SW3190803_Calculations_8/22/2019

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1
Project Name
Salem Leasing Corporation
2
Project Area ac
10.725
3
Coastal Wetland Area ac
4
Surface Water Area ac
5
Is this project High or Low Density?
High
6
Does this project use an off -site SCM?
No
COMPLIANCE WITH 02H .1003(4
7
Width of vegetated setbacks provided feet
8
Will the vegetated setback remain vegetated?
9
Is BUA other that as listed in .1 0034 c-d out of the setback?
10
Is streambank stabilization proposed on this project?
No
NUMBER AND TYPE OF SCMs:
11
Infiltration System
0
12
Bioretention Cell
0
13
Wet Pond
1
14
Stormwater Wetland
0
15
Permeable Pavement
0
16
Sand Filter
0
17
Rainwater Harvesting RWH
0
18
Green Roof
0
19
Level Spreader -Filter Strip LS-FS
0
20
Disconnected Impervious Surface (DIS)
0
21
Treatment Swale
0
22
Dry Pond
0
23
StormFilter
0
24
Silva Cell
0
25
Bayfilter
0
26
Filterra
0
FORMS LOADED
DESIGNER CE TION
27
Name and Title:
Matthew Grant, CEO
28
Organization:
Jordan Grant & Associates, PLLC
29
Street address:
2351 Simonton Rd
30
City, State, Zip:
Statesville, NC 28625
31
Phone numbers :
704-928-7919
32
Email:
[e-mail]
Certification Statement:
I certify, under penalty of law that this Supplement-EZ form and all supporting information were prepared under my direction or
supervision, that the information provided in the form is, to the best of my knowledge and belief, true, accurate, and complete; and
that the engineering plans, specifications, operation and maintenance agreements and other supporting information are consistent
with the information provided here.
=0' Q�DE�SS/p';'��y
SEAL
33292
' q INE�.Q:``�
��!!!!lIII11{111\
Signature of Designer
December 3, 2018
Date

DRAINAGE AREAS
1
Is this a high density project?
Yes
2
If so, number of drainage areas/SCMs
1
3
Is all/part of this project subject to previous rule
versions?
No
FORMS LOADED
DRAINAGE AREA INFORMATION
Entire Site
1
4
Type of SCM
Wet pond
1
5
Total BUA in project (sq ft
356530 sf
356530 sf
6permitting)
New BUA on subdivided lots (subject to
s ft
7permitting)
New BUA outside of subdivided lots (subject to
s
8
JOffsite - total area (sq ft
9
Offsite BU(sq ft
10
Breakdown of new BUA outside subdivided lots:
Parking (sq ft
348812 sf
348812 sf
Sidewalk (sq ft
718 sf
718 sf
Roof (sq ft
7000 sf
7000 sf
Roadway s ft
Future (sq ft
Other, please specify in the comment box
below (sq ft
11
New infiltrating permeable pavement on
subdivided lots (sq ft
12
New infiltrating permeable pavement outside of
isubdivided lots (sq ft
13permitting)
Exisitng BUA that will remain (not subject to
s ft
14
Existing BUA that is already permitted (sq ft
15
Existing BUA that will be removed (sq ft
16
Percent BUA
70%
70%
17
Design storm inches
1 in
1 in
18
IDesign volume of SCM cu ft
9764 cf
9764 cf
19
lCalculation method for design volume
SA/DA
SA/DA
ADDITIONAL INFORMATION
20
Please use this space to provide any additional information about the
drainage area(s):

WET POND
F__11Drainaae area number
ERAL MDC FROM 02H .1050
3
Is the SCM sized to treat the SW from all surfaces at build -out?
Y-es
4
Is the SCM located away from contaminated soils?
Yes
5
What are the side slopes of the SCM (H:V)?
2:1
6
Does the SCM have retaining walls, gabion walls or other
engineered side slopes?
No
7
Are the inlets, outlets, and receiving stream protected from erosion
(10-year storm)?
Yes
8
Is there an overflow or bypass for inflow volume in excess of the
design volume?
No
9
What is the method for dewatering the SCM for maintenance?
Pump (preferred)
10
If applicable, will the SCM be cleaned out after construction?
Yes
11
Does the maintenance access comply with General MDC (8)?
Yes
12
Does the drainage easement comply with General MDC (9)?
Yes
13
If the SCM is on a single family lot, does (will?) the plat comply with
General MDC (10)?
14
Is there an O&M Agreement that complies with General MDC (11)?
Yes
151
Is there an O&M Plan that complies with General MDC (12)?
161
Does the SCM follow the device specific MDC?
Yes
17 Was the SCM designed by an NC licensed professional?
WET POND MDC FROM 02H .1053
181 Method used
Yes
SA/DA
19
Has a stage/storage table been provided in the calculations?
Yes
20
Elevation of the excavated main pool depth (bottom of sediment
removal) (fmsl)
895.00
21
Elevation of the main pool bottom -(top of sediment removal) (fmsl)
896.00
22
Elevation of the bottom of the vegetated shelf (fmsl)
899.00
23
Elevation of the permanent pool (fmsl)
898.00
24
Elevation of the top of the vegetated shelf (fmsl)
900.00
25
Elevation of the temporary pool (fmsl)
900.00
26
Surface area of the main permanent pool (square feet)
6000:1
27
Volume of the main permanent pool (cubic feet)
15102 cf
28
Average depth of the main pool (feet)
3.00 ft
29
Average depth equation used
Equation 2
301
If using equation 3, main pool perimeter (feet)
31
If using equation 3, width of submerged veg. shelf (feet)
32
Volume of the forebay (cubic feet)
3090 cf
33
Is this 15-20% of the volume in the main pool?
Yes
34
Clean -out depth for forebay (inches)
12 in
35
Design volume of SCM (cu ft)
9764 cf
36
Is the outlet an orifice or a weir?
Weir
37
If orifice, orifice diameter (inches)
2 in
38
If weir, weir height (inches)
12 in
39
If weir, weir length (inches)
144 in
40
Drawdown time for the temporary pool (days)
3.04
41
Are the inlet(s) and outlet located in a manner that avoids short-
circuiting?
Yes
42
Are berms or baffles provided to improve the flow path?
Yes
43
Depth of forebay at entrance (inches)
36 in
44
Depth of forebay at exit (inches)
24 in
45
Does water flow out of the forebay in a non -erosive manner?
Yes
46
Width of the vegetated shelf (feet)
6 ft
47
Slope of vegetated shelf (H:V)
6:1
48
Does the orifice drawdown from below the top surface of the
permanent pool?
Yes
49
Does the pond minimize impacts to the receiving channel from the 1-
yr, 24-hr storm?
Yes
50
Are fountains proposed? (If Y, please provide documentation that
MDC(9) is met.)
No
51
Is a trash rack or other device provided to protect the outlet system?
Yes
52
Are the dam and embankment planted in non -clumping turf grass?
Yes
53
Species of turf that will be used on the dam and embankment
(Festuca rubra)
54
Has a planting plan been provided for the vegetated shelf?
Yes
ADDITIONAL
INFORMATION
55
Please use this space to provide any additional information about
the wet pond(s):

Wetpond
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 1
Area Listing (all nodes)
Area CN Description
(acres) (su bcatch me nt-n u mbe rs)
8.185 80 >75% Grass cover, Good, HSG D (1 S)
0.016 98 Concrete Sidewalk, HSG D (2S)
8.008 96 Gravel surface, HSG D (2S)
0.161 98 Roofs, HSG D (2S)
16.370 88 TOTAL AREA

Wetpond
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 2
Soil Listing (all nodes)
Area Soil Subcatchment
(acres) Group Numbers
0.000
HSG A
0.000
HSG B
0.000
HSG C
16.370
HSG D 1 S, 2S
0.000
Other
16.370
TOTAL AREA

Wetpond
Prepared by {enter your company name here}
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC
Printed
2/22/2019
Page 3
Ground Covers (all
nodes)
HSG-A
HSG-B
HSG-C
HSG-D
Other
Total
Ground
Subcatchment
(acres)
(acres)
(acres)
(acres)
(acres)
(acres)
Cover
Numbers
0.000
0.000
0.000
8.185
0.000
8.185
>75% Grass cover, Good
1 S
0.000
0.000
0.000
0.016
0.000
0.016
Concrete Sidewalk
2S
0.000
0.000
0.000
8.008
0.000
8.008
Gravel surface
2S
0.000
0.000
0.000
0.161
0.000
0.161
Roofs
2S
0.000
0.000
0.000
16.370
0.000
16.370
TOTAL AREA

Wetpond NOAA 24-hr 8 1-Year Rainfall=2.84"
Prepared by {enter your company name here} Printed 2/22/2019
HvdroCAD® 10.00-21 s/n 05338 © 2018 HvdroCAD Software Solutions LLC Paae 4
Time span=0.00-20.00 hrs, dt=0.06 hrs, 334 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment1S: Pre -Development Runoff Area=356,530 sf 0.00% Imperious Runoff Depth>1.05"
Tc=5.0 min CN=80 Runoff=13.96 cfs 0.714 of
Subcatchment2S: Post -Development Runoff Area=356,530 sf 2.16% Imperious Runoff Depth>2.28"
Tc=5.0 min CN=96 Runoff=26.97 cfs 1.556 of
Pond 3P: Wet Pond Peak Elev=901.49' Storage=51,700 cf Inflow=26.97 cfs 1.556 of
Outflow=13.60 cfs 1.302 of
Total Runoff Area = 16.370 ac Runoff Volume = 2.270 of Average Runoff Depth = 1.66"
98.92% Pervious = 16.192 ac 1.08% Impervious = 0.177 ac

Wetpond NOAA 24-hr 8 1-Year Rainfall=2.84"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 5
Summary for Subcatchment 1S: Pre -Development
Runoff = 13.96 cfs @ 12.12 hrs, Volume= 0.714 af, Depth> 1.05"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-19.98 hrs, dt= 0.06 hrs
NOAA 24-hr B 1-Year Rainfall=2.84"
Area (so CN Description
356,530 80 >75% Grass cover, Good, HSG D
356,530 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 1S: Pre -Development
Hydrograph
■ Runoff
1513.96 cfs---7------t------r- ;-----r---r--r---r--r--r---r--r---r--r
14 / 1401
IAA
12A�hr]3--I---
13 --
I I I I I
--A-amain 11T2-84"---r--7-- - ---r-
- -- --
12--L---'---L---'---L---'---L---'---L--L---'----'---L---'- -----'---L--L---
11 _Run;offAeea-356.530' sf''7-- ---', - -----! - - - --!------! -- ---
10�}---'---I - - - - - -L --J---
Run off Depth>1.05"- r--,-- -
3 $ -- --- -- --- -- -- -- ----- ------ ------ -- ---
LL7 T'c=5.0 min - - -- - -- - - - - - - -- - ---/��-- -- --- -- -- -- -- -- -- --- --- -- --- -- -- -- -
6 -VI '�Vj/
V1--- 1---L--- 1---L--- 1---L--J --- 1- --1---1------L------L--J---
5
--7 T r r r--7---I--I---T I T r--7---
4
3
2
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Time (hours)

Wetpond NOAA 24-hr 8 1-Year Rainfall=2.84"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 6
Hydrograph for Subcatchment 1S: Pre -Development
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
0.30
0.01
0.00
0.00
0.60
0.01
0.00
0.00
0.90
0.02
0.00
0.00
1.20
0.03
0.00
0.00
1.50
0.04
0.00
0.00
1.80
0.05
0.00
0.00
2.10
0.05
0.00
0.00
2.40
0.06
0.00
0.00
2.70
0.07
0.00
0.00
3.00
0.08
0.00
0.00
3.30
0.09
0.00
0.00
3.60
0.10
0.00
0.00
3.90
0.11
0.00
0.00
4.20
0.12
0.00
0.00
4.50
0.13
0.00
0.00
4.80
0.14
0.00
0.00
5.10
0.15
0.00
0.00
5.40
0.16
0.00
0.00
5.70
0.18
0.00
0.00
6.00
0.19
0.00
0.00
6.30
0.20
0.00
0.00
6.60
0.21
0.00
0.00
6.90
0.23
0.00
0.00
7.20
0.24
0.00
0.00
7.50
0.26
0.00
0.00
7.80
0.28
0.00
0.00
8.10
0.29
0.00
0.00
8.40
0.31
0.00
0.00
8.70
0.33
0.00
0.00
9.00
0.36
0.00
0.00
9.30
0.38
0.00
0.00
9.60
0.41
0.00
0.00
9.90
0.44
0.00
0.00
10.20
0.48
0.00
0.00
10.50
0.52
0.00
0.01
10.80
0.57
0.00
0.07
11.10
0.64
0.01
0.18
11.40
0.74
0.02
0.44
11.70
0.90
0.06
1.24
12.00
1.34
0.21
6.34
12.30
1.94
0.52
4.86
12.60
2.10
0.63
2.31
12.90
2.20
0.69
1.61
13.20
2.27
0.73
1.15
13.50
2.32
0.77
0.88
13.80
2.36
0.80
0.72
14.10
2.40
0.82
0.65
14.40
2.43
0.84
0.59
14.70
2.46
0.86
0.51
15.00
2.48
0.88
0.44
15.30
2.51
0.89
0.40
15.60
2.53
0.91
0.39
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
15.90
2.55
0.92
0.37
16.20
2.56
0.93
0.35
16.50
2.58
0.95
0.33
16.80
2.60
0.96
0.31
17.10
2.61
0.97
0.29
17.40
2.63
0.98
0.28
17.70
2.64
0.99
0.26
18.00
2.65
1.00
0.24
18.30
2.66
1.00
0.23
18.60
2.68
1.01
0.22
18.90
2.69
1.02
0.22
19.20
2.70
1.03
0.21
19.50
2.71
1.04
0.21
19.80
2.72
1.04
0.20

Wetpond NOAA 24-hr 8 1-Year Rainfall=2.84"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 7
Summary for Subcatchment 2S: Post -Development
Runoff = 26.97 cfs @ 12.11 hrs, Volume= 1.556 af, Depth> 2.28"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-19.98 hrs, dt= 0.06 hrs
NOAA 24-hr B 1-Year Rainfall=2.84"
Area (sf) CN Description
348,812
96 Gravel surface, HSG D
718
98 Concrete Sidewalk, HSG D
7,000
98 Roofs, HSG D
356,530
96 Weighted Average
348,812
97.84% Pervious Area
7,718
2.16% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 2S: Post -Development
Hydrograph
30 -- I ------ I ------ I ------ I-------------I-----'I--- I ------ I --- --- I - - ----
■Runoff
28 1 26.97 cfs
26 0AA 2�,hr1B I-
- 7 + + T F - - 1 - - - - - - - - - - + + T
24
_1rYear1Ra11infa11T2.84'1_11---
+ 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
22 -RLungffYAeea=356,-530 sf1r---1---I-- --I---7---I---t---I---r--,'---
20 1
18
Run1effVp1ume=l-.11v50at----- - - --- -- --
16 ' RunoffllDepth>2.28"-- -- --1---11---1---11---
0 14 ��= FO � 1 --1I --1--- + ---r
LL Z 1m-+--- I___L--- 1--- L--J --- I_ --I --- +--- I___+ --- I___L--J---
12
-VIY-1 +---1---+---1---r---1--- -- ---i--1---T---1---+---1---r-- ---
10
---1---1----1---1--- 1----1--- 1----1---1----11---1---1----1---1--- 1----1--- 1----1---
8
--r---r--r---1---r--- 1---r--- 1---r--�---r--1---r--- 1---+--- 1---r--�---
6 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
-----1---T
---1---T
--- 1 --- F--- 1--- 1----11---1- -1------1------1------1---
4
2
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Time (hours)

Wetpond NOAA 24-hr 8 1-Year Rainfall=2.84"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 8
Hydrograph for Subcatchment 2S: Post -Development
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
0.30
0.01
0.00
0.00
0.60
0.01
0.00
0.00
0.90
0.02
0.00
0.00
1.20
0.03
0.00
0.00
1.50
0.04
0.00
0.00
1.80
0.05
0.00
0.00
2.10
0.05
0.00
0.00
2.40
0.06
0.00
0.00
2.70
0.07
0.00
0.00
3.00
0.08
0.00
0.00
3.30
0.09
0.00
0.01
3.60
0.10
0.00
0.02
3.90
0.11
0.00
0.03
4.20
0.12
0.00
0.04
4.50
0.13
0.00
0.05
4.80
0.14
0.01
0.07
5.10
0.15
0.01
0.08
5.40
0.16
0.01
0.09
5.70
0.18
0.02
0.10
6.00
0.19
0.02
0.11
6.30
0.20
0.03
0.13
6.60
0.21
0.03
0.15
6.90
0.23
0.04
0.18
7.20
0.24
0.04
0.20
7.50
0.26
0.05
0.23
7.80
0.28
0.06
0.26
8.10
0.29
0.07
0.28
8.40
0.31
0.08
0.31
8.70
0.33
0.09
0.34
9.00
0.36
0.11
0.37
9.30
0.38
0.12
0.45
9.60
0.41
0.14
0.55
9.90
0.44
0.16
0.64
10.20
0.48
0.19
0.75
10.50
0.52
0.22
0.85
10.80
0.57
0.26
1.20
11.10
0.64
0.32
1.68
11.40
0.74
0.40
2.47
11.70
0.90
0.54
4.68
12.00
1.34
0.95
15.19
12.30
1.94
1.51
8.09
12.60
2.10
1.67
3.60
12.90
2.20
1.77
2.44
13.20
2.27
1.84
1.71
13.50
2.32
1.89
1.29
13.80
2.36
1.93
1.05
14.10
2.40
1.96
0.95
14.40
2.43
1.99
0.84
14.70
2.46
2.02
0.73
15.00
2.48
2.05
0.63
15.30
2.51
2.07
0.57
15.60
2.53
2.09
0.54
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
15.90
2.55
2.11
0.51
16.20
2.56
2.12
0.49
16.50
2.58
2.14
0.46
16.80
2.60
2.16
0.44
17.10
2.61
2.17
0.41
17.40
2.63
2.19
0.38
17.70
2.64
2.20
0.35
18.00
2.65
2.21
0.33
18.30
2.66
2.22
0.31
18.60
2.68
2.23
0.31
18.90
2.69
2.24
0.30
19.20
2.70
2.26
0.29
19.50
2.71
2.27
0.29
19.80
2.72
2.28
0.28

Wetpond NOAA 24-hr B 1-Year Rainfall=2.84"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 9
Summary for Pond 3P: Wet Pond
Inflow Area = 8.185 ac, 2.16% Impervious, Inflow Depth > 2.28" for 1-Year event
Inflow = 26.97 cfs @ 12.11 hrs, Volume= 1.556 of
Outflow = 13.60 cfs @ 12.22 hrs, Volume= 1.302 af, Atten= 50%, Lag= 6.5 min
Primary = 13.60 cfs @ 12.22 hrs, Volume= 1.302 of
Routing by Stor-Ind method, Time Span= 0.00-19.98 hrs, dt= 0.06 hrs
Starting Elev= 899.50' Surf.Area= 9,494 sf Storage= 28,561 cf
Peak Elev= 901.49' @ 12.22 hrs Surf.Area= 13,064 sf Storage= 51,700 cf (23,139 cf above start)
Flood Elev= 903.00' Surf.Area= 15,304 sf Storage= 73,043 cf (44,483 cf above start)
Plug -Flow detention time= 196.4 min calculated for 0.647 of (42% of inflow)
Center -of -Mass det. time= 42.0 min ( 788.9 - 746.8 )
Volume Invert
#1 895.00'
Avail.
e Description
89,119 cf Custom Stage Data (Irregular)Listed below (Recalc)
Elevation
Surf.Area Perim. Inc.Store Cum.Store
Wet.Area
(feet)
(sq-ft)
(feet) (cubic -feet) (cubic -feet)
(sq-ft)
895.00
4,145
328.1 0 0
4,145
896.00
4,953
374.2 4,543 4,543
6,745
897.00
6,126
390.0 5,529 10,072
7,779
898.00
7,050
400.0 6,583 16,655
8,522
899.00
8,024
424.7 7,532 24,186
10,194
900.00
11,088
456.2 9,515 33,701
12,446
901.00
12,361
471.7 11,719 45,420
13,681
902.00
13,804
490.5 13,076 58,496
15,199
903.00
15,304
509.4 14,548 73,043
16,784
904.00
16,860
528.2 16,076 89,119
18,420
Device Routing
Invert
Outlet Devices
#1 Primary
895.00'
30.0" Round Culvert
L= 42.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 895.00' / 894.00' S= 0.0238 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections,
Flow Area= 4.91 sf
#2 Device 1
899.50'
2.0" Vert. Orifice/Grate C= 0.600
#3 Device 1
900.50'
36.0" W x 3.0" H Vert. e X 4.00 C= 0.600
#4 Device 1
901.75'
16.0' long x 0.5' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00
Coef. (English) 2.80 2.92 3.08 3.30 3.32
Primary OutFlow Max=13.53 cfs @ 12.22 hrs HW=901.49' (Free Discharge)
L1=Culvert (Passes 13.53 cfs of 54.08 cfs potential flow)
12=Orifice/Grate (Orifice Controls 0.14 cfs @ 6.64 fps)
3=e (Orifice Controls 13.39 cfs @ 4.46 fps)
4= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Wetpond NOAA 24-hr 8 1-Year Rainfall=2.84"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 10
'=1 q IN AYM1'1 1 qi
Hydrograph
30--------Ii --------i --------Ii -- ❑ Inflow
26.97 CfS------II -- ---------'I -- ❑ Primary
'I ---I--- --'I--rI--+---IIII-- ---+! ----y
---I-- ---
28 -1ffA+e=
novg$9 ac
26
P24 -e i� o1.49'--r--! ---
--St i---irr'-------y------------------irt'----
-
-
-----I---' 5�,7IOO cI------I1-- ----rI-----
22 orage�f I rI
20 r-r
------ - -- ---- - - - -i -- 1--'---------ir'----ir'-----r------r-----ir'---
-
N
18-----Ii---r-r---I-rI-r---iI---rI-- r--r16---Ii --r--r---I---r--
3
I
13.60 cfS
0 14 _
L--J---I---L--J---I---r--
12--r---- r--r----r--r---I-r -
-r--- --r--r---r--r--r------r--
��--r---I---r--r---I---r--r--�---r--r-- -r--r---I---r--r---I---r--
10
---- -I- - -I ------I---------Ir -- - -----I---------I--- --
8 I I I - - I I I I I I I I I I I I I I
'I
I I I I I I I I I I I I I I I I I
-r------r--r---I-----r---I--- --r--r--r------r--------r--
6 ,'I I I I I I I I I I I I I I I I I I
4 I I___I-II___I-I-- ------I---------I--- --
I I I I
2
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Time (hours)

Wetpond NOAA 24-hr 8 1-Year Rainfall=2.84"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 11
Hydrograph for Pond 3P: Wet Pond
Time
Inflow
Storage
Elevation
Primary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
0.00
0.00
28,561
899.50
0.00
0.60
0.00
28,561
899.50
0.00
1.20
0.00
28,561
899.50
0.00
1.80
0.00
28,561
899.50
0.00
2.40
0.00
28,561
899.50
0.00
3.00
0.00
28,561
899.50
0.00
3.60
0.02
28,575
899.50
0.00
4.20
0.04
28,638
899.51
0.00
4.80
0.07
28,750
899.52
0.00
5.40
0.09
28,909
899.54
0.00
6.00
0.11
29,114
899.56
0.01
6.60
0.15
29,380
899.59
0.01
7.20
0.20
29,731
899.62
0.02
7.80
0.26
30,171
899.67
0.03
8.40
0.31
30,711
899.72
0.04
9.00
0.37
31,360
899.78
0.05
9.60
0.55
32,234
899.86
0.06
10.20
0.75
33,492
899.98
0.07
10.80
1.20
35,294
900.14
0.08
11.40
2.47
38,849
900.45
0.10
12.00
15.19
44,617
900.93
8.10
12.60
3.60
45,044
900.97
8.55
13.20
1.71
41,032
900.64
2.16
13.80
1.05
40,458
900.59
1.17
14.40
0.84
40,287
900.58
0.92
15.00
0.63
40,080
900.56
0.73
15.60
0.54
39,922
900.54
0.58
16.20
0.49
39,850
900.54
0.52
16.80
0.44
39,790
900.53
0.46
17.40
0.38
39,733
900.53
0.41
18.00
0.33
39,675
900.52
0.36
18.60
0.31
39,634
900.52
0.32
19.20
0.29
39,616
900.52
0.30
19.80
0.28
39,602
900.52
0.29

Wetpond NOAA 24-hr 8 1-Year Rainfall=2.84"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 12
Elevation Primary
(feet)
(cfs)
895.00
0.00
895.10
0.00
895.20
0.00
895.30
0.00
895.40
0.00
895.50
0.00
895.60
0.00
895.70
0.00
895.80
0.00
895.90
0.00
896.00
0.00
896.10
0.00
896.20
0.00
896.30
0.00
896.40
0.00
896.50
0.00
896.60
0.00
896.70
0.00
896.80
0.00
896.90
0.00
897.00
0.00
897.10
0.00
897.20
0.00
897.30
0.00
897.40
0.00
897.50
0.00
897.60
0.00
897.70
0.00
897.80
0.00
897.90
0.00
898.00
0.00
898.10
0.00
898.20
0.00
898.30
0.00
898.40
0.00
898.50
0.00
898.60
0.00
898.70
0.00
898.80
0.00
898.90
0.00
899.00
0.00
899.10
0.00
899.20
0.00
899.30
0.00
899.40
0.00
899.50
0.00
899.60
0.01
899.70
0.04
899.80
0.05
899.90
0.06
900.00
0.07
900.10
0.08
900.20
0.08
Stage -Discharge for Pond 3P: Wet Pond
Elevation Primary
(feet)
(cfs)
900.30
0.09
900.40
0.09
900.50
0.10
900.60
1.32
900.70
3.56
900.80
6.01
900.90
7.63
901.00
8.93
901.10
10.06
901.20
11.07
901.30
11.99
901.40
12.84
901.50
13.65
901.60
14.40
901.70
15.12
901.80
16.31
901.90
19.07
902.00
22.76
902.10
27.28
902.20
32.59
902.30
38.70
902.40
45.70
902.50
53.68
902.60
59.56
902.70
60.03
902.80
60.49
902.90
60.95
903.00
61.41
903.10
61.86
903.20
62.31
903.30
62.76
903.40
63.20
903.50
63.64
903.60
64.08
903.70
64.51
903.80
64.94
903.90
65.37
904.00
65.80

Wetpond NOAA 24-hr 8 1-Year Rainfall=2.84"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 13
Stage -Area -Storage for Pond 3P: Wet Pond
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
895.00
4,145
0
895.10
4,223
418
895.20
4,301
845
895.30
4,380
1,279
895.40
4,460
1,721
895.50
4,540
2,171
895.60
4,621
2,629
895.70
4,703
3,095
895.80
4,786
3,569
895.90
4,869
4,052
896.00
4,953
4,543
896.10
5,065
5,044
896.20
5,178
5,556
896.30
5,292
6,079
896.40
5,407
6,614
896.50
5,524
7,161
896.60
5,642
7,719
896.70
5,761
8,289
896.80
5,881
8,871
896.90
6,003
9,466
897.00
6,126
10,072
897.10
6,215
10,689
897.20
6,306
11,315
897.30
6,396
11,950
897.40
6,488
12,595
897.50
6,580
13,248
897.60
6,673
13,911
897.70
6,766
14,582
897.80
6,860
15,264
897.90
6,955
15,954
898.00
7,050
16,655
898.10
7,145
17,364
898.20
7,240
18,084
898.30
7,336
18,812
898.40
7,432
19,551
898.50
7,529
20,299
898.60
7,627
21,057
898.70
7,725
21,824
898.80
7,824
22,602
898.90
7,924
23,389
899.00
8,024
24,186
899.10
8,308
25,003
899.20
8,597
25,848
899.30
8,891
26,723
899.40
9,190
27,627
899.50
9,494
28,561
899.60
9,803
29,526
899.70
10,117
30,522
899.80
10,436
31,549
899.90
10,759
32,609
900.00
11,088
33,701
900.10
11,212
34,816
900.20
11,337
35,944
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
900.30
11,463
37,084
900.40
11,589
38,236
900.50
11,716
39,402
900.60
11,844
40,579
900.70
11,972
41,770
900.80
12,101
42,974
900.90
12,231
44,190
901.00
12,361
45,420
901.10
12,502
46,663
901.20
12,643
47,920
901.30
12,786
49,192
901.40
12,929
50,478
901.50
13,073
51,778
901.60
13,217
53,092
901.70
13,363
54,421
901.80
13,509
55,765
901.90
13,656
57,123
902.00
13,804
58,496
902.10
13,951
59,884
902.20
14,098
61,286
902.30
14,246
62,703
902.40
14,395
64,135
902.50
14,544
65,582
902.60
14,695
67,044
902.70
14,846
68,521
902.80
14,998
70,013
902.90
15,151
71,521
903.00
15,304
73,043
903.10
15,456
74,581
903.20
15,609
76,135
903.30
15,763
77,703
903.40
15,917
79,287
903.50
16,073
80,887
903.60
16,229
82,502
903.70
16,385
84,133
903.80
16,543
85,779
903.90
16,701
87,441
904.00
16,860
89,119

Wetpond NOAA 24-hr 8 2-Year Rainfall=3.45"
Prepared by {enter your company name here} Printed 2/22/2019
HvdroCAD® 10.00-21 s/n 05338 © 2018 HvdroCAD Software Solutions LLC Paae 14
Time span=0.00-20.00 hrs, dt=0.06 hrs, 334 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment1S: Pre -Development Runoff Area=356,530 sf 0.00% Impervious Runoff Depth>1.49"
Tc=5.0 min CN=80 Runoff=19.78 cfs 1.014 of
Subcatchment2S: Post -Development Runoff Area=356,530 sf 2.16% Imperious Runoff Depth>2.86"
Tc=5.0 min CN=96 Runoff=33.26 cfs 1.949 of
Pond 3P: Wet Pond Peak Elev=901.78' Storage=55,512 cf Inflow=33.26 cfs 1.949 of
Outflow=16.08 cfs 1.694 of
Total Runoff Area = 16.370 ac Runoff Volume = 2.962 of Average Runoff Depth = 2.17"
98.92% Pervious = 16.192 ac 1.08% Impervious = 0.177 ac

Wetpond NOAA 24-hr 8 2-Year Rainfall=3.45"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 15
Summary for Subcatchment 1S: Pre -Development
Runoff = 19.78 cfs @ 12.12 hrs, Volume= 1.014 af, Depth> 1.49"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-19.98 hrs, dt= 0.06 hrs
NOAA 24-hr B 2-Year Rainfall=3.45"
Area (so CN Description
356,530 80 >75% Grass cover, Good, HSG D
356,530 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 1S: Pre -Development
Hydrograph
--+----- ----- 1---+---1---r---1---+--+---1---+---1---+---1---+---1---r--+---
22--r------T---r--r---1---r------r-- ---------1---T---1---r------r--�---
■Runoff
21
-- - --- - --- - ------ 19.78 cfs --- - -- - --
20 40-------' -----------------'---
19
_I AA 24..hrJ - ---- -- -- -------+------+------ -- ---
18 - - T -- .�H� M---r-- ---i ----1---T---1---r---1---r-- ---
17 _�-_r_I eariRainfafl= ----
��{{^TJN► r--J --- -- --1---1-------------L--J---
15 / - �i��; ,L-I -3VV, WnVVI---1--,---'I----'I--- --- --- i--- ---I--,---
14 1Or Vplume=lo af--i---I - ----- ------------�I ---
13-------------------------------------- --------------------------
^ I I I I I I I I I I I I I I I I I 1
12 Rt nDe tK>1:49"-- - -- - --- ---'I-------'I-------'I---
3 11-4------+------+------r------r-- ---i------+------+------r-- ---
a 10-1-c=5.-ClTmirv-r------r------r-- --------T------r---
-
--r-- ---
8E?o1---1---L---1---L---1---L--J---1---1---1------i------L-- ---
1 1 1 1 1 1 1 1 1 1 1 1 1
7---------+---------------------------i------+---i------i--- -- ---
6--T------Y------r------r--7---r--r---I- -----Y------t--7---r--r---
i
5--II___�__II_--I---�---I---�---I---�---I---�-I---II---I---�---I---�---I---
i
Q---------------------------------'- -------------------'---
, I I I I I I I I I I I I I I I I I I
3 --------+---i------i------i--- -- ---i----+---i------i--- -- ---
2--T------T---li---T---li---T---li---T--T---li - - ---li---T---li---T--T---
1
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Time (hours)

Wetpond NOAA 24-hr 8 2-Year Rainfall=3.45"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 16
Hydrograph for Subcatchment 1S: Pre -Development
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
0.30
0.01
0.00
0.00
0.60
0.02
0.00
0.00
0.90
0.03
0.00
0.00
1.20
0.04
0.00
0.00
1.50
0.05
0.00
0.00
1.80
0.06
0.00
0.00
2.10
0.07
0.00
0.00
2.40
0.08
0.00
0.00
2.70
0.09
0.00
0.00
3.00
0.10
0.00
0.00
3.30
0.11
0.00
0.00
3.60
0.12
0.00
0.00
3.90
0.13
0.00
0.00
4.20
0.15
0.00
0.00
4.50
0.16
0.00
0.00
4.80
0.17
0.00
0.00
5.10
0.19
0.00
0.00
5.40
0.20
0.00
0.00
5.70
0.21
0.00
0.00
6.00
0.23
0.00
0.00
6.30
0.24
0.00
0.00
6.60
0.26
0.00
0.00
6.90
0.28
0.00
0.00
7.20
0.29
0.00
0.00
7.50
0.31
0.00
0.00
7.80
0.34
0.00
0.00
8.10
0.36
0.00
0.00
8.40
0.38
0.00
0.00
8.70
0.41
0.00
0.00
9.00
0.43
0.00
0.00
9.30
0.46
0.00
0.00
9.60
0.50
0.00
0.00
9.90
0.54
0.00
0.02
10.20
0.58
0.00
0.06
10.50
0.63
0.01
0.12
10.80
0.69
0.01
0.23
11.10
0.78
0.03
0.44
11.40
0.90
0.05
0.85
11.70
1.10
0.12
2.09
12.00
1.63
0.35
9.45
12.30
2.35
0.79
6.67
12.60
2.55
0.93
3.12
12.90
2.67
1.01
2.16
13.20
2.76
1.07
1.54
13.50
2.82
1.12
1.17
13.80
2.87
1.15
0.96
14.10
2.91
1.19
0.87
14.40
2.95
1.22
0.78
14.70
2.99
1.24
0.68
15.00
3.02
1.26
0.59
15.30
3.04
1.28
0.53
15.60
3.07
1.30
0.51
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
15.90
3.09
1.32
0.48
16.20
3.11
1.34
0.46
16.50
3.14
1.35
0.44
16.80
3.16
1.37
0.41
17.10
3.17
1.38
0.39
17.40
3.19
1.40
0.36
17.70
3.21
1.41
0.34
18.00
3.22
1.42
0.31
18.30
3.24
1.43
0.30
18.60
3.25
1.44
0.29
18.90
3.26
1.45
0.29
19.20
3.28
1.46
0.28
19.50
3.29
1.47
0.28
19.80
3.30
1.48
0.27

Wetpond NOAA 24-hr 8 2-Year Rainfall=3.45"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 17
Summary for Subcatchment 2S: Post -Development
Runoff = 33.26 cfs @ 12.11 hrs, Volume= 1.949 af, Depth> 2.86"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-19.98 hrs, dt= 0.06 hrs
NOAA 24-hr B 2-Year Rainfall=3.45"
Area (sf) CN Description
348,812
96 Gravel surface, HSG D
718
98 Concrete Sidewalk, HSG D
7,000
98 Roofs, HSG D
356,530
96 Weighted Average
348,812
97.84% Pervious Area
7,718
2.16% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 2S: Post -Development
Hydrograph
36 ■Runoff
--�---'---+---'---+---'---�---'---�--� 33.26 cfs---+---'---+---'---�--�-
32 J - �/'-'i1/-t, ��JIIrLv-'--- L---'---L--J----- --- 1---1--- '---+--- '---L__J
+ I I I I I I I I I I I I I I I I I I
30-�-1FarIRalfn#NT3:3'�I----------I-------------------------�I ---
28 p�
26 [YI�I' A�'Qa=J�2sf
24 - u1n'1 1 ' IV I V u m e= .94
-- ------+------+------T-- ---
22
*_T�_\/r�___I___T__T___I+___I___T___I___r__T___
,emu 20-RunoOD�ip h>2_8®"-----' -- ---'r--'r--7------T------r-- ---
0 18 + - CC + -+---I---+--+---+--+---- -----+------+--+---+--+---
a 16 ��i� 1- -mile
14-+ON 196,------+------+-----+--+---'- -----+---------- ---+--+---
12--,-----+------+------L----------'------+------+-----L--�---
10--1---1---1---'---L---'---L---'---L--L---'- -----1------L------L--L---
8
6
q
-
-T------T------T------T------T- -T- -- - -T -
9 I I I
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Time (hours)

Wetpond NOAA 24-hr 8 2-Year Rainfall=3.45"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 18
Hydrograph for Subcatchment 2S: Post -Development
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
0.30
0.01
0.00
0.00
0.60
0.02
0.00
0.00
0.90
0.03
0.00
0.00
1.20
0.04
0.00
0.00
1.50
0.05
0.00
0.00
1.80
0.06
0.00
0.00
2.10
0.07
0.00
0.00
2.40
0.08
0.00
0.00
2.70
0.09
0.00
0.00
3.00
0.10
0.00
0.02
3.30
0.11
0.00
0.03
3.60
0.12
0.00
0.05
3.90
0.13
0.01
0.06
4.20
0.15
0.01
0.08
4.50
0.16
0.01
0.10
4.80
0.17
0.02
0.11
5.10
0.19
0.02
0.13
5.40
0.20
0.03
0.14
5.70
0.21
0.03
0.16
6.00
0.23
0.04
0.17
6.30
0.24
0.04
0.20
6.60
0.26
0.05
0.23
6.90
0.28
0.06
0.26
7.20
0.29
0.07
0.29
7.50
0.31
0.08
0.32
7.80
0.34
0.10
0.36
8.10
0.36
0.11
0.39
8.40
0.38
0.12
0.43
8.70
0.41
0.14
0.47
9.00
0.43
0.16
0.51
9.30
0.46
0.18
0.61
9.60
0.50
0.21
0.73
9.90
0.54
0.24
0.85
10.20
0.58
0.27
0.98
10.50
0.63
0.31
1.11
10.80
0.69
0.36
1.55
11.10
0.78
0.43
2.15
11.40
0.90
0.54
3.14
11.70
1.10
0.72
5.89
12.00
1.63
1.22
18.85
12.30
2.35
1.92
9.94
12.60
2.55
2.11
4.41
12.90
2.67
2.23
2.99
13.20
2.76
2.32
2.09
13.50
2.82
2.38
1.58
13.80
2.87
2.42
1.29
14.10
2.91
2.47
1.16
14.40
2.95
2.51
1.03
14.70
2.99
2.54
0.90
15.00
3.02
2.57
0.77
15.30
3.04
2.60
0.70
15.60
3.07
2.62
0.66
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
15.90
3.09
2.64
0.63
16.20
3.11
2.66
0.60
16.50
3.14
2.69
0.56
16.80
3.16
2.71
0.53
17.10
3.17
2.72
0.50
17.40
3.19
2.74
0.47
17.70
3.21
2.76
0.43
18.00
3.22
2.77
0.40
18.30
3.24
2.79
0.38
18.60
3.25
2.80
0.37
18.90
3.26
2.81
0.37
19.20
3.28
2.83
0.36
19.50
3.29
2.84
0.35
19.80
3.30
2.85
0.34

Wetpond NOAA 24-hr B 2-Year Rainfall=3.45"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 19
Summary for Pond 3P: Wet Pond
Inflow Area = 8.185 ac, 2.16% Impervious, Inflow Depth > 2.86" for 2-Year event
Inflow = 33.26 cfs @ 12.11 hrs, Volume= 1.949 of
Outflow = 16.08 cfs @ 12.24 hrs, Volume= 1.694 af, Atten= 52%, Lag= 7.3 min
Primary = 16.08 cfs @ 12.24 hrs, Volume= 1.694 of
Routing by Stor-Ind method, Time Span= 0.00-19.98 hrs, dt= 0.06 hrs
Starting Elev= 899.50' Surf.Area= 9,494 sf Storage= 28,561 cf
Peak Elev= 901.78' @ 12.23 hrs Surf.Area= 13,482 sf Storage= 55,512 cf (26,951 cf above start)
Flood Elev= 903.00' Surf.Area= 15,304 sf Storage= 73,043 cf (44,483 cf above start)
Plug -Flow detention time= 162.1 min calculated for 1.038 of (53% of inflow)
Center -of -Mass det. time= 41.1 min ( 783.3 - 742.2 )
Volume Invert
#1 895.00'
Avail.
e Description
89,119 cf Custom Stage Data (Irregular)Listed below (Recalc)
Elevation
Surf.Area Perim. Inc.Store Cum.Store
Wet.Area
(feet)
(sq-ft)
(feet) (cubic -feet) (cubic -feet)
(sq-ft)
895.00
4,145
328.1 0 0
4,145
896.00
4,953
374.2 4,543 4,543
6,745
897.00
6,126
390.0 5,529 10,072
7,779
898.00
7,050
400.0 6,583 16,655
8,522
899.00
8,024
424.7 7,532 24,186
10,194
900.00
11,088
456.2 9,515 33,701
12,446
901.00
12,361
471.7 11,719 45,420
13,681
902.00
13,804
490.5 13,076 58,496
15,199
903.00
15,304
509.4 14,548 73,043
16,784
904.00
16,860
528.2 16,076 89,119
18,420
Device Routing
Invert
Outlet Devices
#1 Primary
895.00'
30.0" Round Culvert
L= 42.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 895.00' / 894.00' S= 0.0238 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections,
Flow Area= 4.91 sf
#2 Device 1
899.50'
2.0" Vert. Orifice/Grate C= 0.600
#3 Device 1
900.50'
36.0" W x 3.0" H Vert. e X 4.00 C= 0.600
#4 Device 1
901.75'
16.0' long x 0.5' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00
Coef. (English) 2.80 2.92 3.08 3.30 3.32
Primary OutFlow Max=15.86 cfs @ 12.24 hrs HW=901.78' (Free Discharge)
L1=Culvert (Passes 15.86 cfs of 55.57 cfs potential flow)
12=Orifice/Grate (Orifice Controls 0.16 cfs @ 7.13 fps)
3=e (Orifice Controls 15.50 cfs @ 5.17 fps)
4= Broad -Crested Rectangular Weir (Weir Controls 0.20 cfs @ 0.46 fps)

Wetpond NOAA 24-hr 8 2-Year Rainfall=3.45"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 20
'=1 q IN AYM1'1 1 qi
Hydrograph
C Inflow
36
33.26 Cfs
❑ Primary
34
__In fCw� Ares-.'ga-arc
-+---- --+--
------
--+------
--
32
30
-Pea* 1Ov *QO178F----+----
--+--
------}---------
--
28
-Storage-551-c��+---���-
26
+--��---���---��---���---
24
22
+ + + +--+ -- +
+
+ +
+
+
+
H
u 20
0 18
16.08 cfs
+--
LL 16
�i
-- --------+------+--------+-
--+---i---+--+---i---+--+---i---+--+---i
--+--+------+--+------+--
------+--
------
--
14
12
-
+ - - + - - -
I- -
- + - -
10
8
6
4
2
0
0 1
2 3 4 5 6 7 8 9 10
11 12 13 14
15 16
17
18 19
Time (hours)

Wetpond NOAA 24-hr 8 2-Year Rainfall=3.45"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 21
Hydrograph for Pond 3P: Wet Pond
Time
Inflow
Storage
Elevation
Primary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
0.00
0.00
28,561
899.50
0.00
0.60
0.00
28,561
899.50
0.00
1.20
0.00
28,561
899.50
0.00
1.80
0.00
28,561
899.50
0.00
2.40
0.00
28,561
899.50
0.00
3.00
0.02
28,572
899.50
0.00
3.60
0.05
28,643
899.51
0.00
4.20
0.08
28,779
899.52
0.00
4.80
0.11
28,977
899.54
0.01
5.40
0.14
29,235
899.57
0.01
6.00
0.17
29,549
899.60
0.02
6.60
0.23
29,936
899.64
0.02
7.20
0.29
30,429
899.69
0.03
7.80
0.36
31,043
899.75
0.04
8.40
0.43
31,790
899.82
0.05
9.00
0.51
32,678
899.91
0.06
9.60
0.73
33,858
900.01
0.07
10.20
0.98
35,530
900.16
0.08
10.80
1.55
37,887
900.37
0.09
11.40
3.14
41,109
900.64
2.29
12.00
18.85
46,070
901.05
9.53
12.60
4.41
47,730
901.18
10.91
13.20
2.09
41,333
900.66
2.68
13.80
1.29
40,611
900.60
1.44
14.40
1.03
40,415
900.59
1.10
15.00
0.77
40,237
900.57
0.88
15.60
0.66
40,059
900.56
0.71
16.20
0.60
39,973
900.55
0.63
16.80
0.53
39,901
900.54
0.57
17.40
0.47
39,830
900.54
0.50
18.00
0.40
39,760
900.53
0.43
18.60
0.37
39,710
900.53
0.39
19.20
0.36
39,688
900.52
0.37
19.80
0.34
39,670
900.52
0.35

Wetpond NOAA 24-hr 8 2-Year Rainfall=3.45"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 22
Elevation Primary
(feet)
(cfs)
895.00
0.00
895.10
0.00
895.20
0.00
895.30
0.00
895.40
0.00
895.50
0.00
895.60
0.00
895.70
0.00
895.80
0.00
895.90
0.00
896.00
0.00
896.10
0.00
896.20
0.00
896.30
0.00
896.40
0.00
896.50
0.00
896.60
0.00
896.70
0.00
896.80
0.00
896.90
0.00
897.00
0.00
897.10
0.00
897.20
0.00
897.30
0.00
897.40
0.00
897.50
0.00
897.60
0.00
897.70
0.00
897.80
0.00
897.90
0.00
898.00
0.00
898.10
0.00
898.20
0.00
898.30
0.00
898.40
0.00
898.50
0.00
898.60
0.00
898.70
0.00
898.80
0.00
898.90
0.00
899.00
0.00
899.10
0.00
899.20
0.00
899.30
0.00
899.40
0.00
899.50
0.00
899.60
0.01
899.70
0.04
899.80
0.05
899.90
0.06
900.00
0.07
900.10
0.08
900.20
0.08
Stage -Discharge for Pond 3P: Wet Pond
Elevation Primary
(feet)
(cfs)
900.30
0.09
900.40
0.09
900.50
0.10
900.60
1.32
900.70
3.56
900.80
6.01
900.90
7.63
901.00
8.93
901.10
10.06
901.20
11.07
901.30
11.99
901.40
12.84
901.50
13.65
901.60
14.40
901.70
15.12
901.80
16.31
901.90
19.07
902.00
22.76
902.10
27.28
902.20
32.59
902.30
38.70
902.40
45.70
902.50
53.68
902.60
59.56
902.70
60.03
902.80
60.49
902.90
60.95
903.00
61.41
903.10
61.86
903.20
62.31
903.30
62.76
903.40
63.20
903.50
63.64
903.60
64.08
903.70
64.51
903.80
64.94
903.90
65.37
904.00
65.80

Wetpond NOAA 24-hr 8 2-Year Rainfall=3.45"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 23
Stage -Area -Storage for Pond 3P: Wet Pond
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
895.00
4,145
0
895.10
4,223
418
895.20
4,301
845
895.30
4,380
1,279
895.40
4,460
1,721
895.50
4,540
2,171
895.60
4,621
2,629
895.70
4,703
3,095
895.80
4,786
3,569
895.90
4,869
4,052
896.00
4,953
4,543
896.10
5,065
5,044
896.20
5,178
5,556
896.30
5,292
6,079
896.40
5,407
6,614
896.50
5,524
7,161
896.60
5,642
7,719
896.70
5,761
8,289
896.80
5,881
8,871
896.90
6,003
9,466
897.00
6,126
10,072
897.10
6,215
10,689
897.20
6,306
11,315
897.30
6,396
11,950
897.40
6,488
12,595
897.50
6,580
13,248
897.60
6,673
13,911
897.70
6,766
14,582
897.80
6,860
15,264
897.90
6,955
15,954
898.00
7,050
16,655
898.10
7,145
17,364
898.20
7,240
18,084
898.30
7,336
18,812
898.40
7,432
19,551
898.50
7,529
20,299
898.60
7,627
21,057
898.70
7,725
21,824
898.80
7,824
22,602
898.90
7,924
23,389
899.00
8,024
24,186
899.10
8,308
25,003
899.20
8,597
25,848
899.30
8,891
26,723
899.40
9,190
27,627
899.50
9,494
28,561
899.60
9,803
29,526
899.70
10,117
30,522
899.80
10,436
31,549
899.90
10,759
32,609
900.00
11,088
33,701
900.10
11,212
34,816
900.20
11,337
35,944
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
900.30
11,463
37,084
900.40
11,589
38,236
900.50
11,716
39,402
900.60
11,844
40,579
900.70
11,972
41,770
900.80
12,101
42,974
900.90
12,231
44,190
901.00
12,361
45,420
901.10
12,502
46,663
901.20
12,643
47,920
901.30
12,786
49,192
901.40
12,929
50,478
901.50
13,073
51,778
901.60
13,217
53,092
901.70
13,363
54,421
901.80
13,509
55,765
901.90
13,656
57,123
902.00
13,804
58,496
902.10
13,951
59,884
902.20
14,098
61,286
902.30
14,246
62,703
902.40
14,395
64,135
902.50
14,544
65,582
902.60
14,695
67,044
902.70
14,846
68,521
902.80
14,998
70,013
902.90
15,151
71,521
903.00
15,304
73,043
903.10
15,456
74,581
903.20
15,609
76,135
903.30
15,763
77,703
903.40
15,917
79,287
903.50
16,073
80,887
903.60
16,229
82,502
903.70
16,385
84,133
903.80
16,543
85,779
903.90
16,701
87,441
904.00
16,860
89,119

Wetpond NOAA 24-hr 8 10-Year Rainfall=5.09"
Prepared by {enter your company name here} Printed 2/22/2019
HvdroCAD® 10.00-21 s/n 05338 © 2018 HvdroCAD Software Solutions LLC Paae 24
Time span=0.00-20.00 hrs, dt=0.06 hrs, 334 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment1S: Pre -Development Runoff Area=356,530 sf 0.00% Impervious Runoff Depth>2.79"
Tc=5.0 min CN=80 Runoff=36.46 cfs 1.903 of
Subcatchment2S: Post -Development Runoff Area=356,530 sf 2.16% Imperious Runoff Depth>4.42"
Tc=5.0 min CN=96 Runoff=50.01 cfs 3.012 of
Pond 3P: Wet Pond Peak Elev=902.25' Storage=61,999 cf Inflow=50.01 cfs 3.012 of
Outflow=35.63 cfs 2.753 of
Total Runoff Area = 16.370 ac Runoff Volume = 4.915 of Average Runoff Depth = 3.60"
98.92% Pervious = 16.192 ac 1.08% Impervious = 0.177 ac

Wetpond NOAA 24-hr 8 10-Year Rainfall=5.09"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 25
Summary for Subcatchment 1S: Pre -Development
Runoff = 36.46 cfs @ 12.12 hrs, Volume= 1.903 af, Depth> 2.79"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-19.98 hrs, dt= 0.06 hrs
NOAA 24-hr B 10-Year Rainfall=5.09"
Area (so CN Description
356,530 80 >75% Grass cover, Good, HSG D
356,530 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 1S: Pre -Development
Hydrograph
40
38
__---I------I------I-------------1---T --
------I---
--i---p'-p-i------L------L---'--- -- 36.46 cfs---i-------------L---
---I---
---I---
■Runoff
36
/-rl-Y124-hr13--'---------L--J---' ----'------'---
---'---
--J---
34
32
- ^--�'---+---'--- ----- -^---- -- ---'--------+---'---
J-a0-Yrear Rlainfal�l=&09---+--+---+- ---+--+--+---+--+---+--+---
---'---
--
---
2$
-Run'off�'Aeea:3S�,- 3�' sfir-- ----------t ---
- 1
--r---r--r---1---r---1-- r --1-- r--r ---r- --I --- r---
------
I --- r---
---r--
I --- r--r---
---
26
- trnl------ ume=190 of -- ---1-- --1---r---1---r---1---r--r---
24
N
22
-- ------ -------�---------------�-- --�--- -------------------
� p I I I
-FTC 2.-7-9"------------I-- --I--------------------�I---
I
I
a 18
C�}ff+Depth
- c=-5F01'm�� -' - - -- - -- - - -
- -
- --
--
16
_0I�-S01---1---L---1---L---1---L-- - - -'---1---1---'---L------L--
I- --
14
i I I I I I
--1---1---1---'---L---'---L---'---L-- ---'------+------L------L--
I I
1
1
---
1
10
--+------+------+------+------+--+---+ -----+--+---+--+---+--+---
$
------Ir-- t------ r------ r------ Ir-- - - - -Ir ----t---
---+--ti---r
--
I---
6
--r---r--Y---I___r___I---r------r--r---I- 1---Y------r-----r--r---
4
1
T- - -I - T - - -I-- T___I__ T -- -I-- T--T--- 7-
I
I___T---I---T--T---
1
2
Q
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Time (hours)
16 17
18 19

Wetpond NOAA 24-hr 8 10-Year Rainfall=5.09"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 26
Hydrograph for Subcatchment 1S: Pre -Development
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
0.30
0.01
0.00
0.00
0.60
0.03
0.00
0.00
0.90
0.04
0.00
0.00
1.20
0.05
0.00
0.00
1.50
0.07
0.00
0.00
1.80
0.08
0.00
0.00
2.10
0.10
0.00
0.00
2.40
0.11
0.00
0.00
2.70
0.13
0.00
0.00
3.00
0.15
0.00
0.00
3.30
0.16
0.00
0.00
3.60
0.18
0.00
0.00
3.90
0.20
0.00
0.00
4.20
0.22
0.00
0.00
4.50
0.23
0.00
0.00
4.80
0.25
0.00
0.00
5.10
0.27
0.00
0.00
5.40
0.29
0.00
0.00
5.70
0.31
0.00
0.00
6.00
0.33
0.00
0.00
6.30
0.36
0.00
0.00
6.60
0.38
0.00
0.00
6.90
0.41
0.00
0.00
7.20
0.43
0.00
0.00
7.50
0.46
0.00
0.00
7.80
0.50
0.00
0.00
8.10
0.53
0.00
0.01
8.40
0.56
0.00
0.04
8.70
0.60
0.00
0.07
9.00
0.64
0.01
0.10
9.30
0.68
0.01
0.15
9.60
0.73
0.02
0.22
9.90
0.79
0.03
0.31
10.20
0.85
0.04
0.41
10.50
0.93
0.06
0.53
10.80
1.02
0.09
0.83
11.10
1.14
0.13
1.32
11.40
1.32
0.20
2.19
11.70
1.62
0.35
4.77
12.00
2.41
0.83
18.66
12.30
3.47
1.61
11.72
12.60
3.77
1.85
5.37
12.90
3.95
2.00
3.69
13.20
4.07
2.10
2.60
13.50
4.16
2.18
1.97
13.80
4.24
2.24
1.62
14.10
4.30
2.29
1.46
14.40
4.36
2.34
1.30
14.70
4.41
2.38
1.14
15.00
4.45
2.42
0.98
15.30
4.49
2.45
0.89
15.60
4.53
2.48
0.85
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
15.90
4.56
2.51
0.80
16.20
4.59
2.54
0.77
16.50
4.63
2.57
0.72
16.80
4.66
2.59
0.68
17.10
4.68
2.62
0.64
17.40
4.71
2.64
0.60
17.70
4.73
2.66
0.56
18.00
4.76
2.68
0.52
18.30
4.78
2.70
0.49
18.60
4.80
2.72
0.48
18.90
4.82
2.73
0.47
19.20
4.84
2.75
0.47
19.50
4.86
2.77
0.46
19.80
4.87
2.78
0.44

Wetpond NOAA 24-hr 8 10-Year Rainfall=5.09"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 27
Summary for Subcatchment 2S: Post -Development
Runoff = 50.01 cfs @ 12.11 hrs, Volume= 3.012 af, Depth> 4.42"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-19.98 hrs, dt= 0.06 hrs
NOAA 24-hr B 10-Year Rainfall=5.09"
Area (sf) CN Description
348,812
96 Gravel surface, HSG D
718
98 Concrete Sidewalk, HSG D
7,000
98 Roofs, HSG D
356,530
96 Weighted Average
348,812
97.84% Pervious Area
7,718
2.16% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 2S: Post -Development
Hydrograph
55
--+---+--+---+--+--+---r------+--+ 50.01
50 NO 'A 24,hr''B
------------------+---------------------
45 10-Year Rainfa[1=5.09"
-- 7---I--- T- - - I- -- T- - - I- -- r- - -I- -- r -- r---I--
4° Runoff Aeea=356,5301 sf'
35 Flu n'loff''1 VQI uilme=3.'101 2 of
^ - - T - - - I--- T - - - I--- T - - - I--- r - - -I - - - r - - T - - - -
30 Runoff Depth>4.42"
3 - L--I---1---1---L---1---L--- 1---L---] 1-
25 T'c=5A min
�N=196T I T IT I�I Ir--�---�
20
-- 1---1--- 1--- 1--- L--- 1--- L---1--- L -- L---
15
---1----+---1---T---1---r ------ 1----1----
10
--�--- i---11---L---11---I-- ---I -
5
1---1--- L---1--- L -- L
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Time (hours)

Wetpond NOAA 24-hr 8 10-Year Rainfall=5.09"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 28
Hydrograph for Subcatchment 2S: Post -Development
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
0.30
0.01
0.00
0.00
0.60
0.03
0.00
0.00
0.90
0.04
0.00
0.00
1.20
0.05
0.00
0.00
1.50
0.07
0.00
0.00
1.80
0.08
0.00
0.00
2.10
0.10
0.00
0.02
2.40
0.11
0.00
0.05
2.70
0.13
0.00
0.08
3.00
0.15
0.01
0.10
3.30
0.16
0.01
0.13
3.60
0.18
0.02
0.16
3.90
0.20
0.02
0.18
4.20
0.22
0.03
0.21
4.50
0.23
0.04
0.23
4.80
0.25
0.05
0.26
5.10
0.27
0.06
0.28
5.40
0.29
0.07
0.31
5.70
0.31
0.08
0.33
6.00
0.33
0.09
0.35
6.30
0.36
0.11
0.39
6.60
0.38
0.12
0.44
6.90
0.41
0.14
0.49
7.20
0.43
0.16
0.54
7.50
0.46
0.18
0.59
7.80
0.50
0.20
0.65
8.10
0.53
0.23
0.70
8.40
0.56
0.26
0.75
8.70
0.60
0.29
0.81
9.00
0.64
0.32
0.87
9.30
0.68
0.35
1.03
9.60
0.73
0.40
1.22
9.90
0.79
0.44
1.41
10.20
0.85
0.50
1.60
10.50
0.93
0.56
1.80
10.80
1.02
0.65
2.48
11.10
1.14
0.76
3.42
11.40
1.32
0.93
4.91
11.70
1.62
1.21
9.09
12.00
2.41
1.97
28.59
12.30
3.47
3.01
14.86
12.60
3.77
3.31
6.58
12.90
3.95
3.49
4.45
13.20
4.07
3.61
3.11
13.50
4.16
3.70
2.35
13.80
4.24
3.77
1.91
14.10
4.30
3.84
1.72
14.40
4.36
3.89
1.53
14.70
4.41
3.95
1.34
15.00
4.45
3.99
1.14
15.30
4.49
4.03
1.03
15.60
4.53
4.06
0.99
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
15.90
4.56
4.10
0.94
16.20
4.59
4.13
0.89
16.50
4.63
4.16
0.84
16.80
4.66
4.19
0.79
17.10
4.68
4.22
0.74
17.40
4.71
4.24
0.69
17.70
4.73
4.27
0.64
18.00
4.76
4.29
0.60
18.30
4.78
4.31
0.57
18.60
4.80
4.33
0.56
18.90
4.82
4.35
0.54
19.20
4.84
4.37
0.53
19.50
4.86
4.39
0.52
19.80
4.87
4.41
0.51

Wetpond NOAA 24-hr B 10-Year Rainfall=5.09"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 29
Summary for Pond 3P: Wet Pond
Inflow Area = 8.185 ac, 2.16% Impervious, Inflow Depth > 4.42" for 10-Year event
Inflow = 50.01 cfs @ 12.11 hrs, Volume= 3.012 of
Outflow = 35.63 cfs @ 12.19 hrs, Volume= 2.753 af, Atten= 29%, Lag= 4.4 min
Primary = 35.63 cfs @ 12.19 hrs, Volume= 2.753 of
Routing by Stor-Ind method, Time Span= 0.00-19.98 hrs, dt= 0.06 hrs
Starting Elev= 899.50' Surf.Area= 9,494 sf Storage= 28,561 cf
Peak Elev= 902.25' @ 12.19 hrs Surf.Area= 14,172 sf Storage= 61,999 cf (33,438 cf above start)
Flood Elev= 903.00' Surf.Area= 15,304 sf Storage= 73,043 cf (44,483 cf above start)
Plug -Flow detention time= 129.0 min calculated for 2.097 of (70% of inflow)
Center -of -Mass det. time= 37.5 min ( 771.2 - 733.7 )
Volume Invert
#1 895.00'
Avail.
e Description
89,119 cf Custom Stage Data (Irregular)Listed below (Recalc)
Elevation
Surf.Area Perim. Inc.Store Cum.Store
Wet.Area
(feet)
(sq-ft)
(feet) (cubic -feet) (cubic -feet)
(sq-ft)
895.00
4,145
328.1 0 0
4,145
896.00
4,953
374.2 4,543 4,543
6,745
897.00
6,126
390.0 5,529 10,072
7,779
898.00
7,050
400.0 6,583 16,655
8,522
899.00
8,024
424.7 7,532 24,186
10,194
900.00
11,088
456.2 9,515 33,701
12,446
901.00
12,361
471.7 11,719 45,420
13,681
902.00
13,804
490.5 13,076 58,496
15,199
903.00
15,304
509.4 14,548 73,043
16,784
904.00
16,860
528.2 16,076 89,119
18,420
Device Routing
Invert
Outlet Devices
#1 Primary
895.00'
30.0" Round Culvert
L= 42.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 895.00' / 894.00' S= 0.0238 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections,
Flow Area= 4.91 sf
#2 Device 1
899.50'
2.0" Vert. Orifice/Grate C= 0.600
#3 Device 1
900.50'
36.0" W x 3.0" H Vert. e X 4.00 C= 0.600
#4 Device 1
901.75'
16.0' long x 0.5' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00
Coef. (English) 2.80 2.92 3.08 3.30 3.32
Primary OutFlow Max=34.84 cfs @ 12.19 hrs HW=902.24' (Free Discharge)
L1=Culvert (Passes 34.84 cfs of 57.84 cfs potential flow)
12=Orifice/Grate (Orifice Controls 0.17 cfs @ 7.85 fps)
3=e (Orifice Controls 18.34 cfs @ 6.11 fps)
4= Broad -Crested Rectangular Weir (Weir Controls 16.33 cfs @ 2.09 fps)

Wetpond NOAA 24-hr 8 10-Year Rainfall=5.09"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 30
55
50
45
40
35
u 30
FOL 25
20
15
10
Pond 3P: Wet Pond
Hydrograph
--T--- I - - - T--T- - -I--- ---I-- - 50.01 cfs --------T--------T--
InflowArea=$.186-a. -1--
-Pew-FlO-v�9-Q225''---- -
-Storage-61,99-9-E# - 35.63 cfs
-I- - -
-
-T------T--T---
-
C
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Time (hours)
r--
Inflow
❑ Primary

Wetpond NOAA 24-hr 8 10-Year Rainfall=5.09"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 31
Hydrograph for Pond 3P: Wet Pond
Time
Inflow
Storage
Elevation
Primary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
0.00
0.00
28,561
899.50
0.00
0.60
0.00
28,561
899.50
0.00
1.20
0.00
28,561
899.50
0.00
1.80
0.00
28,561
899.50
0.00
2.40
0.05
28,605
899.50
0.00
3.00
0.10
28,768
899.52
0.00
3.60
0.16
29,042
899.55
0.01
4.20
0.21
29,419
899.59
0.01
4.80
0.26
29,887
899.64
0.02
5.40
0.31
30,434
899.69
0.03
6.00
0.35
31,058
899.75
0.04
6.60
0.44
31,807
899.82
0.05
7.20
0.54
32,744
899.91
0.06
7.80
0.65
33,884
900.02
0.07
8.40
0.75
35,236
900.14
0.08
9.00
0.87
36,806
900.28
0.09
9.60
1.22
38,840
900.45
0.10
10.20
1.60
40,540
900.60
1.32
10.80
2.48
41,017
900.64
2.13
11.40
4.91
42,078
900.73
4.28
12.00
28.59
50,390
901.39
12.79
12.60
6.58
51,714
901.50
13.61
13.20
3.11
42,211
900.74
4.57
13.80
1.91
41,016
900.64
2.13
14.40
1.53
40,728
900.61
1.64
15.00
1.14
40,502
900.59
1.25
15.60
0.99
40,366
900.58
1.02
16.20
0.89
40,294
900.58
0.93
16.80
0.79
40,195
900.57
0.84
17.40
0.69
40,091
900.56
0.74
18.00
0.60
39,987
900.55
0.65
18.60
0.56
39,913
900.54
0.58
19.20
0.53
39,880
900.54
0.55
19.80
0.51
39,853
900.54
0.52

Wetpond NOAA 24-hr 8 10-Year Rainfall=5.09"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 32
Elevation Primary
(feet)
(cfs)
895.00
0.00
895.10
0.00
895.20
0.00
895.30
0.00
895.40
0.00
895.50
0.00
895.60
0.00
895.70
0.00
895.80
0.00
895.90
0.00
896.00
0.00
896.10
0.00
896.20
0.00
896.30
0.00
896.40
0.00
896.50
0.00
896.60
0.00
896.70
0.00
896.80
0.00
896.90
0.00
897.00
0.00
897.10
0.00
897.20
0.00
897.30
0.00
897.40
0.00
897.50
0.00
897.60
0.00
897.70
0.00
897.80
0.00
897.90
0.00
898.00
0.00
898.10
0.00
898.20
0.00
898.30
0.00
898.40
0.00
898.50
0.00
898.60
0.00
898.70
0.00
898.80
0.00
898.90
0.00
899.00
0.00
899.10
0.00
899.20
0.00
899.30
0.00
899.40
0.00
899.50
0.00
899.60
0.01
899.70
0.04
899.80
0.05
899.90
0.06
900.00
0.07
900.10
0.08
900.20
0.08
Stage -Discharge for Pond 3P: Wet Pond
Elevation Primary
(feet)
(cfs)
900.30
0.09
900.40
0.09
900.50
0.10
900.60
1.32
900.70
3.56
900.80
6.01
900.90
7.63
901.00
8.93
901.10
10.06
901.20
11.07
901.30
11.99
901.40
12.84
901.50
13.65
901.60
14.40
901.70
15.12
901.80
16.31
901.90
19.07
902.00
22.76
902.10
27.28
902.20
32.59
902.30
38.70
902.40
45.70
902.50
53.68
902.60
59.56
902.70
60.03
902.80
60.49
902.90
60.95
903.00
61.41
903.10
61.86
903.20
62.31
903.30
62.76
903.40
63.20
903.50
63.64
903.60
64.08
903.70
64.51
903.80
64.94
903.90
65.37
904.00
65.80

Wetpond NOAA 24-hr 8 10-Year Rainfall=5.09"
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 33
Stage -Area -Storage for Pond 3P: Wet Pond
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
895.00
4,145
0
895.10
4,223
418
895.20
4,301
845
895.30
4,380
1,279
895.40
4,460
1,721
895.50
4,540
2,171
895.60
4,621
2,629
895.70
4,703
3,095
895.80
4,786
3,569
895.90
4,869
4,052
896.00
4,953
4,543
896.10
5,065
5,044
896.20
5,178
5,556
896.30
5,292
6,079
896.40
5,407
6,614
896.50
5,524
7,161
896.60
5,642
7,719
896.70
5,761
8,289
896.80
5,881
8,871
896.90
6,003
9,466
897.00
6,126
10,072
897.10
6,215
10,689
897.20
6,306
11,315
897.30
6,396
11,950
897.40
6,488
12,595
897.50
6,580
13,248
897.60
6,673
13,911
897.70
6,766
14,582
897.80
6,860
15,264
897.90
6,955
15,954
898.00
7,050
16,655
898.10
7,145
17,364
898.20
7,240
18,084
898.30
7,336
18,812
898.40
7,432
19,551
898.50
7,529
20,299
898.60
7,627
21,057
898.70
7,725
21,824
898.80
7,824
22,602
898.90
7,924
23,389
899.00
8,024
24,186
899.10
8,308
25,003
899.20
8,597
25,848
899.30
8,891
26,723
899.40
9,190
27,627
899.50
9,494
28,561
899.60
9,803
29,526
899.70
10,117
30,522
899.80
10,436
31,549
899.90
10,759
32,609
900.00
11,088
33,701
900.10
11,212
34,816
900.20
11,337
35,944
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
900.30
11,463
37,084
900.40
11,589
38,236
900.50
11,716
39,402
900.60
11,844
40,579
900.70
11,972
41,770
900.80
12,101
42,974
900.90
12,231
44,190
901.00
12,361
45,420
901.10
12,502
46,663
901.20
12,643
47,920
901.30
12,786
49,192
901.40
12,929
50,478
901.50
13,073
51,778
901.60
13,217
53,092
901.70
13,363
54,421
901.80
13,509
55,765
901.90
13,656
57,123
902.00
13,804
58,496
902.10
13,951
59,884
902.20
14,098
61,286
902.30
14,246
62,703
902.40
14,395
64,135
902.50
14,544
65,582
902.60
14,695
67,044
902.70
14,846
68,521
902.80
14,998
70,013
902.90
15,151
71,521
903.00
15,304
73,043
903.10
15,456
74,581
903.20
15,609
76,135
903.30
15,763
77,703
903.40
15,917
79,287
903.50
16,073
80,887
903.60
16,229
82,502
903.70
16,385
84,133
903.80
16,543
85,779
903.90
16,701
87,441
904.00
16,860
89,119

Wetpond NOAA 24-hr 8 100-Year Rainfall= 7.69 "
Prepared by {enter your company name here} Printed 2/22/2019
HvdroCAD® 10.00-21 s/n 05338 © 2018 HvdroCAD Software Solutions LLC Paae 34
Time span=0.00-20.00 hrs, dt=0.06 hrs, 334 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment1S: Pre -Development Runoff Area=356,530 sf 0.00% Impervious Runoff Depth>5.04"
Tc=5.0 min CN=80 Runoff=63.87 cfs 3.439 of
Subcatchment2S: Post -Development Runoff Area=356,530 sf 2.16% Imperious Runoff Depth>6.90"
Tc=5.0 min CN=96 Runoff=76.34 cfs 4.705 of
Pond 3P: Wet Pond Peak Elev=902.65' Storage=67,844 cf Inflow=76.34 cfs 4.705 of
Outflow=60.87 cfs 4.440 of
Total Runoff Area = 16.370 ac Runoff Volume = 8.145 of Average Runoff Depth = 5.97"
98.92% Pervious = 16.192 ac 1.08% Impervious = 0.177 ac

Wetpond NOAA 24-hr 8 100-Year Rainfall= 7.69 "
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 35
Summary for Subcatchment 1S: Pre -Development
Runoff = 63.87 cfs @ 12.11 hrs, Volume= 3.439 af, Depth> 5.04"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-19.98 hrs, dt= 0.06 hrs
NOAA 24-hr B 100-Year Rainfall=7.69"
Area (sf) CN Description
356,530 80 >75% Grass cover, Good, HSG D
356,530 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 1S: Pre -Development
Hydrograph
70 -- r---li--------il------il------il-- -i---i -- r------------il------il-- -i---
■Runoff
--1---1---1--- L - -- L - --
--r- 63.87 cfs --- --- --
p p w
65 -r I/'-'1/'-'t,,24,hr B -i---------+--+---ii ----i------i------i--- --+---
60 1�
55
'-1D07Year-RaInfall�l.-69 r-- -- - -- --- --- --
50 _Run;off�� Aeea=356,530; sf -- ---I-- --I------I------I--- -- ---
45 Kun'6ff Vp1ume=3,43$ of--,-- -- -- 7------!------! --,---
w 40 '
35-T-x=5.-O min - - -
iL 30
25
-- r---r--r---r-- r------r--- ---r-- ---r--r--r------r------r
-- ---
20
15
10
-
-t---r--t---r--t-----t--- I --- t--- ---r--t---
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Time (hours)

Wetpond NOAA 24-hr 8 100-Year Rainfall= 7.69 "
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 36
Hydrograph for Subcatchment 1S: Pre -Development
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
0.30
0.02
0.00
0.00
0.60
0.04
0.00
0.00
0.90
0.06
0.00
0.00
1.20
0.08
0.00
0.00
1.50
0.10
0.00
0.00
1.80
0.12
0.00
0.00
2.10
0.15
0.00
0.00
2.40
0.17
0.00
0.00
2.70
0.20
0.00
0.00
3.00
0.22
0.00
0.00
3.30
0.25
0.00
0.00
3.60
0.27
0.00
0.00
3.90
0.30
0.00
0.00
4.20
0.33
0.00
0.00
4.50
0.35
0.00
0.00
4.80
0.38
0.00
0.00
5.10
0.41
0.00
0.00
5.40
0.44
0.00
0.00
5.70
0.47
0.00
0.00
6.00
0.51
0.00
0.00
6.30
0.54
0.00
0.02
6.60
0.58
0.00
0.05
6.90
0.61
0.01
0.09
7.20
0.66
0.01
0.13
7.50
0.70
0.01
0.17
7.80
0.75
0.02
0.22
8.10
0.80
0.03
0.27
8.40
0.85
0.04
0.33
8.70
0.91
0.06
0.39
9.00
0.96
0.07
0.45
9.30
1.03
0.09
0.59
9.60
1.11
0.12
0.75
9.90
1.19
0.15
0.94
10.20
1.29
0.19
1.15
10.50
1.40
0.24
1.38
10.80
1.54
0.31
2.04
11.10
1.73
0.40
3.03
11.40
2.00
0.56
4.73
11.70
2.45
0.85
9.60
12.00
3.64
1.75
34.27
12.30
5.24
3.10
19.85
12.60
5.69
3.51
8.96
12.90
5.96
3.75
6.11
13.20
6.15
3.92
4.30
13.50
6.29
4.04
3.25
13.80
6.40
4.14
2.66
14.10
6.50
4.23
2.39
14.40
6.58
4.31
2.13
14.70
6.66
4.38
1.87
15.00
6.73
4.44
1.60
15.30
6.78
4.50
1.45
15.60
6.84
4.55
1.38
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
15.90
6.89
4.59
1.31
16.20
6.94
4.64
1.25
16.50
6.99
4.68
1.18
16.80
7.03
4.73
1.11
17.10
7.08
4.76
1.04
17.40
7.11
4.80
0.97
17.70
7.15
4.83
0.91
18.00
7.18
4.86
0.84
18.30
7.22
4.89
0.80
18.60
7.25
4.92
0.78
18.90
7.28
4.95
0.77
19.20
7.31
4.98
0.75
19.50
7.34
5.00
0.74
19.80
7.36
5.03
0.72

Wetpond NOAA 24-hr 8 100-Year Rainfall= 7.69 "
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 37
Summary for Subcatchment 2S: Post -Development
Runoff = 76.34 cfs @ 12.11 hrs, Volume= 4.705 af, Depth> 6.90"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-19.98 hrs, dt= 0.06 hrs
NOAA 24-hr B 100-Year Rainfall=7.69"
Area (sf) CN Description
348,812
96 Gravel surface, HSG D
718
98 Concrete Sidewalk, HSG D
7,000
98 Roofs, HSG D
356,530
96 Weighted Average
348,812
97.84% Pervious Area
7,718
2.16% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 2S: Post -Development
Hydrograph
--L------L--- '--- L--- '--- L---' --- I J---L------ L------L
--L--- ■Runoff
--- ---'----
75 _I Q-- -- ----
76.34 cfs
AA ----T---I------T---I--
70
65
60 ' -Ru n;offl `Aeea=356,530; sf''
+ , - - - - -
55 _Qttn'Ioff Vp]u'me'='�F.10$-af--y---I'II
1�
w 50 - L------L------L---'- -L---'---L--L---'-
45 Run ---- DeDth>6.90"__'I---LL
--------
40
35
-HIV=96�---I---;---I---;---I---,+--+---��
30 --L---'---L------L---'---L------L--L---'-
25
-------------------- ------- -----------
20
-- ------+---r--+------r------r------I-
15-------+------L-------------�---� -
10
------------------------------------- ---
5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Time (hours)

Wetpond NOAA 24-hr 8 100-Year Rainfall= 7.69 "
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 38
Hydrograph for Subcatchment 2S: Post -Development
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
0.30
0.02
0.00
0.00
0.60
0.04
0.00
0.00
0.90
0.06
0.00
0.00
1.20
0.08
0.00
0.00
1.50
0.10
0.00
0.04
1.80
0.12
0.00
0.09
2.10
0.15
0.01
0.15
2.40
0.17
0.02
0.20
2.70
0.20
0.02
0.24
3.00
0.22
0.03
0.29
3.30
0.25
0.05
0.33
3.60
0.27
0.06
0.37
3.90
0.30
0.07
0.41
4.20
0.33
0.09
0.45
4.50
0.35
0.11
0.49
4.80
0.38
0.13
0.52
5.10
0.41
0.15
0.56
5.40
0.44
0.17
0.59
5.70
0.47
0.19
0.62
6.00
0.51
0.21
0.65
6.30
0.54
0.24
0.73
6.60
0.58
0.27
0.80
6.90
0.61
0.30
0.88
7.20
0.66
0.33
0.96
7.50
0.70
0.37
1.04
7.80
0.75
0.41
1.11
8.10
0.80
0.45
1.20
8.40
0.85
0.50
1.28
8.70
0.91
0.55
1.36
9.00
0.96
0.60
1.44
9.30
1.03
0.66
1.71
9.60
1.11
0.73
1.99
9.90
1.19
0.81
2.29
10.20
1.29
0.90
2.58
10.50
1.40
1.00
2.88
10.80
1.54
1.13
3.95
11.10
1.73
1.31
5.39
11.40
2.00
1.57
7.69
11.70
2.45
2.01
14.09
12.00
3.64
3.18
43.86
12.30
5.24
4.77
22.61
12.60
5.69
5.22
10.00
12.90
5.96
5.49
6.76
13.20
6.15
5.68
4.73
13.50
6.29
5.82
3.56
13.80
6.40
5.92
2.91
14.10
6.50
6.02
2.61
14.40
6.58
6.11
2.32
14.70
6.66
6.19
2.03
15.00
6.73
6.25
1.73
15.30
6.78
6.31
1.57
15.60
6.84
6.36
1.50
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
15.90
6.89
6.42
1.42
16.20
6.94
6.47
1.35
16.50
6.99
6.51
1.27
16.80
7.03
6.56
1.20
17.10
7.08
6.60
1.12
17.40
7.11
6.64
1.05
17.70
7.15
6.67
0.98
18.00
7.18
6.71
0.90
18.30
7.22
6.74
0.86
18.60
7.25
6.77
0.84
18.90
7.28
6.80
0.83
19.20
7.31
6.83
0.81
19.50
7.34
6.86
0.79
19.80
7.36
6.89
0.77

Wetpond NOAA 24-hr B 100-Year Rainfall= 7.69 "
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 39
Summary for Pond 3P: Wet Pond
Inflow Area = 8.185 ac, 2.16% Impervious, Inflow Depth > 6.90" for 100-Year event
Inflow = 76.34 cfs @ 12.11 hrs, Volume= 4.705 of
Outflow = 60.87 cfs @ 12.15 hrs, Volume= 4.440 af, Atten= 20%, Lag= 2.4 min
Primary = 60.87 cfs @ 12.15 hrs, Volume= 4.440 of
Routing by Stor-Ind method, Time Span= 0.00-19.98 hrs, dt= 0.06 hrs
Starting Elev= 899.50' Surf.Area= 9,494 sf Storage= 28,561 cf
Peak Elev= 902.65' @ 12.16 hrs Surf.Area= 14,777 sf Storage= 67,844 cf (39,283 cf above start)
Flood Elev= 903.00' Surf.Area= 15,304 sf Storage= 73,043 cf (44,483 cf above start)
Plug -Flow detention time= 108.0 min calculated for 3.773 of (80% of inflow)
Center -of -Mass det. time= 32.0 min ( 757.9 - 725.9 )
Volume Invert
#1 895.00'
Avail.
e Description
89,119 cf Custom Stage Data (Irregular)Listed below (Recalc)
Elevation
Surf.Area Perim. Inc.Store Cum.Store
Wet.Area
(feet)
(sq-ft)
(feet) (cubic -feet) (cubic -feet)
(sq-ft)
895.00
4,145
328.1 0 0
4,145
896.00
4,953
374.2 4,543 4,543
6,745
897.00
6,126
390.0 5,529 10,072
7,779
898.00
7,050
400.0 6,583 16,655
8,522
899.00
8,024
424.7 7,532 24,186
10,194
900.00
11,088
456.2 9,515 33,701
12,446
901.00
12,361
471.7 11,719 45,420
13,681
902.00
13,804
490.5 13,076 58,496
15,199
903.00
15,304
509.4 14,548 73,043
16,784
904.00
16,860
528.2 16,076 89,119
18,420
Device Routing
Invert
Outlet Devices
#1 Primary
895.00'
30.0" Round Culvert
L= 42.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 895.00' / 894.00' S= 0.0238 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections,
Flow Area= 4.91 sf
#2 Device 1
899.50'
2.0" Vert. Orifice/Grate C= 0.600
#3 Device 1
900.50'
36.0" W x 3.0" H Vert. e X 4.00 C= 0.600
#4 Device 1
901.75'
16.0' long x 0.5' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00
Coef. (English) 2.80 2.92 3.08 3.30 3.32
Primary OutFlow Max=59.65 cfs @ 12.15 hrs HW=902.62' (Free Discharge)
L1=Culvert (Inlet Controls 59.65 cfs @ 12.15 fps)
12=Orifice/Grate (Passes < 0.18 cfs potential flow)
3=e (Passes < 20.40 cfs potential flow)
4= Broad -Crested Rectangular Weir (Passes < 42.88 cfs potential flow)

Wetpond NOAA 24-hr 8 100-Year Rainfall= 7.69 "
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 40
Pond 3P: Wet Pond
Hydrograph
85
-- ------ -- ------ -- ------ -- --
76.34 CfS
------
--
------ --
■Inflow
❑ Primary
80
-- ------ -/-�------------------ ---------
---------
--
75
IIr
- - - - - - - - - - - - - - - - - - - - -,- - - -
y
lie k v 9 �.6v
-
- - - - -70
- - - -
- - - - - - - - - - -
65
60.87 cfs
60
-',-
_Sto'rage"-67;844-cf -
-
55
50
N
3
0 40
--------T--T------T--T------Ir- -T -- --T--
T------T--;------T--
35
30
7�---F T�---
20
-- --- -- ------�---------- ------�---
------�---
--
15
10
�4I
--r---i---r--r---i---r--r---i---r--t-- -- --r---r--r--r---i---r--
I I I I I I I I I
5
0
0 1
2 3 4 5 6 7 8 9 10 11 12 13 14
15 16
17
18 19
Time (hours)

Wetpond NOAA 24-hr 8 100-Year Rainfall= 7.69 "
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 41
Hydrograph for Pond 3P: Wet Pond
Time
Inflow
Storage
Elevation
Primary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
0.00
0.00
28,561
899.50
0.00
0.60
0.00
28,561
899.50
0.00
1.20
0.00
28,561
899.50
0.00
1.80
0.09
28,643
899.51
0.00
2.40
0.20
28,950
899.54
0.01
3.00
0.29
29,456
899.59
0.01
3.60
0.37
30,129
899.66
0.03
4.20
0.45
30,946
899.74
0.04
4.80
0.52
31,899
899.83
0.05
5.40
0.59
32,981
899.93
0.06
6.00
0.65
34,182
900.04
0.07
6.60
0.80
35,584
900.17
0.08
7.20
0.96
37,293
900.32
0.09
7.80
1.11
39,321
900.49
0.10
8.40
1.28
40,422
900.59
1.11
9.00
1.44
40,586
900.60
1.39
9.60
1.99
40,846
900.62
1.84
10.20
2.58
41,184
900.65
2.42
10.80
3.95
41,723
900.70
3.49
11.40
7.69
43,310
900.83
6.46
12.00
43.86
57,932
901.96
21.19
12.60
10.00
55,027
901.75
15.43
13.20
4.73
44,423
900.92
7.87
13.80
2.91
41,580
900.68
3.18
14.40
2.32
41,218
900.65
2.48
15.00
1.73
40,878
900.63
1.89
15.60
1.50
40,672
900.61
1.54
16.20
1.35
40,583
900.60
1.39
16.80
1.20
40,496
900.59
1.24
17.40
1.05
40,410
900.59
1.09
18.00
0.90
40,322
900.58
0.96
18.60
0.84
40,229
900.57
0.87
19.20
0.81
40,182
900.57
0.83
19.80
0.77
40,142
900.56
0.79

Wetpond NOAA 24-hr 8 100-Year Rainfall= 7.69 "
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 42
Elevation Primary
(feet)
(cfs)
895.00
0.00
895.10
0.00
895.20
0.00
895.30
0.00
895.40
0.00
895.50
0.00
895.60
0.00
895.70
0.00
895.80
0.00
895.90
0.00
896.00
0.00
896.10
0.00
896.20
0.00
896.30
0.00
896.40
0.00
896.50
0.00
896.60
0.00
896.70
0.00
896.80
0.00
896.90
0.00
897.00
0.00
897.10
0.00
897.20
0.00
897.30
0.00
897.40
0.00
897.50
0.00
897.60
0.00
897.70
0.00
897.80
0.00
897.90
0.00
898.00
0.00
898.10
0.00
898.20
0.00
898.30
0.00
898.40
0.00
898.50
0.00
898.60
0.00
898.70
0.00
898.80
0.00
898.90
0.00
899.00
0.00
899.10
0.00
899.20
0.00
899.30
0.00
899.40
0.00
899.50
0.00
899.60
0.01
899.70
0.04
899.80
0.05
899.90
0.06
900.00
0.07
900.10
0.08
900.20
0.08
Stage -Discharge for Pond 3P: Wet Pond
Elevation Primary
(feet)
(cfs)
900.30
0.09
900.40
0.09
900.50
0.10
900.60
1.32
900.70
3.56
900.80
6.01
900.90
7.63
901.00
8.93
901.10
10.06
901.20
11.07
901.30
11.99
901.40
12.84
901.50
13.65
901.60
14.40
901.70
15.12
901.80
16.31
901.90
19.07
902.00
22.76
902.10
27.28
902.20
32.59
902.30
38.70
902.40
45.70
902.50
53.68
902.60
59.56
902.70
60.03
902.80
60.49
902.90
60.95
903.00
61.41
903.10
61.86
903.20
62.31
903.30
62.76
903.40
63.20
903.50
63.64
903.60
64.08
903.70
64.51
903.80
64.94
903.90
65.37
904.00
65.80

Wetpond NOAA 24-hr 8 100-Year Rainfall= 7.69 "
Prepared by {enter your company name here} Printed 2/22/2019
HydroCAD® 10.00-21 s/n 05338 © 2018 HydroCAD Software Solutions LLC Page 43
Stage -Area -Storage for Pond 3P: Wet Pond
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
895.00
4,145
0
895.10
4,223
418
895.20
4,301
845
895.30
4,380
1,279
895.40
4,460
1,721
895.50
4,540
2,171
895.60
4,621
2,629
895.70
4,703
3,095
895.80
4,786
3,569
895.90
4,869
4,052
896.00
4,953
4,543
896.10
5,065
5,044
896.20
5,178
5,556
896.30
5,292
6,079
896.40
5,407
6,614
896.50
5,524
7,161
896.60
5,642
7,719
896.70
5,761
8,289
896.80
5,881
8,871
896.90
6,003
9,466
897.00
6,126
10,072
897.10
6,215
10,689
897.20
6,306
11,315
897.30
6,396
11,950
897.40
6,488
12,595
897.50
6,580
13,248
897.60
6,673
13,911
897.70
6,766
14,582
897.80
6,860
15,264
897.90
6,955
15,954
898.00
7,050
16,655
898.10
7,145
17,364
898.20
7,240
18,084
898.30
7,336
18,812
898.40
7,432
19,551
898.50
7,529
20,299
898.60
7,627
21,057
898.70
7,725
21,824
898.80
7,824
22,602
898.90
7,924
23,389
899.00
8,024
24,186
899.10
8,308
25,003
899.20
8,597
25,848
899.30
8,891
26,723
899.40
9,190
27,627
899.50
9,494
28,561
899.60
9,803
29,526
899.70
10,117
30,522
899.80
10,436
31,549
899.90
10,759
32,609
900.00
11,088
33,701
900.10
11,212
34,816
900.20
11,337
35,944
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
900.30
11,463
37,084
900.40
11,589
38,236
900.50
11,716
39,402
900.60
11,844
40,579
900.70
11,972
41,770
900.80
12,101
42,974
900.90
12,231
44,190
901.00
12,361
45,420
901.10
12,502
46,663
901.20
12,643
47,920
901.30
12,786
49,192
901.40
12,929
50,478
901.50
13,073
51,778
901.60
13,217
53,092
901.70
13,363
54,421
901.80
13,509
55,765
901.90
13,656
57,123
902.00
13,804
58,496
902.10
13,951
59,884
902.20
14,098
61,286
902.30
14,246
62,703
902.40
14,395
64,135
902.50
14,544
65,582
902.60
14,695
67,044
902.70
14,846
68,521
902.80
14,998
70,013
902.90
15,151
71,521
903.00
15,304
73,043
903.10
15,456
74,581
903.20
15,609
76,135
903.30
15,763
77,703
903.40
15,917
79,287
903.50
16,073
80,887
903.60
16,229
82,502
903.70
16,385
84,133
903.80
16,543
85,779
903.90
16,701
87,441
904.00
16,860
89,119