867 1.865
28.750 1.863 1.861 1.858 1.856 1.854
28.875 1.852 1.850 1.848 1.846 1.843
29.000 1.841 1.839 1.837 1.835 1.833
29.125 1.831 1.829 1.827 1.825 1.823
29.250 1.821 1.819 1.817 1.815 1.813
29.375 1.811 1.809 1.807 1.805 1.803
29.500 1.802 1.800 1.798 1.796 1.794
29.625 1.792 1.790 1.789 1.787 1.785
29.750 1.783 1.781 1.780 1.778 1.776
29.875 1.774 1.773 1.771 1.769 1.767
30.000 1.766 1.764 1.762 1.761 1.759
30.125 1.757 1.756 1.754 1.752 1.751
30.250 1.749 1.748 1.746 1.744 1.743
30.375 1.741 1.740 1.738 1.737 1.735
30.500 1.733 1.732 1.730 1.729 1.727
30.625 1.726 1.724 1.723 1.721 1.720
30.750 1.719 1.717 1.716 1.714 1.713
30.875 1.711 1.710 1.709 1.707 1.706
31.000 1.704 1.703 1.702 1.700 1.699
31.125 1.698 1.696 1.695 1.694 1.692
31.250 1.691 1.690 1.688 1.687 1.686
31.375 1.684 1.683 1.682 1.681 1.679
31.500 1.678 1.677 1.676 1.674 1.673
31.625 1.672 1.671 1.669 1.668 1.667
31.750 1.666 1.664 1.663 1.662 1.661
31.875 1.660 1.658 1.657 1.656 1.655
32.000 1.654 1.652 1.651 1.650 1.649
3 2.12 5 1.648 1.646 1.645 1.644 1.643
32.250 1.642 1.641 1.639 1.638 1.637
32.375 1.636 1.635 1.634 1.632 1.631
32.500 1.630 1.629 1.628 1.627 1.626
32.625 1.624 1.623 1.622 1.621 1.620
32.750 1.619 1.618 1.617 1.616 1.614
32.875 1.613 1.612 1.611 1.610 1.609
33.000 1.608 1.607 1.606 1.605 1.604
33.125 1.602 1.601 1.600 1.599 1.598
33.250 1.597 1.596 1.595 1.594 1.593
33.375 1.592 1.591 1.590 1.589 1.588
33.500 1.587 1.586 1.585 1.583 1.582
33.625 1.581 1.580 1.579 1.578 1.577
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Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 1 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
33.750 1.576 1.575 1.574 1.573 1.572
33.875 1.571 1.570 1.569 1.568 1.567
34.000 1.566 1.565 1.564 1.563 1.562
34.125 1.561 1.560 1.559 1.558 1.557
34.250 1.557 1.556 1.555 1.554 1.553
34.375 1.552 1.551 1.550 1.549 1.548
34.500 1.547 1.546 1.545 1.544 1.543
34.625 1.542 1.541 1.540 1.539 1.539
34.750 1.538 1.537 1.536 1.535 1.534
34.875 1.533 1.532 1.531 1.530 1.529
35.000 1.529 1.528 1.527 1.526 1.525
35.125 1.524 1.523 1.522 1.521 1.520
35.250 1.520 1.519 1.518 1.517 1.516
35.375 1.515 1.514 1.513 1.513 1.512
35.500 1.511 1.510 1.509 1.508 1.507
35.625 1.507 1.506 1.505 1.504 1.503
35.750 1.502 1.502 1.501 1.500 1.499
35.875 1.498 1.497 1.497 1.496 1.495
36.000 1.494 1.493 1.492 1.492 1.491
36.125 1.490 1.489 1.488 1.488 1.487
36.250 1.486 1.485 1.484 1.484 1.483
36.375 1.482 1.481 1.480 1.480 1.479
36.500 1.478 1.477 1.477 1.476 1.475
36.625 1.474 1.473 1.473 1.472 1.471
36.750 1.470 1.470 1.469 1.468 1.467
36.875 1.467 1.466 1.465 1.464 1.464
37.000 1.463 1.462 1.461 1.461 1.460
37.125 1.459 1.458 1.458 1.457 1.456
37.250 1.455 1.455 1.454 1.453 1.453
37.375 1.452 1.451 1.450 1.450 1.449
37.500 1.448 1.447 1.447 1.446 1.445
37.625 1.445 1.444 1.443 1.442 1.442
37.750 1.441 1.440 1.440 1.439 1.438
37.875 1.437 1.437 1.436 1.435 1.434
38.000 1.434 1.433 1.432 1.432 1.431
38.125 1.430 1.429 1.429 1.428 1.427
38.250 1.427 1.426 1.425 1.424 1.424
38.375 1.423 1.422 1.422 1.421 1.420
38.500 1.419 1.419 1.418 1.417 1.417
38.625 1.416 1.415 1.414 1.414 1.413
38.750 1.412 1.412 1.411 1.410 1.409
38.875 1.409 1.408 1.407 1.407 1.406
39.000 1.405 1.404 1.404 1.403 1.402
39.125 1.402 1.401 1.400 1.399 1.399
39.250 1.398 1.397 1.397 1.396 1.395
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122

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 1 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
39.375 1.395 1.394 1.393 1.392 1.392
39.500 1.391 1.390 1.390 1.389 1.388
39.625 1.388 1.387 1.386 1.385 1.385
39.750 1.384 1.383 1.383 1.382 1.381
39.875 1.380 1.380 1.379 1.378 1.378
40.000 1.377 1.376 1.376 1.375 1.374
40.125 1.374 1.373 1.372 1.371 1.371
40.250 1.370 1.369 1.369 1.368 1.367
40.375 1.367 1.366 1.365 1.364 1.364
40.500 1.363 1.362 1.362 1.361 1.360
40.625 1.360 1.359 1.358 1.358 1.357
40.750 1.356 1.355 1.355 1.354 1.353
40.875 1.353 1.352 1.351 1.351 1.350
41.000 1.349 1.349 1.348 1.347 1.346
41.125 1.346 1.345 1.344 1.344 1.343
41.250 1.342 1.342 1.341 1.340 1.340
41.375 1.339 1.338 1.338 1.337 1.336
41.500 1.335 1.335 1.334 1.333 1.333
41.625 1.332 1.331 1.331 1.330 1.329
41.750 1.329 1.328 1.327 1.327 1.326
41.875 1.325 1.325 1.324 1.323 1.323
42.000 1.322 1.321 1.320 1.320 1.319
42.125 1.318 1.318 1.317 1.316 1.316
42.250 1.315 1.314 1.314 1.313 1.312
42.375 1.312 1.311 1.310 1.310 1.309
42.500 1.308 1.308 1.307 1.306 1.306
42.625 1.305 1.304 1.304 1.303 1.302
42.750 1.302 1.301 1.300 1.300 1.299
42.875 1.298 1.298 1.297 1.296 1.296
43.000 1.295 1.294 1.294 1.293 1.292
43.125 1.292 1.291 1.290 1.289 1.289
43.250 1.288 1.287 1.287 1.286 1.285
43.375 1.285 1.284 1.283 1.283 1.282
43.500 1.281 1.281 1.280 1.279 1.279
43.625 1.278 1.278 1.277 1.276 1.276
43.750 1.275 1.274 1.274 1.273 1.272
43.875 1.272 1.271 1.270 1.270 1.269
44.000 1.268 1.268 1.267 1.266 1.266
44.125 1.265 1.264 1.264 1.263 1.262
44.250 1.262 1.261 1.260 1.260 1.259
44.375 1.258 1.258 1.257 1.256 1.256
44.500 1.255 1.254 1.254 1.253 1.252
44.625 1.252 1.251 1.251 1.250 1.249
44.750 1.249 1.248 1.247 1.247 1.246
44.875 1.245 1.245 1.244 1.243 1.243
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123

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 1 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
45.000 1.242 1.241 1.241 1.240 1.239
45.125 1.239 1.238 1.237 1.237 1.236
45.250 1.236 1.235 1.234 1.234 1.233
45.375 1.232 1.232 1.231 1.230 1.230
45.500 1.229 1.228 1.228 1.227 1.226
45.625 1.226 1.225 1.225 1.224 1.223
45.750 1.223 1.222 1.221 1.221 1.220
45.875 1.219 1.219 1.218 1.217 1.217
46.000 1.216 1.216 1.215 1.214 1.214
46.125 1.213 1.212 1.212 1.211 1.210
46.250 1.210 1.209 1.209 1.208 1.207
46.375 1.207 1.206 1.205 1.205 1.204
46.500 1.203 1.203 1.202 1.201 1.201
46.625 1.200 1.200 1.199 1.198 1.198
46.750 1.197 1.196 1.196 1.195 1.195
46.875 1.194 1.193 1.193 1.192 1.191
47.000 1.191 1.190 1.189 1.189 1.188
47.125 1.188 1.187 1.186 1.186 1.185
47.250 1.184 1.184 1.183 1.183 1.182
47.375 1.181 1.181 1.180 1.179 1.179
47.500 1.178 1.178 1.177 1.176 1.176
47.625 1.175 1.174 1.174 1.173 1.172
47.750 1.172 1.171 1.171 1.170 1.169
47.875 1.169 1.168 1.167 1.167 1.166
48.000 1.166 1.165 1.164 1.164 1.163
48.125 1.162 1.162 1.161 1.161 1.160
48.250 1.159 1.159 1.158 1.158 1.157
48.375 1.156 1.156 1.155 1.154 1.154
48.500 1.153 1.153 1.152 1.151 1.151
48.625 1.150 1.149 1.149 1.148 1.148
48.750 1.147 1.146 1.146 1.145 1.145
48.875 1.144 1.143 1.143 1.142 1.141
49.000 1.141 1.140 1.140 1.139 1.138
49.125 1.138 1.137 1.137 1.136 1.135
49.250 1.135 1.134 1.134 1.133 1.132
49.375 1.132 1.131 1.130 1.130 1.129
49.500 1.129 1.128 1.127 1.127 1.126
49.625 1.126 1.125 1.124 1.124 1.123
49.750 1.123 1.122 1.121 1.121 1.120
49.875 1.120 1.119 1.118 1.118 1.117
50.000 1.116 1.116 1.115 1.115 1.114
50.125 1.113 1.113 1.112 1.112 1.111
50.250 1.110 1.110 1.109 1.109 1.108
50.375 1.107 1.107 1.106 1.106 1.105
50.500 1.104 1.104 1.103 1.103 1.102
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124

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 1 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
50.625 1.101 1.101 1.100 1.100 1.099
50.750 1.098 1.098 1.097 1.097 1.096
50.875 1.095 1.095 1.094 1.094 1.093
51.000 1.092 1.092 1.091 1.091 1.090
51.125 1.089 1.089 1.088 1.088 1.087
51.250 1.086 1.086 1.085 1.085 1.084
51.375 1.084 1.083 1.082 1.082 1.081
51.500 1.081 1.080 1.079 1.079 1.078
51.625 1.078 1.077 1.076 1.076 1.075
51.750 1.075 1.074 1.073 1.073 1.072
51.875 1.072 1.071 1.071 1.070 1.069
52.000 1.069 1.068 1.068 1.067 1.066
52.125 1.066 1.065 1.065 1.064 1.063
52.250 1.063 1.062 1.062 1.061 1.061
52.375 1.060 1.059 1.059 1.058 1.058
52.500 1.057 1.056 1.056 1.055 1.055
52.625 1.054 1.054 1.053 1.052 1.052
52.750 1.051 1.051 1.050 1.049 1.049
52.875 1.048 1.048 1.047 1.047 1.046
53.000 1.045 1.045 1.044 1.044 1.043
5 3.12 5 1.042 1.042 1.041 1.041 1.040
53.250 1.040 1.039 1.038 1.038 1.037
53.375 1.037 1.036 1.036 1.035 1.034
53.500 1.034 1.033 1.033 1.032 1.032
53.625 1.031 1.030 1.030 1.029 1.029
53.750 1.028 1.028 1.027 1.026 1.026
53.875 1.025 1.025 1.024 1.024 1.023
54.000 1.022 1.022 1.021 1.021 1.020
54.125 1.020 1.019 1.018 1.018 1.017
54.250 1.017 1.016 1.016 1.015 1.014
54.375 1.014 1.013 1.013 1.012 1.012
54.500 1.011 1.010 1.010 1.009 1.009
54.625 1.008 1.008 1.007 1.006 1.006
54.750 1.005 1.005 1.004 1.004 1.003
54.875 1.002 1.002 1.001 1.001 1.000
55.000 1.000 0.999 0.999 0.998 0.997
55.125 0.997 0.996 0.996 0.995 0.995
55.250 0.994 0.993 0.993 0.992 0.992
55.375 0.991 0.991 0.990 0.990 0.989
55.500 0.988 0.988 0.987 0.987 0.986
55.625 0.986 0.985 0.985 0.984 0.983
55.750 0.983 0.982 0.982 0.981 0.981
55.875 0.980 0.980 0.979 0.978 0.978
56.000 0.977 0.977 0.976 0.976 0.975
56.125 0.975 0.974 0.973 0.973 0.972
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125

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 1 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
56.250 0.972 0.971 0.971 0.970 0.970
56.375 0.969 0.968 0.968 0.967 0.967
56.500 0.966 0.966 0.965 0.965 0.964
56.625 0.963 0.963 0.962 0.962 0.961
56.750 0.961 0.960 0.960 0.959 0.959
56.875 0.958 0.957 0.957 0.956 0.956
57.000 0.955 0.955 0.954 0.954 0.953
57.125 0.953 0.952 0.951 0.951 0.950
57.250 0.950 0.949 0.949 0.948 0.948
57.375 0.947 0.947 0.946 0.945 0.945
57.500 0.944 0.944 0.943 0.943 0.942
57.625 0.942 0.941 0.941 0.940 0.939
57.750 0.939 0.938 0.938 0.937 0.937
57.875 0.936 0.936 0.935 0.935 0.934
58.000 0.934 0.933 0.932 0.932 0.931
58.125 0.931 0.930 0.930 0.929 0.929
58.250 0.928 0.928 0.927 0.927 0.926
58.375 0.925 0.925 0.924 0.924 0.923
58.500 0.923 0.922 0.922 0.921 0.921
58.625 0.920 0.920 0.919 0.919 0.918
58.750 0.917 0.917 0.916 0.916 0.915
58.875 0.915 0.914 0.914 0.913 0.913
59.000 0.912 0.912 0.911 0.911 0.910
59.125 0.909 0.909 0.908 0.908 0.907
59.250 0.907 0.906 0.906 0.905 0.905
59.375 0.904 0.904 0.903 0.903 0.902
59.500 0.902 0.901 0.900 0.900 0.899
59.625 0.899 0.898 0.898 0.897 0.897
59.750 0.896 0.896 0.895 0.895 0.894
59.875 0.894 0.893 0.893 0.892 0.892
60.000 0.891 0.890 0.890 0.889 0.889
60.125 0.888 0.888 0.887 0.887 0.886
60.250 0.886 0.885 0.885 0.884 0.884
60.375 0.883 0.883 0.882 0.882 0.881
60.500 0.881 0.880 0.880 0.879 0.878
60.625 0.878 0.877 0.877 0.876 0.876
60.750 0.875 0.875 0.874 0.874 0.873
60.875 0.873 0.872 0.872 0.871 0.871
61.000 0.870 0.870 0.869 0.869 0.868
61.125 0.868 0.867 0.867 0.866 0.866
61.250 0.865 0.865 0.864 0.863 0.863
61.375 0.862 0.862 0.861 0.861 0.860
61.500 0.860 0.859 0.859 0.858 0.858
61.625 0.857 0.857 0.856 0.856 0.855
61.750 0.855 0.854 0.854 0.853 0.853
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126

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 1 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
61.875 0.852 0.852 0.851 0.851 0.850
62.000 0.850 0.849 0.849 0.848 0.848
62.125 0.847 0.847 0.846 0.846 0.845
62.250 0.845 0.844 0.844 0.843 0.843
62.375 0.842 0.842 0.841 0.841 0.840
62.500 0.840 0.839 0.839 0.838 0.838
62.625 0.837 0.837 0.836 0.836 0.835
62.750 0.835 0.834 0.833 0.833 0.832
62.875 0.832 0.831 0.831 0.830 0.830
63.000 0.829 0.829 0.828 0.828 0.827
63.125 0.827 0.826 0.826 0.825 0.825
63.250 0.824 0.824 0.823 0.823 0.822
63.375 0.822 0.821 0.821 0.820 0.820
63.500 0.819 0.819 0.818 0.818 0.817
63.625 0.817 0.816 0.816 0.815 0.815
63.750 0.815 0.814 0.814 0.813 0.813
63.875 0.812 0.812 0.811 0.811 0.810
64.000 0.810 0.809 0.809 0.808 0.808
64.125 0.807 0.807 0.806 0.806 0.805
64.250 0.805 0.804 0.804 0.803 0.803
64.375 0.802 0.802 0.801 0.801 0.800
64.500 0.800 0.799 0.799 0.798 0.798
64.625 0.797 0.797 0.796 0.796 0.795
64.750 0.795 0.794 0.794 0.793 0.793
64.875 0.792 0.792 0.792 0.791 0.791
65.000 0.790 0.790 0.789 0.789 0.788
65.125 0.788 0.787 0.787 0.786 0.786
65.250 0.785 0.785 0.784 0.784 0.783
65.375 0.783 0.782 0.782 0.781 0.781
65.500 0.781 0.780 0.780 0.779 0.779
65.625 0.778 0.778 0.777 0.777 0.776
65.750 0.776 0.775 0.775 0.774 0.774
65.875 0.773 0.773 0.772 0.772 0.772
66.000 0.771 0.771 0.770 0.770 0.769
66.125 0.769 0.768 0.768 0.767 0.767
66.250 0.766 0.766 0.765 0.765 0.765
66.375 0.764 0.764 0.763 0.763 0.762
66.500 0.762 0.761 0.761 0.760 0.760
66.625 0.759 0.759 0.758 0.758 0.758
66.750 0.757 0.757 0.756 0.756 0.755
66.875 0.755 0.754 0.754 0.753 0.753
67.000 0.752 0.752 0.752 0.751 0.751
67.125 0.750 0.750 0.749 0.749 0.748
67.250 0.748 0.747 0.747 0.747 0.746
67.375 0.746 0.745 0.745 0.744 0.744
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127

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 1 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
67.500 0.743 0.743 0.742 0.742 0.742
67.625 0.741 0.741 0.740 0.740 0.739
67.750 0.739 0.738 0.738 0.738 0.737
67.875 0.737 0.736 0.736 0.735 0.735
68.000 0.734 0.734 0.733 0.733 0.733
68.125 0.732 0.732 0.731 0.731 0.730
68.250 0.730 0.729 0.729 0.729 0.728
68.375 0.728 0.727 0.727 0.726 0.726
68.500 0.725 0.725 0.725 0.724 0.724
68.625 0.723 0.723 0.722 0.722 0.722
68.750 0.721 0.721 0.720 0.720 0.719
68.875 0.719 0.718 0.718 0.718 0.717
69.000 0.717 0.716 0.716 0.715 0.715
69.125 0.715 0.714 0.714 0.713 0.713
69.250 0.712 0.712 0.711 0.711 0.711
69.375 0.710 0.710 0.709 0.709 0.708
69.500 0.708 0.708 0.707 0.707 0.706
69.625 0.706 0.705 0.705 0.705 0.704
69.750 0.704 0.703 0.703 0.702 0.702
69.875 0.702 0.701 0.701 0.700 0.700
70.000 0.699 0.699 0.699 0.698 0.698
70.125 0.697 0.697 0.696 0.696 0.696
70.250 0.695 0.695 0.694 0.694 0.694
70.375 0.693 0.693 0.692 0.692 0.691
70.500 0.691 0.691 0.690 0.690 0.689
70.625 0.689 0.688 0.688 0.688 0.687
70.750 0.687 0.686 0.686 0.686 0.685
70.875 0.685 0.684 0.684 0.683 0.683
71.000 0.683 0.682 0.682 0.681 0.681
71.125 0.681 0.680 0.680 0.679 0.679
71.250 0.678 0.678 0.678 0.677 0.677
71.375 0.676 0.676 0.676 0.675 0.675
71.500 0.674 0.674 0.674 0.673 0.673
71.625 0.672 0.672 0.671 0.671 0.671
71.750 0.670 0.670 0.669 0.669 0.669
71.875 0.668 0.668 0.667 0.667 0.667
72.000 0.666 (N/A) (N/A) (N/A) (N/A)
20155-Pondpack Model.ppc
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128

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 2 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
0.000 0.000 0.000 0.000 0.000 0.000
0.125 0.000 0.000 0.000 0.000 0.000
0.250 0.000 0.000 0.000 0.000 0.000
0.375 0.000 0.000 0.000 0.000 0.000
0.500 0.000 0.000 0.000 0.000 0.000
0.625 0.000 0.000 0.000 0.000 0.000
0.750 0.000 0.000 0.000 0.000 0.000
0.875 0.000 0.000 0.000 0.000 0.000
1.000 0.000 0.000 0.000 0.000 0.000
1.125 0.000 0.000 0.000 0.000 0.000
1.250 0.000 0.000 0.000 0.000 0.000
1.375 0.000 0.000 0.000 0.000 0.000
1.500 0.000 0.000 0.000 0.000 0.000
1.625 0.000 0.000 0.000 0.000 0.000
1.750 0.000 0.000 0.000 0.000 0.000
1.875 0.000 0.000 0.000 0.000 0.000
2.000 0.000 0.000 0.000 0.000 0.000
2.125 0.000 0.000 0.000 0.000 0.000
2.250 0.000 0.000 0.000 0.000 0.000
2.375 0.000 0.000 0.000 0.000 0.000
2.500 0.000 0.000 0.000 0.000 0.000
2.625 0.000 0.000 0.000 0.000 0.000
2.750 0.000 0.000 0.000 0.000 0.000
2.875 0.000 0.000 0.000 0.000 0.000
3.000 0.000 0.000 0.000 0.000 0.000
3.125 0.000 0.000 0.000 0.000 0.000
3.250 0.000 0.000 0.000 0.000 0.000
3.375 0.000 0.000 0.000 0.000 0.000
3.500 0.000 0.000 0.000 0.000 0.000
3.625 0.000 0.000 0.000 0.000 0.000
3.750 0.000 0.000 0.000 0.000 0.000
3.875 0.000 0.000 0.000 0.000 0.000
4.000 0.000 0.000 0.000 0.000 0.000
4.125 0.000 0.000 0.000 0.000 0.000
4.250 0.000 0.000 0.000 0.000 0.000
4.375 0.000 0.000 0.000 0.000 0.000
4.500 0.000 0.000 0.000 0.000 0.000
4.625 0.000 0.000 0.000 0.000 0.000
4.750 0.000 0.000 0.000 0.000 0.000
4.875 0.000 0.000 0.000 0.000 0.000
5.000 0.000 0.000 0.000 0.000 0.000
5.125 0.000 0.000 0.000 0.000 0.000
5.250 0.000 0.000 0.000 0.000 0.000
5.375 0.000 0.000 0.000 0.000 0.000
5.500 0.000 0.000 0.000 0.000 0.000
20155-Pondpack Model.ppc
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129

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 2 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
5.625 0.000 0.000 0.000 0.000 0.000
5.750 0.000 0.000 0.000 0.000 0.000
5.875 0.000 0.000 0.000 0.000 0.000
6.000 0.000 0.000 0.000 0.000 0.000
6.125 0.000 0.000 0.000 0.000 0.000
6.250 0.000 0.000 0.000 0.000 0.000
6.375 0.000 0.000 0.000 0.000 0.000
6.500 0.000 0.000 0.000 0.000 0.000
6.625 0.000 0.000 0.000 0.000 0.000
6.750 0.000 0.001 0.001 0.001 0.001
6.875 0.001 0.001 0.001 0.001 0.001
7.000 0.001 0.001 0.001 0.001 0.002
7.125 0.002 0.002 0.002 0.002 0.002
7.250 0.002 0.002 0.003 0.003 0.003
7.375 0.003 0.003 0.003 0.003 0.004
7.500 0.004 0.004 0.004 0.004 0.004
7.625 0.005 0.005 0.005 0.005 0.005
7.750 0.006 0.006 0.006 0.006 0.006
7.875 0.007 0.007 0.007 0.007 0.008
8.000 0.008 0.008 0.008 0.009 0.009
8.125 0.009 0.009 0.010 0.010 0.010
8.250 0.011 0.011 0.011 0.012 0.012
8.375 0.012 0.012 0.013 0.013 0.014
8.500 0.014 0.014 0.015 0.015 0.015
8.625 0.016 0.016 0.017 0.017 0.018
8.750 0.018 0.019 0.019 0.020 0.020
8.875 0.021 0.021 0.022 0.022 0.023
9.000 0.023 0.024 0.024 0.025 0.026
9.125 0.026 0.027 0.028 0.028 0.029
9.250 0.029 0.030 0.031 0.031 0.032
9.375 0.033 0.034 0.034 0.035 0.036
9.500 0.036 0.037 0.038 0.039 0.039
9.625 0.040 0.041 0.042 0.043 0.043
9.750 0.044 0.045 0.046 0.047 0.048
9.875 0.049 0.050 0.051 0.052 0.053
10.000 0.054 0.055 0.056 0.057 0.058
10.125 0.059 0.060 0.062 0.063 0.064
10.250 0.066 0.067 0.068 0.070 0.071
10.375 0.072 0.074 0.075 0.077 0.079
10.500 0.080 0.082 0.083 0.085 0.087
10.625 0.089 0.091 0.092 0.094 0.096
10.750 0.098 0.101 0.103 0.105 0.107
10.875 0.109 0.112 0.114 0.117 0.119
11.000 0.122 0.125 0.127 0.130 0.133
11.125 0.136 0.139 0.142 0.146 0.149
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130

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 2 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
11.250 0.153 0.157 0.161 0.165 0.169
11.375 0.173 0.177 0.181 0.185 0.189
11.500 0.194 0.198 0.204 0.211 0.220
11.625 0.229 0.242 0.258 0.276 0.297
11.750 0.322 0.351 0.385 0.422 0.467
11.875 0.524 0.591 0.663 0.731 0.785
12.000 0.822 0.846 0.855 0.847 0.829
12.125 0.810 0.792 0.776 0.763 0.752
12.250 0.744 0.737 0.731 0.726 0.722
12.375 0.719 0.714 0.710 0.705 0.700
12.500 0.694 0.688 0.682 0.676 0.669
12.625 0.663 0.656 0.650 0.643 0.637
12.750 0.630 0.624 0.617 0.610 0.604
12.875 0.597 0.591 0.584 0.578 0.572
13.000 0.565 0.559 0.553 0.547 0.540
13.125 0.534 0.528 0.523 0.517 0.511
13.250 0.505 0.500 0.494 0.489 0.484
13.375 0.478 0.473 0.468 0.463 0.458
13.500 0.453 0.448 0.443 0.439 0.434
13.625 0.430 0.425 0.421 0.417 0.413
13.750 0.409 0.405 0.401 0.397 0.394
13.875 0.390 0.386 0.383 0.379 0.376
14.000 0.373 0.370 0.366 0.363 0.360
14.125 0.357 0.354 0.351 0.349 0.346
14.250 0.343 0.341 0.338 0.336 0.334
14.375 0.331 0.329 0.327 0.325 0.323
14.500 0.321 0.319 0.317 0.315 0.313
14.625 0.311 0.310 0.308 0.306 0.305
14.750 0.303 0.302 0.300 0.299 0.297
14.875 0.296 0.294 0.293 0.292 0.290
15.000 0.289 0.288 0.287 0.286 0.284
15.125 0.283 0.282 0.281 0.280 0.279
15.250 0.278 0.277 0.276 0.275 0.274
15.375 0.273 0.272 0.271 0.270 0.269
15.500 0.269 0.268 0.267 0.266 0.265
15.625 0.265 0.264 0.263 0.262 0.262
15.750 0.261 0.260 0.259 0.259 0.258
15.875 0.257 0.257 0.256 0.255 0.255
16.000 0.254 0.253 0.253 0.252 0.251
16.125 0.251 0.250 0.250 0.249 0.249
16.250 0.248 0.247 0.247 0.246 0.246
16.375 0.245 0.245 0.244 0.244 0.244
16.500 0.243 0.243 0.242 0.242 0.241
16.625 0.241 0.240 0.240 0.240 0.239
16.750 0.239 0.238 0.238 0.238 0.237
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131

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 2 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
16.875 0.237 0.237 0.236 0.236 0.235
17.000 0.235 0.235 0.234 0.234 0.234
17.125 0.233 0.233 0.233 0.232 0.232
17.250 0.232 0.231 0.231 0.231 0.231
17.375 0.230 0.230 0.230 0.229 0.229
17.500 0.229 0.229 0.228 0.228 0.228
17.625 0.227 0.227 0.227 0.227 0.226
17.750 0.226 0.226 0.225 0.225 0.225
17.875 0.225 0.224 0.224 0.224 0.224
18.000 0.223 0.223 0.223 0.223 0.222
18.125 0.222 0.222 0.222 0.221 0.221
18.250 0.221 0.221 0.221 0.220 0.220
18.375 0.220 0.220 0.219 0.219 0.219
18.500 0.219 0.218 0.218 0.218 0.218
18.625 0.218 0.217 0.217 0.217 0.217
18.750 0.216 0.216 0.216 0.216 0.216
18.875 0.215 0.215 0.215 0.215 0.214
19.000 0.214 0.214 0.214 0.214 0.213
19.125 0.213 0.213 0.213 0.213 0.212
19.250 0.212 0.212 0.212 0.211 0.211
19.375 0.211 0.211 0.211 0.210 0.210
19.500 0.210 0.210 0.210 0.209 0.209
19.625 0.209 0.209 0.209 0.208 0.208
19.750 0.208 0.208 0.208 0.207 0.207
19.875 0.207 0.207 0.207 0.206 0.206
20.000 0.206 0.206 0.205 0.205 0.205
20.125 0.205 0.205 0.205 0.204 0.204
20.250 0.204 0.204 0.204 0.203 0.203
20.375 0.203 0.203 0.203 0.203 0.203
20.500 0.202 0.202 0.202 0.202 0.202
20.625 0.202 0.202 0.201 0.201 0.201
20.750 0.201 0.201 0.201 0.201 0.201
20.875 0.200 0.200 0.200 0.200 0.200
21.000 0.200 0.200 0.200 0.200 0.200
21.125 0.199 0.199 0.199 0.199 0.199
21.250 0.199 0.199 0.199 0.199 0.199
21.375 0.199 0.198 0.198 0.198 0.198
21.500 0.198 0.198 0.198 0.198 0.198
21.625 0.198 0.198 0.198 0.198 0.197
21.750 0.197 0.197 0.197 0.197 0.197
21.875 0.197 0.197 0.197 0.197 0.197
22.000 0.197 0.197 0.197 0.197 0.197
22.125 0.196 0.196 0.196 0.196 0.196
22.250 0.196 0.196 0.196 0.196 0.196
22.375 0.196 0.196 0.196 0.196 0.196
20155-Pondpack Model.ppc
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132

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 2 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
22.500 0.196 0.196 0.196 0.195 0.195
22.625 0.195 0.195 0.195 0.195 0.195
22.750 0.195 0.195 0.195 0.195 0.195
22.875 0.195 0.195 0.195 0.195 0.195
23.000 0.195 0.195 0.195 0.194 0.194
23.125 0.194 0.194 0.194 0.194 0.194
23.250 0.194 0.194 0.194 0.194 0.194
23.375 0.194 0.194 0.194 0.194 0.194
23.500 0.194 0.194 0.194 0.194 0.194
23.625 0.193 0.193 0.193 0.193 0.193
23.750 0.193 0.193 0.193 0.193 0.193
23.875 0.193 0.193 0.193 0.193 0.193
24.000 0.193 0.193 0.193 0.192 0.191
24.125 0.191 0.190 0.189 0.188 0.187
24.250 0.187 0.186 0.185 0.184 0.184
24.375 0.183 0.182 0.182 0.181 0.180
24.500 0.180 0.179 0.179 0.178 0.178
24.625 0.177 0.177 0.176 0.176 0.175
24.750 0.175 0.174 0.174 0.173 0.173
24.875 0.172 0.172 0.172 0.171 0.171
25.000 0.170 0.170 0.170 0.169 0.169
25.125 0.169 0.168 0.168 0.168 0.168
25.250 0.167 0.167 0.167 0.166 0.166
25.375 0.166 0.166 0.165 0.165 0.165
25.500 0.165 0.164 0.164 0.164 0.164
25.625 0.164 0.163 0.163 0.163 0.163
25.750 0.163 0.163 0.162 0.162 0.162
25.875 0.162 0.162 0.162 0.161 0.161
26.000 0.161 0.161 0.161 0.161 0.161
26.125 0.161 0.160 0.160 0.160 0.160
26.250 0.160 0.160 0.160 0.160 0.160
26.375 0.159 0.159 0.159 0.159 0.159
26.500 0.159 0.159 0.159 0.159 0.159
26.625 0.159 0.159 0.158 0.158 0.158
26.750 0.158 0.158 0.158 0.158 0.158
26.875 0.158 0.158 0.158 0.158 0.157
27.000 0.157 0.157 0.157 0.157 0.157
27.125 0.157 0.157 0.157 0.157 0.157
27.250 0.156 0.156 0.156 0.156 0.156
27.375 0.156 0.156 0.156 0.156 0.156
27.500 0.156 0.156 0.155 0.155 0.155
27.625 0.155 0.155 0.155 0.155 0.155
27.750 0.155 0.155 0.155 0.155 0.154
27.875 0.154 0.154 0.154 0.154 0.154
28.000 0.154 0.154 0.154 0.154 0.154
20155-Pondpack Model.ppc
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133

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 2 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
28.125 0.154 0.153 0.153 0.153 0.153
28.250 0.153 0.153 0.153 0.153 0.153
28.375 0.153 0.153 0.153 0.152 0.152
28.500 0.152 0.152 0.152 0.152 0.152
28.625 0.152 0.152 0.152 0.152 0.151
28.750 0.151 0.151 0.151 0.151 0.151
28.875 0.151 0.151 0.151 0.151 0.151
29.000 0.151 0.150 0.150 0.150 0.150
29.125 0.150 0.150 0.150 0.150 0.150
29.250 0.150 0.150 0.150 0.149 0.149
29.375 0.149 0.149 0.149 0.149 0.149
29.500 0.149 0.149 0.149 0.149 0.149
29.625 0.148 0.148 0.148 0.148 0.148
29.750 0.148 0.148 0.148 0.148 0.148
29.875 0.148 0.148 0.147 0.147 0.147
30.000 0.147 0.147 0.147 0.147 0.147
30.125 0.147 0.147 0.147 0.147 0.146
30.250 0.146 0.146 0.146 0.146 0.146
30.375 0.146 0.146 0.146 0.146 0.146
30.500 0.146 0.145 0.145 0.145 0.145
30.625 0.145 0.145 0.145 0.145 0.145
30.750 0.145 0.145 0.145 0.144 0.144
30.875 0.144 0.144 0.144 0.144 0.144
31.000 0.144 0.144 0.144 0.144 0.144
31.125 0.143 0.143 0.143 0.143 0.143
31.250 0.143 0.143 0.143 0.143 0.143
31.375 0.143 0.143 0.142 0.142 0.142
31.500 0.142 0.142 0.142 0.142 0.142
31.625 0.142 0.142 0.142 0.142 0.141
31.750 0.141 0.141 0.141 0.141 0.141
31.875 0.141 0.141 0.141 0.141 0.141
32.000 0.141 0.140 0.140 0.140 0.140
32.125 0.140 0.140 0.140 0.140 0.140
32.250 0.140 0.140 0.140 0.139 0.139
32.375 0.139 0.139 0.139 0.139 0.139
32.500 0.139 0.139 0.139 0.139 0.139
32.625 0.138 0.138 0.138 0.138 0.138
32.750 0.138 0.138 0.138 0.138 0.138
32.875 0.138 0.138 0.137 0.137 0.137
33.000 0.137 0.137 0.137 0.137 0.137
33.125 0.137 0.137 0.137 0.137 0.136
33.250 0.136 0.136 0.136 0.136 0.136
33.375 0.136 0.136 0.136 0.136 0.136
33.500 0.136 0.135 0.135 0.135 0.135
33.625 0.135 0.135 0.135 0.135 0.135
20155-Pondpack Model.ppc
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134

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 2 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
33.750 0.135 0.135 0.135 0.134 0.134
33.875 0.134 0.134 0.134 0.134 0.134
34.000 0.134 0.134 0.134 0.134 0.134
34.125 0.133 0.133 0.133 0.133 0.133
34.250 0.133 0.133 0.133 0.133 0.133
34.375 0.133 0.133 0.133 0.132 0.132
34.500 0.132 0.132 0.132 0.132 0.132
34.625 0.132 0.132 0.132 0.132 0.132
34.750 0.131 0.131 0.131 0.131 0.131
34.875 0.131 0.131 0.131 0.131 0.131
35.000 0.131 0.131 0.130 0.130 0.130
35.125 0.130 0.130 0.130 0.130 0.130
35.250 0.130 0.130 0.130 0.130 0.129
35.375 0.129 0.129 0.129 0.129 0.129
35.500 0.129 0.129 0.129 0.129 0.129
35.625 0.129 0.129 0.128 0.128 0.128
35.750 0.128 0.128 0.128 0.128 0.128
35.875 0.128 0.128 0.128 0.128 0.127
36.000 0.127 0.127 0.127 0.127 0.127
36.125 0.127 0.127 0.127 0.127 0.127
36.250 0.127 0.126 0.126 0.126 0.126
36.375 0.126 0.126 0.126 0.126 0.126
36.500 0.126 0.126 0.126 0.126 0.125
36.625 0.125 0.125 0.125 0.125 0.125
36.750 0.125 0.125 0.125 0.125 0.125
36.875 0.125 0.124 0.124 0.124 0.124
37.000 0.124 0.124 0.124 0.124 0.124
37.125 0.124 0.124 0.124 0.123 0.123
37.250 0.123 0.123 0.123 0.123 0.123
37.375 0.123 0.123 0.123 0.123 0.123
37.500 0.123 0.122 0.122 0.122 0.122
37.625 0.122 0.122 0.122 0.122 0.122
37.750 0.122 0.122 0.122 0.121 0.121
37.875 0.121 0.121 0.121 0.121 0.121
38.000 0.121 0.121 0.121 0.121 0.121
38.125 0.121 0.120 0.120 0.120 0.120
38.250 0.120 0.120 0.120 0.120 0.120
38.375 0.120 0.120 0.120 0.119 0.119
38.500 0.119 0.119 0.119 0.119 0.119
38.625 0.119 0.119 0.119 0.119 0.119
38.750 0.119 0.118 0.118 0.118 0.118
38.875 0.118 0.118 0.118 0.118 0.118
39.000 0.118 0.118 0.118 0.117 0.117
39.125 0.117 0.117 0.117 0.117 0.117
39.250 0.117 0.117 0.117 0.117 0.117
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
135

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 2 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
39.375 0.116 0.116 0.116 0.116 0.116
39.500 0.116 0.116 0.116 0.116 0.116
39.625 0.116 0.116 0.116 0.115 0.115
39.750 0.115 0.115 0.115 0.115 0.115
39.875 0.115 0.115 0.115 0.115 0.115
40.000 0.114 0.114 0.114 0.114 0.114
40.125 0.114 0.114 0.114 0.114 0.114
40.250 0.114 0.114 0.114 0.113 0.113
40.375 0.113 0.113 0.113 0.113 0.113
40.500 0.113 0.113 0.113 0.113 0.113
40.625 0.113 0.112 0.112 0.112 0.112
40.750 0.112 0.112 0.112 0.112 0.112
40.875 0.112 0.112 0.112 0.111 0.111
41.000 0.111 0.111 0.111 0.111 0.111
41.125 0.111 0.111 0.111 0.111 0.111
41.250 0.111 0.110 0.110 0.110 0.110
41.375 0.110 0.110 0.110 0.110 0.110
41.500 0.110 0.110 0.110 0.110 0.109
41.625 0.109 0.109 0.109 0.109 0.109
41.750 0.109 0.109 0.109 0.109 0.109
41.875 0.109 0.108 0.108 0.108 0.108
42.000 0.108 0.108 0.108 0.108 0.108
42.125 0.108 0.108 0.108 0.108 0.107
42.250 0.107 0.107 0.107 0.107 0.107
42.375 0.107 0.107 0.107 0.107 0.107
42.500 0.107 0.106 0.106 0.106 0.106
42.625 0.106 0.106 0.106 0.106 0.106
42.750 0.106 0.106 0.106 0.106 0.105
42.875 0.105 0.105 0.105 0.105 0.105
43.000 0.105 0.105 0.105 0.105 0.105
43.125 0.105 0.105 0.104 0.104 0.104
43.250 0.104 0.104 0.104 0.104 0.104
43.375 0.104 0.104 0.104 0.104 0.104
43.500 0.103 0.103 0.103 0.103 0.103
43.625 0.103 0.103 0.103 0.103 0.103
43.750 0.103 0.103 0.103 0.102 0.102
43.875 0.102 0.102 0.102 0.102 0.102
44.000 0.102 0.102 0.102 0.102 0.102
44.125 0.101 0.101 0.101 0.101 0.101
44.250 0.101 0.101 0.101 0.101 0.101
44.375 0.101 0.101 0.101 0.100 0.100
44.500 0.100 0.100 0.100 0.100 0.100
44.625 0.100 0.100 0.100 0.100 0.100
44.750 0.100 0.099 0.099 0.099 0.099
44.875 0.099 0.099 0.099 0.099 0.099
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
136

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 2 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
45.000 0.099 0.099 0.099 0.099 0.098
45.125 0.098 0.098 0.098 0.098 0.098
45.250 0.098 0.098 0.098 0.098 0.098
45.375 0.098 0.098 0.097 0.097 0.097
45.500 0.097 0.097 0.097 0.097 0.097
45.625 0.097 0.097 0.097 0.097 0.097
45.750 0.096 0.096 0.096 0.096 0.096
45.875 0.096 0.096 0.096 0.096 0.096
46.000 0.096 0.096 0.096 0.095 0.095
46.125 0.095 0.095 0.095 0.095 0.095
46.250 0.095 0.095 0.095 0.095 0.095
46.375 0.095 0.094 0.094 0.094 0.094
46.500 0.094 0.094 0.094 0.094 0.094
46.625 0.094 0.094 0.094 0.094 0.093
46.750 0.093 0.093 0.093 0.093 0.093
46.875 0.093 0.093 0.093 0.093 0.093
47.000 0.093 0.093 0.092 0.092 0.092
47.125 0.092 0.092 0.092 0.092 0.092
47.250 0.092 0.092 0.092 0.092 0.092
47.375 0.091 0.091 0.091 0.091 0.091
47.500 0.091 0.091 0.091 0.091 0.091
47.625 0.091 0.091 0.091 0.090 0.090
47.750 0.090 0.090 0.090 0.090 0.090
47.875 0.090 0.090 0.090 0.090 0.090
48.000 0.090 0.089 0.089 0.089 0.089
48.125 0.089 0.089 0.089 0.089 0.089
48.250 0.089 0.089 0.089 0.089 0.088
48.375 0.088 0.088 0.088 0.088 0.088
48.500 0.088 0.088 0.088 0.088 0.088
48.625 0.088 0.088 0.087 0.087 0.087
48.750 0.087 0.087 0.087 0.087 0.087
48.875 0.087 0.087 0.087 0.087 0.087
49.000 0.086 0.086 0.086 0.086 0.086
49.125 0.086 0.086 0.086 0.086 0.086
49.250 0.086 0.086 0.086 0.085 0.085
49.375 0.085 0.085 0.085 0.085 0.085
49.500 0.085 0.085 0.085 0.085 0.085
49.625 0.085 0.085 0.084 0.084 0.084
49.750 0.084 0.084 0.084 0.084 0.084
49.875 0.084 0.084 0.084 0.084 0.084
50.000 0.083 0.083 0.083 0.083 0.083
50.125 0.083 0.083 0.083 0.083 0.083
50.250 0.083 0.083 0.083 0.082 0.082
50.375 0.082 0.082 0.082 0.082 0.082
50.500 0.082 0.082 0.082 0.082 0.082
20155-Pondpack Model.ppc
8/16/2023 The Isaacs Group
137

Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 2 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
50.625 0.082 0.081 0.081 0.081 0.081
50.750 0.081 0.081 0.081 0.081 0.081
50.875 0.081 0.081 0.081 0.081 0.081
51.000 0.080 0.080 0.080 0.080 0.080
51.125 0.080 0.080 0.080 0.080 0.080
51.250 0.080 0.080 0.080 0.079 0.079
51.375 0.079 0.079 0.079 0.079 0.079
51.500 0.079 0.079 0.079 0.079 0.079
51.625 0.079 0.078 0.078 0.078 0.078
51.750 0.078 0.078 0.078 0.078 0.078
51.875 0.078 0.078 0.078 0.078 0.078
52.000 0.077 0.077 0.077 0.077 0.077
52.125 0.077 0.077 0.077 0.077 0.077
52.250 0.077 0.077 0.077 0.076 0.076
52.375 0.076 0.076 0.076 0.076 0.076
52.500 0.076 0.076 0.076 0.076 0.076
52.625 0.076 0.075 0.075 0.075 0.075
52.750 0.075 0.075 0.075 0.075 0.075
52.875 0.075 0.075 0.075 0.075 0.075
53.000 0.074 0.074 0.074 0.074 0.074
53.125 0.074 0.074 0.074 0.074 0.074
53.250 0.074 0.074 0.074 0.073 0.073
53.375 0.073 0.073 0.073 0.073 0.073
53.500 0.073 0.073 0.073 0.073 0.073
53.625 0.073 0.073 0.072 0.072 0.072
53.750 0.072 0.072 0.072 0.072 0.072
53.875 0.072 0.072 0.072 0.072 0.072
54.000 0.071 0.071 0.071 0.071 0.071
54.125 0.071 0.071 0.071 0.071 0.071
54.250 0.071 0.071 0.071 0.071 0.070
54.375 0.070 0.070 0.070 0.070 0.070
54.500 0.070 0.070 0.070 0.070 0.070
54.625 0.070 0.070 0.069 0.069 0.069
54.750 0.069 0.069 0.069 0.069 0.069
54.875 0.069 0.069 0.069 0.069 0.069
55.000 0.069 0.068 0.068 0.068 0.068
55.125 0.068 0.068 0.068 0.068 0.068
55.250 0.068 0.068 0.068 0.068 0.067
55.375 0.067 0.067 0.067 0.067 0.067
55.500 0.067 0.067 0.067 0.067 0.067
55.625 0.067 0.067 0.067 0.066 0.066
55.750 0.066 0.066 0.066 0.066 0.066
55.875 0.066 0.066 0.066 0.066 0.066
56.000 0.066 0.066 0.065 0.065 0.065
56.125 0.065 0.065 0.065 0.065 0.065
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Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 2 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
56.250 0.065 0.065 0.065 0.065 0.065
56.375 0.065 0.064 0.064 0.064 0.064
56.500 0.064 0.064 0.064 0.064 0.064
56.625 0.064 0.064 0.064 0.064 0.063
56.750 0.063 0.063 0.063 0.063 0.063
56.875 0.063 0.063 0.063 0.063 0.063
57.000 0.063 0.063 0.063 0.062 0.062
57.125 0.062 0.062 0.062 0.062 0.062
57.250 0.062 0.062 0.062 0.062 0.062
57.375 0.062 0.062 0.062 0.061 0.061
57.500 0.061 0.061 0.061 0.061 0.061
57.625 0.061 0.061 0.061 0.061 0.061
57.750 0.061 0.060 0.060 0.060 0.060
57.875 0.060 0.060 0.060 0.060 0.060
58.000 0.060 0.060 0.060 0.060 0.060
58.125 0.060 0.059 0.059 0.059 0.059
58.250 0.059 0.059 0.059 0.059 0.059
58.375 0.059 0.059 0.059 0.059 0.058
58.500 0.058 0.058 0.058 0.058 0.058
58.625 0.058 0.058 0.058 0.058 0.058
58.750 0.058 0.058 0.058 0.058 0.057
58.875 0.057 0.057 0.057 0.057 0.057
59.000 0.057 0.057 0.057 0.057 0.057
59.125 0.057 0.057 0.057 0.056 0.056
59.250 0.056 0.056 0.056 0.056 0.056
59.375 0.056 0.056 0.056 0.056 0.056
59.500 0.056 0.056 0.055 0.055 0.055
59.625 0.055 0.055 0.055 0.055 0.055
59.750 0.055 0.055 0.055 0.055 0.055
59.875 0.055 0.054 0.054 0.054 0.054
60.000 0.054 0.054 0.054 0.054 0.054
60.125 0.054 0.054 0.054 0.054 0.054
60.250 0.054 0.053 0.053 0.053 0.053
60.375 0.053 0.053 0.053 0.053 0.053
60.500 0.053 0.053 0.053 0.053 0.053
60.625 0.053 0.052 0.052 0.052 0.052
60.750 0.052 0.052 0.052 0.052 0.052
60.875 0.052 0.052 0.052 0.052 0.052
61.000 0.051 0.051 0.051 0.051 0.051
61.125 0.051 0.051 0.051 0.051 0.051
61.250 0.051 0.051 0.051 0.051 0.051
61.375 0.050 0.050 0.050 0.050 0.050
61.500 0.050 0.050 0.050 0.050 0.050
61.625 0.050 0.050 0.050 0.050 0.049
61.750 0.049 0.049 0.049 0.049 0.049
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Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 2 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
61.875 0.049 0.049 0.049 0.049 0.049
62.000 0.049 0.049 0.049 0.049 0.048
62.125 0.048 0.048 0.048 0.048 0.048
62.250 0.048 0.048 0.048 0.048 0.048
62.375 0.048 0.048 0.048 0.047 0.047
62.500 0.047 0.047 0.047 0.047 0.047
62.625 0.047 0.047 0.047 0.047 0.047
62.750 0.047 0.047 0.047 0.046 0.046
62.875 0.046 0.046 0.046 0.046 0.046
63.000 0.046 0.046 0.046 0.046 0.046
63.125 0.046 0.046 0.046 0.045 0.045
63.250 0.045 0.045 0.045 0.045 0.045
63.375 0.045 0.045 0.045 0.045 0.045
63.500 0.045 0.045 0.045 0.044 0.044
63.625 0.044 0.044 0.044 0.044 0.044
63.750 0.044 0.044 0.044 0.044 0.044
63.875 0.044 0.044 0.044 0.043 0.043
64.000 0.043 0.043 0.043 0.043 0.043
64.125 0.043 0.043 0.043 0.043 0.043
64.250 0.043 0.043 0.043 0.042 0.042
64.375 0.042 0.042 0.042 0.042 0.042
64.500 0.042 0.042 0.042 0.042 0.042
64.625 0.042 0.042 0.042 0.041 0.041
64.750 0.041 0.041 0.041 0.041 0.041
64.875 0.041 0.041 0.041 0.041 0.041
65.000 0.041 0.041 0.041 0.040 0.040
65.125 0.040 0.040 0.040 0.040 0.040
65.250 0.040 0.040 0.040 0.040 0.040
65.375 0.040 0.040 0.040 0.040 0.039
65.500 0.039 0.039 0.039 0.039 0.039
65.625 0.039 0.039 0.039 0.039 0.039
65.750 0.039 0.039 0.039 0.039 0.038
65.875 0.038 0.038 0.038 0.038 0.038
66.000 0.038 0.038 0.038 0.038 0.038
66.125 0.038 0.038 0.038 0.038 0.037
66.250 0.037 0.037 0.037 0.037 0.037
66.375 0.037 0.037 0.037 0.037 0.037
66.500 0.037 0.037 0.037 0.037 0.037
66.625 0.036 0.036 0.036 0.036 0.036
66.750 0.036 0.036 0.036 0.036 0.036
66.875 0.036 0.036 0.036 0.036 0.036
67.000 0.035 0.035 0.035 0.035 0.035
67.125 0.035 0.035 0.035 0.035 0.035
67.250 0.035 0.035 0.035 0.035 0.035
67.375 0.035 0.034 0.034 0.034 0.034
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Subsection: Time vs. Volume Return Event: 100 years
Label: BMP 2 Storm Event: SCS Type II (7.73 in)
Time vs. Volume (ac-ft)
Output Time increment = 0.025 hours
Time on left represents time for first value in each row.
Time Volume Volume Volume Volume Volume
(hours) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
67.500 0.034 0.034 0.034 0.034 0.034
67.625 0.034 0.034 0.034 0.034 0.034
67.750 0.034 0.034 0.033 0.033 0.033
67.875 0.033 0.033 0.033 0.033 0.033
68.000 0.033 0.033 0.033 0.033 0.033
68.125 0.033 0.033 0.032 0.032 0.032
68.250 0.032 0.032 0.032 0.032 0.032
68.375 0.032 0.032 0.032 0.032 0.032
68.500 0.032 0.032 0.032 0.031 0.031
68.625 0.031 0.031 0.031 0.031 0.031
68.750 0.031 0.031 0.031 0.031 0.031
68.875 0.031 0.031 0.031 0.031 0.030
69.000 0.030 0.030 0.030 0.030 0.030
69.125 0.030 0.030 0.030 0.030 0.030
69.250 0.030 0.030 0.030 0.030 0.030
69.375 0.029 0.029 0.029 0.029 0.029
69.500 0.029 0.029 0.029 0.029 0.029
69.625 0.029 0.029 0.029 0.029 0.029
69.750 0.029 0.028 0.028 0.028 0.028
69.875 0.028 0.028 0.028 0.028 0.028
70.000 0.028 0.028 0.028 0.028 0.028
70.125 0.028 0.028 0.027 0.027 0.027
70.250 0.027 0.027 0.027 0.027 0.027
70.375 0.027 0.027 0.027 0.027 0.027
70.500 0.027 0.027 0.027 0.026 0.026
70.625 0.026 0.026 0.026 0.026 0.026
70.750 0.026 0.026 0.026 0.026 0.026
70.875 0.026 0.026 0.026 0.026 0.025
71.000 0.025 0.025 0.025 0.025 0.025
71.125 0.025 0.025 0.025 0.025 0.025
71.250 0.025 0.025 0.025 0.025 0.025
71.375 0.024 0.024 0.024 0.024 0.024
71.500 0.024 0.024 0.024 0.024 0.024
71.625 0.024 0.024 0.024 0.024 0.024
71.750 0.024 0.024 0.023 0.023 0.023
71.875 0.023 0.023 0.023 0.023 0.023
72.000 0.023 (N/A) (N/A) (N/A) (N/A)
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