SW6240104_Stormwater Report_20240124

Stormwater Narrative & Calculations
Bloom Subdivision - South
Phase 1
Spence Mill Road
Fuquay-Varina, 27526
Harnett County, North Carolina
January 10, 2024
Prepared for:
mattamyHomEs
Mattamy Homes, LLC
11000 Regency Parkway
Suite 110
Cary, NC 27518
Prepared By:
4?fr* MCK[M&CREED
4300 Edwards Mill Rd, Suite 200
Raleigh, North Carolina 27612 Di•itally signe• by
Phone: [phone] .am
Fax: [phone] rtt) n
_ 1.4:34; Q,1O '00'
-�' 044644 'z-
M&C Project No. 04739-0014 9•'•FN F` •• ��

PROJECT DESCRIPTION
This project involves the construction of the first 39 lots of a 118 lot subdivision in
Harnett County, North Carolina with associated roadway, utility, and storm
drainage infrastructure. While the plans only include infrastructure installation for
39 lots, stormwater and land disturbance will be permitted for the entire site.
There will be five public roads installed with 2 connections to Spence Mill Road
(Laceneck Lane & Bronzewing Lane). All roads have a 50' right-of-way with
roadside drainage ditches.
The proposed post development impervious area is approximately 16.8 acres.
The built-upon area is 11 .99% of the total acreage.
SITE DESCRIPTION
The existing site is approximately 140.59 acres and is vacant. The site was
previously used for agriculture.
The site lies within the Cape Fear River basin and a high quality watershed. This
site will be developed as a low density subdivision with less than 12% impervious
and will utilize vegetated stormwater conveyance methods in accordance with
the high quality watershed regulations.
This site contains wetlands and an existing pond. There will be minor fill of some
wetland areas, less than 0.1 acres, which will be permitted with the Army Corps
of Engineers prior to construction.
The project site is located in Other Areas Zone "X", areas determined to be
outside of the 500-year flood area per FEMA FIRM Panel 3720065400J with an
effective date of 10/3/2006.
The topography of the site suggests that the entire site drains to the south into
undisturbed jurisdictional streams that drain to Hector Creek (WS-IV; HQW).
STORMWATER CONTROL STRUCTURES
In accordance with regulations for a project located within a high quality
watershed, this project will not require a stormwater control measure as it
maintains less than 12% impervious and will utilize vegetated conveyance
methods. Stormwater will be routed via vegetated road side swales and storm
culverts which will discharge to riprap dissipator pads.

STORMWATER CALCULATIONS
HY-8, version 7.70.2.0, was utilized to size the culverts in accordance with NCDOT
design criteria. The stormwater flow to each pipe was determined by
delineating the drainage area to each pipe, calculating the composite c-value,
and getting the rainfall intensity from the National Oceanic and Atmospheric
Administration (NOAA) precipitation data for the project location. The rational
equation was then utilized to determine the flows for the 2 year, 10 year, and 25
year storm events. The pipes were sized to pass the 10 year storm event with a
headwater to diameter ratio (HW/D) of 1 .2 or less.
Drainage swales and lining materials were sized utilizing the tractive force
method, as outlined in the North Carolina Erosion and Sediment Control
Planning and Design Manual. The stormwater flow for each swale was
determined by the rational method for the 10 year storm event, the critical
channel dimensions, Mannings n-values, and slopes were determined, and the
lining material was adjusted until it was adequate. While vegetated channels
were utilized as much as possible, there are several areas where riprap lining will
be required. However, all pipe and ditch outfalls will discharge to riprap
dissipator pads to disperse the flow.

STORMWATER SUPPORTING
CALCULATIONS/DOCUMENTS
• NOAA PRECIPITATION DATA
• CULVERT SIZING CALCULATIONS
• SWALE CALCULATIONS
• RIPRAP APRON CALCULATIONS

7/6/23,6:01 PM Precipitation Frequency Data Server
NOAA Atlas 14,Volume 2,Version 3
.,eo % Location name: Fuquay Varina,North Carolina, r,,,,-, „
.I xp USA* none
IL3Latitude:35.5272°,Longitude: -78.8224°
I.Foss' Elevation:360 ft** V
'source:ESRI ,(.91
**source:USGS
POINT PRECIPITATION FREQUENCY ESTIMATES
G.M.Bonnin,D.Martin,B.Lin,T.Parzybok,M.Yekta,and D.Riley
NOAA,National Weather Service,Silver Spring,Maryland
PF tabular I PF graphical I Maps & aerials
PF tabular
PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches/hour)1
Average recurrence interval(years)
Duration
1 2 5 10 25 50 100 200 500 1000
5-min 5.06 5.93 6.84 7.60 8.42 9.05 9.61 10.1 10.7 11.2
(4.62-5.56) (5.42-6.50) (6.25-7.50) (6.92-8.33) (7.64-9.23) (8.18-9.89)_ (8.65-10.5) (9.06-11.1) (9.50-11.7) 1 (9.86-12.3)
10-min 4.04 4.74 5.48 6.07 6.71 7.20 7.64 8.02 8.48 8.84
(3.69-4.43) (4.33-5.21) (5.01-6.01) (5.54-6.66) (6.10-7.35) (6.52-7.87)_ (6.87-8.35) (7.18-8.78) (7.52-9.28) (7.77-9.68)
15-min 3.37 3.98 4.62 5.12 5.67 6.08 6.44 6.75 7.12 7.40
(3.08-3.70) (3.63-4.36) (4.22-5.07) (4.67-5.61) (5.15-6.21) (5.50-6.65) (5.79-7.03) (6.04-7.38)_ (6.31-7.78) (6.50-8.10)
30-min 2.31 2.74 3.28 3.71 4.20 4.58 4.93 5.25 5.66 5.99
(2.11-2.53) (2.51-3.01) (3.00-3.60) (3.38-4.07) (3.81-4.60) (4.14-5.01) (4.43-5.39) (4.70-5.75) (5.02-6.19) (5.26-6.56)
60-min 1.44 1.72 2.10 2.42 2.80 3.10 3.39 3.68 4.06 4.37
(1.32-1.58) (1.57-1.89) (1.92-2.31) (2.20-2.65) (2.54-3.06) (2.81-3.39) (3.05-3.71) (3.30-4.03) (3.60-4.44) (3.84-4.79)
2-hr 0.846 1.02 1.26 1.46 1.72 1.94 2.15 2.36 2.65 2.90
(0.767-0.938) (0.925-1.13) (1.14-1.40) (1.32-1.62) (1.55-1.90) (1.73-2.14) (1.91-2.37) (2.09-2.61) (2.32-2.93)_ (2.51-3.20)
3-hr 0.597 0.718 0.893 1.04 1.24 1.41 1.58 1.76 2.01 2.22
(0.542-0.663) (0.654-0.797) (0.810-0.990) (0.946-1.16) (1.12-1.37) (1.26-1.56)_ (1.40-1.75) (1.55-1.94) (1.75-2.22) (1.91-2.46)
6-hr 0.357 0.430 0.535 0.626 0.749 0.853 0.960 1.07 1.23 1.37
(0.326-0.394) (0.392-0.474) (0.487-0.589) (0.569-0.690) (0.675-0.823) (0.765-0.936) (0.853-1.05) (0.944-1.18) (1.07-1.35) (1.17-1.50)
12-hr 0.209 0.251 0.314 0.370 0.446 I 0.511 0.579 0.652 0.755 0.845
(0.190-0.231) (0.229-0.278) (0.286-0.348) (0.335-0.409) (0.400-0.490) (0.456-0.561) (0.511-0.634) (0.569-0.714) (0.648-0.827) (0.715-0.925)
24-hr 0.123 0.148 0.188 0.219 0.261 0.296 0.331 0.368 0.419 0.459
(0.113-0.133) (0.137-0.161) (0.173-0.203) (0.202-0.236) (0.240-0.283) (0.271-0.320) (0.303-0.358) (0.335-0.398)1 (0.379-0.453) (0.414-0.498)
2-day 0.071 0.086 0.107 0.125 0.148 0.167 0.187 0.207 0.235 0.257
(0.066-0.077) (0.079-0.092) (0.099-0.116) (0.115-0.135) (0.136-0.160) (0.153-0.181) (0.171-0.202) (0.188-0.224) (0.213-0.254) (0.232-0.279)
3-day 0.050 0.060 0.075 0.087 0.103 0.116 0.130 0.144 0.163 0.178
(0.046-0.054) (0.056-0.065) (0.070-0.081) (0.080-0.094) (0.095-0.111) (0.107-0.125) (0.119-0.140) (0.131-0.155) (0.148-0.176) (0.161-0.192)
4-day 0.039 0.047 0.059 0.068 0.081 0.091 0.101 0.112 0.126 0.138
(0.037-0.042) (0.044-0.051) (0.055-0.063) (0.063-0.073) (0.075-0.087) (0.084-0.097) (0.093-0.109) (0.102-0.120) (0.115-0.136) (0.125-0.149)
7-day 0.026 0.031 0.038 0.044 0.051 I 0.058 0.064 0.070 I 0.079 0.086
(0.024-0.028) (0.029-0.033) (0.035-0.041) (0.041-0.047) (0.048-0.055) (0.053-0.062) (0.059-0.069)1(0.065-0.076) (0.072-0.085) (0.079-0.093)
10-day 0.021 0.025 0.030 0.034 0.039 0.044 0.048 0.053 0.059 0.063
(0.019-0.022) (0.023-0.026) (0.028-0.032) (0.032-0.036)(0.037-0.042)1(0.041-0.047) (0.045-0.051) (0.049-0.056)1 (0.054-0.063) (0.058-0.068)
20-day 0.014 0.016 0.019 0.022 0.025 0.028 0.030 0.033 0.037 0.039
(0.013-0.015) (0.015-0.017) (0.018-0.021) (0.020-0.023) (0.023-0.027) (0.026-0.030) (0.028-0.032) (0.030-0.035) (0.034-0.039) (0.036-0.042)
30-day 0.011 0.013 0.016 0.017 0.020 I 0.022 0.023 0.025 1 0.028 0.029
(0.011-0.012) (0.012-0.014) (0.015-0.017) (0.016-0.019) (0.018-0.021)1(0.020-0.023) (0.022-0.025) (0.023-0.027) (0.025-0.030) (0.027-0.032)
45-day 0.009 0.011 0.013 0.014 0.016 0.017 0.019 0.020 0.022 0.023
(0.009-0.010) (0.011-0.012) (0.012-0.014) (0.013-0.015) (0.015-0.017) (0.016-0.018) (0.017-0.020) (0.019-0.021) (0.020-0.023) (0.021-0.024)
60-day 0.008 0.010 0.011 0.013 0.014 0.015 0.016 0.017 0.018 0.019
(0.008-0.009) (0.009-0.011) (0.011-0.012) (0.012-0.013) (0.013-0.015) (0.014-0.016) (0.015-0.017) (0.016-0.018) (0.017-0.019) (0.018-0.021)
1 Precipitation frequency(PF)estimates in this table are based on frequency analysis of partial duration series(PDS).
Numbers in parenthesis are PF estimates at lower and upper bounds of the 90%confidence interval.The probability that precipitation frequency estimates(for
a given duration and average recurrence interval)will be greater than the upper bound(or less than the lower bound)is 5%.Estimates at upper bounds are not
checked against probable maximum precipitation(PMP)estimates and may be higher than currently valid PMP values.
Please refer to NOAAAtlas 14 document for more information.
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PF graphical
https://hdsc.nws.noaa.gov/pfds/pfds_printpage.html?lat=35.5272&Ion=-78.8224&data=intensity&units=english&series=pds 1/4

7/6/23,6:01 PM Precipitation Frequency Data Server
PDS-based intensity-duration-frequency (IDF) curves
Latitude: 35.5272°, Longitude: -78.8224°
101 Average recurrence
interval
(years)
-c
.Z' 10° - \\7\ —
\ 5
c
c \\ — 10
— zs
co — 50
y `
ro 10-1 - \ --.__ — 100
.a
— 200
V
,_ �\ — 500
` — 1000
10-2 -
r I I I I I I I I I I I I 1 I I I
E E E E E N OS u5 N 4 v vv 7 77 v 77
i N n 4 N
.�-� m $ Duration Ni - N m v V)
101 _ - -
L
C
Duration
.Z' 10° •
c — 5-min — 2-day
II
— 10-min — 3-day
c 15-nin — 4-day
0
10-1 — 30-min — 7-day
a — 60-min — 10-day
i — 2fir — 20-day
` — 3-hr — 30-day
— 6fir — 45-day
10-2 — 12-hr — 60-day
I I I I I I I — 24fir
1 2 5 10 25 50 100 200 500 1000
Average recurrence interval (years)
NOAA Atlas 14,Volume 2,Version 3 Created(GMT):Thu Jul 6 22:01:06 2023
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Maps & aerials
Small scale terrain
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7/6/23,6:01 PM Precipitation Frequency Data Server
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7/6/23,6:01 PM Precipitation Frequency Data Server
Winston-Salem
Greensboro Durham. Rocky Mount
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100km
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National Weather Service
National Water Center
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HY-8 Culvert Analysis Report
Crossing Discharge Data
Discharge Selection Method: Recurrence
Table 1-Summary of Culvert Flows at Crossing: Culvert 1
Headwater Discharge Total Culvert 1 Roadway Iterations
Elevation Names Discharge Discharge Discharge
(ft) (cfs) (cfs) (cfs)
349.12 2 year 4.27 4.27 0.00 1
349.30 10 year 5.49 5.49 0.00 1
349.38 25 year 6.06 6.06 0.00 1
352.20 Overtopping 17.66 17.66 0.00 Overtopping
Rating Curve Plot for Crossing: Culvert 1
Total Rating Curve
Crossing:Culvert 1
352.5-
352.0-
351.5-
c
0 -
351.0-
a)
ul
a�
3 350.5-
v
m
CD
350.0-
349.5-
349.0-
4 6 8 10 12 14 16 18 20
Total Discharge(cfs)

Culvert Data: Culvert 1
Table 1-Culvert Summary Table: Culvert 1
Disc Total Culv Head Inle Out Fl Nor Crit Ou Tail Outl Tail
harg Disc ert water t let o mal ical tle wate et wate
e harg Disc Eleva Con Con w Dep De t r Vel r
Nam e harg tion trol trol Ty th pth De Dept ocit Velo
es (cfs) e (ft) Dep Dep pe (ft) (ft) pth h (ft) y city
(cfs) th th (ft) (ft/ (ft/s
() (ft) s) )
2 4.27 4.27 349.1 1.12 0.0* 1- 0.48 0.7 0.4 0.00 8.45 0.00
year cfs cfs 2 S2 9 9
n
10 5.49 5.49 349.3 1.30 0.0* 1- 0.55 0.9 0.5 0.00 8.99 0.00
year cfs cfs 0 S2 0 7
n
25 6.06 6.06 349.3 1.38 0.0* 1- 0.58 0.9 0.6 0.00 9.15 0.00
year cfs cfs 8 S2 5 0
n
* Full Flow Headwater elevation is below inlet invert.
Culvert Barrel Data
Culvert Barrel Type Straight Culvert
Inlet Elevation (invert): 348.00 ft,
Outlet Elevation (invert): 346.24 ft
Culvert Length: 63.37 ft,
Culvert Slope: 0.0278

Culvert Performance Curve Plot: Culvert 1
Performance Curve
Culvert:Culvert 1
I ♦1
Inlet Control Elev Outlet Control Elev
352.5
352.0-
351.5-
A
351.0
c 350.5- —
0
_
a', 350.0-
m 349.5-
= 349.0
348.5-
348.0-_ �'I
347.5-
_ Ak-.
347.0- 1 1 I 1 1 1 1
j
4 6 8 10 12 14 16 18 20
Total Discharge(cfs)

Water Surface Profile Plot for Culvert: Culvert 1
Crossing-Culvert 1,Design Discharge - 6.1 cfs
Culvert-Culvert 1,Culvert Discharge-6.1 cfs
352.5
352.0 Z-
351.5
351.0-
350.5-
350.0-
0 349.5-_ +
Fp 349.0-__
w
348.5-
348.0
347.5-
347.0-
346.5-T.
346.0- t i l t Ill till Ill ! lilt 11 1 1 1 1 1 1 1 1 1 1 I I I I I I I I 1
-20 -10 0 10 20 30 40 50 60 70 80
Station(ft)
Site Data - Culvert 1
Site Data Option: Culvert Invert Data
Inlet Station: 0.00 ft
Inlet Elevation: 348.00 ft
Outlet Station: 63.35 ft
Outlet Elevation: 346.24 ft
Number of Barrels: 1
Culvert Data Summary- Culvert 1
Barrel Shape: Circular
Barrel Diameter: 1.50 ft
Barrel Material: Concrete
Embedment: 0.00 in
Barrel Manning's n: 0.0120

Culvert Type: Straight
Inlet Configuration: Grooved End Projecting
Inlet Depression: None
Tailwater Data for Crossing: Culvert 1
Table 2-Downstream Channel Rating Curve(Crossing: Culvert 1)
Flow(cfs) Water Surface Elev(ft) Depth (ft)
4.27 346.24 0.00
5.49 346.24 0.00
6.06 346.24 0.00
Tailwater Channel Data - Culvert 1
Tailwater Channel Option: Enter Constant Tailwater Elevation
Constant Tailwater Elevation: 346.24 ft
Roadway Data for Crossing: Culvert 1
Roadway Profile Shape: Constant Roadway Elevation
Crest Length: 10.00 ft
Crest Elevation: 352.20 ft
Roadway Surface: Paved
Roadway Top Width: 50.00 ft
Crossing Discharge Data
Discharge Selection Method: Recurrence
Table 3-Summary of Culvert Flows at Crossing:Culvert 2
Headwater Discharge Total Culvert 2 Roadway Iterations
Elevation Names Discharge Discharge Discharge
(ft) (cfs) (cfs) (cfs)
348.79 2 year 6.40 6.40 0.00 1
349.07 10 year 8.24 8.24 0.00 1
349.22 25 year 9.09 9.09 0.00 1
351.00 Overtopping 15.96 15.96 0.00 Overtopping

Rating Curve Plot for Crossing: Culvert 2
Total Rating Curve
Crossing Culvert 2
351.0-
350.5-
c
0 _
W3500-
1)
a
349.5-
349 0-
7 8 9 10 11 12 13 14 15 111 17 18
Total Discharge(cfs)
Culvert Data: Culvert 2
Table 2-Culvert Summary Table: Culvert 2
Disc Total Culv Head Inle Out Fl Nor Crit Ou Tail Outl Tail
harg Disc ert water t let o mal ical tle wate et wate
e harg Disc Eleva Con Con w Dep De t r Vel r
Nam e harg tion trol trol Ty th pth De Dept ocit Velo
es (cfs) e (ft) Dep Dep pe (ft) (ft) pth h (ft) y city
(cfs) th th (ft) (ft/ (ft/s
(ft) (ft) s) )
2 6.40 6.40 348.7 1.44 0.78 1- 0.81 0.9 0.8 0.55 6.50 3.18
year cfs cfs 9 3 S2 8 2
n
10 8.24 8.24 349.0 1.72 1.21 5- 0.96 1.1 0.9 0.63 6.88 3.40
year cfs cfs 7 7 S2 1 6
n
25 9.09 9.09 349.2 1.87 1.60 5- 1.02 1.1 1.0 0.66 7.02 3.49
year cfs cfs 2 2 S2 7 3
n

Culvert Barrel Data
Culvert Barrel Type Straight Culvert
Inlet Elevation (invert): 347.35 ft,
Outlet Elevation (invert): 346.70 ft
Culvert Length: 67.08 ft,
Culvert Slope: 0.0097
Culvert Performance Curve Plot: Culvert 2
Performance Curve
Culvert:Culvert
f ♦ l
Inlet Control Elev Outlet Control Elev
351.0- 7
i
350.5- —
7
i
i
0 350.0-
m 349.5- 7
co
349.0- A�
348.5- �r
7
_ i
_ r
348.0- rill rill rrrr t till trtr rrrt tttt tttt tttt tttt lilt ttt
6 7 8 9 10 11 12 13 14 15 16 17 18
Total Discharge(cfs)

Water Surface Profile Plot for Culvert: Culvert 2
Crossing-Culvert 2,Design Discharge-9.1 cfs
Culvert-Culvert 2,Culvert Discharge-9.1 cfs
351.0-
350.5-
350.0
349.5-_
-
c 3490-
0
a
a�
w 348 5
- imia
3480-
11111111111111111,
3475
347.0-
346 F,- 1 1 1 1 1 1 1 1 1 Jill I I I 1
20 -10 0 10 20 30 40 50 60 70 80
Station(ft)
Site Data - Culvert 2
Site Data Option: Culvert Invert Data
Inlet Station: 0.00 ft
Inlet Elevation: 347.35 ft
Outlet Station: 67.08 ft
Outlet Elevation: 346.70 ft
Number of Barrels: 1
Culvert Data Summary- Culvert 2
Barrel Shape: Circular
Barrel Diameter: 1.50 ft
Barrel Material: Concrete
Embedment: 0.00 in
Barrel Manning's n: 0.0120

Culvert Type: Straight
Inlet Configuration: Grooved End Projecting
Inlet Depression: None
Tailwater Data for Crossing: Culvert 2
Table 4-Downstream Channel Rating Curve(Crossing: Culvert 2)
Flow(cfs) Water Velocity Depth (ft) Shear(psi) Froude
Surface (ft/s) Number
Elev(ft)
6.40 347.25 0.55 3.18 0.34 0.91
8.24 347.33 0.63 3.40 0.39 0.92
9.09 347.36 0.66 3.49 0.41 0.93
Tailwater Channel Data - Culvert 2
Tailwater Channel Option:Trapezoidal Channel
Bottom Width: 2.00 ft
Side Slope (H:V): 3.00 (_:1)
Channel Slope: 0.0100
Channel Manning's n: 0.0240
Channel Invert Elevation: 346.70 ft
Roadway Data for Crossing: Culvert 2
Roadway Profile Shape: Constant Roadway Elevation
Crest Length: 10.00 ft
Crest Elevation: 351.00 ft
Roadway Surface: Paved
Roadway Top Width: 50.00 ft

Crossing Discharge Data
Discharge Selection Method: Recurrence
Table 5-Summary of Culvert Flows at Crossing:Culvert 3
Headwater Discharge Total Culvert 3 Roadway Iterations
Elevation Names Discharge Discharge Discharge
(ft) (cfs) (cfs) (cfs)
339.54 2 year 16.55 16.55 0.00 1
339.85 10 year 21.29 21.29 0.00 1
340.00 25 year 23.49 23.49 0.00 1
342.12 Overtopping 46.52 46.52 0.00 Overtopping
Rating Curve Plot for Crossing: Culvert 3
Total Rating Curve
Crossing.Culvert 3
342.5i
342.0-
341.5-
c
0 -
a
a -
w 341.0-
.& -
m
-o
co
a)
= 3405-
3400-
3395-
' I I I I I I I I I I ' l l l r l l l l t l l l l I I I I I I I !
15 20 25 30 35 40 45 50
Total Discharge(cfs)

Culvert Data: Culvert 3
Table 3-Culvert Summary Table: Culvert 3
Disc Total Culv Head Inle Out Fl Nor Crit Ou Tail Outl Tail
harg Disc ert water t let o mal ical tle wate et wate
e harg Disc Eleva Con Con w Dep De t r Vel r
Nam e harg tion trol trol Ty th pth De Dept ocit Velo
es (cfs) e (ft) Dep Dep pe (ft) (ft) pth h (ft) y city
(cfs) th th (ft) (ft/ (ft/s
(ft) (ft) s) )
2 16.55 16.55 339.5 1.94 0.0* 1- 0.75 1.3 0.8 0.00 12.0 0.00
year cfs cfs 4 S2 7 1 6
n
10 21.29 21.29 339.8 2.25 0.0* 1- 0.85 1.5 0.9 0.00 12.7 0.00
year cfs cfs 5 S2 7 3 5
n
25 23.49 23.49 340.0 2.40 0.0* 1- 0.90 1.6 0.9 0.00 13.0 0.00
year cfs cfs 0 S2 5 9 0
n
* Full Flow Headwater elevation is below inlet invert.
Culvert Barrel Data
Culvert Barrel Type Straight Culvert
Inlet Elevation (invert): 337.60 ft,
Outlet Elevation (invert): 335.14 ft
Culvert Length: 67.40 ft,
Culvert Slope: 0.0365

Culvert Performance Curve Plot: Culvert 3
Performance Curve
Culvert Culvert 3
I • l AlI
Inlet Control Elev Outlet Control Elev
342.5
342.0
341.5-
341.0-
340.5
c
(;' 3400-' --
a)
6 339.5
v 339.0—
— "
a�
=338.5—_
338.0
337.5Ar
337.0—_
ill !
l
15 20 25 30 35 40 45 50
Total Discharge(cis)

Water Surface Profile Plot for Culvert: Culvert 3
Crossing-Culvert 3,Design Discharge-23.5 cfs
Culvert-Culvert 3,Culvert Discharge-23.5 cfs
342-
341-
340-
339-
CO —
(1
> -0.)
- -----__ ___
W 338-
337-
336-
1 1 1 1 1 JJII 1 1 1 1 JJJJ JJII I I I I JJJJ JIIJ I I I 1
1
20 -10 0 10 20 30 40 50 60 70 80
Station(ft)
Site Data - Culvert 3
Site Data Option: Culvert Invert Data
Inlet Station: 0.00 ft
Inlet Elevation: 337.60 ft
Outlet Station: 67.36 ft
Outlet Elevation: 335.14 ft
Number of Barrels: 1
Culvert Data Summary- Culvert 3
Barrel Shape: Circular
Barrel Diameter: 2.50 ft
Barrel Material: Concrete
Embedment: 0.00 in
Barrel Manning's n: 0.0120

Culvert Type: Straight
Inlet Configuration: Grooved End Projecting
Inlet Depression: None
Tailwater Data for Crossing: Culvert 3
Table 6- Downstream Channel Rating Curve(Crossing: Culvert 3)
Flow(cfs) Water Surface Elev(ft) Depth (ft)
16.55 335.14 0.00
21.29 335.14 0.00
23.49 335.14 0.00
Tailwater Channel Data - Culvert 3
Tailwater Channel Option: Enter Constant Tailwater Elevation
Constant Tailwater Elevation: 335.14 ft
Roadway Data for Crossing: Culvert 3
Roadway Profile Shape: Constant Roadway Elevation
Crest Length: 10.00 ft
Crest Elevation: 342.12 ft
Roadway Surface: Paved
Roadway Top Width: 50.00 ft
Crossing Discharge Data
Discharge Selection Method: Recurrence
Table 7-Summary of Culvert Flows at Crossing:Culvert 4
Headwater Discharge Total Culvert 4 Roadway Iterations
Elevation Names Discharge Discharge Discharge
(ft) (cfs) (cfs) (cfs)
347.40 2 year 2.31 2.31 0.00 1
347.53 10 year 2.98 2.98 0.00 1
347.59 25 year 3.28 3.28 0.00 1
350.37 Overtopping 15.62 15.62 0.00 Overtopping

Rating Curve Plot for Crossing: Culvert 4
Total Rating Curve
Crossing Culvert 4
350 5-
350 0
-
349.5-
c -
0
°' 349 0-
w -
a to
-o -
348 5-
I -
3480-
347 5-
- I I I I I I III III III III III II
2 4 (LiI 8 10 12 14I 116
Total Discharge(cfs)
Culvert Data: Culvert 4
Table 4-Culvert Summary Table: Culvert 4
Disc Total Culv Head Inle Out Fl Nor Crit Ou Tail Outl Tail
harg Disc ert water t let o mal ical tle wate et wate
e harg Disc Eleva Con Con w Dep De t r Vel r
Nam e harg tion trol trol Ty th pth De Dept ocit Velo
es (cfs) e (ft) Dep Dep pe (ft) (ft) pth h (ft) y city
(cfs) th th (ft) (ft/ (ft/s
(ft) (ft) s) )
2 2.31 2.31 347.4 0.79 0.32 1- 0.55 0.5 0.5 0.25 3.96 3.36
year cfs cfs 0 1 S2 7 5
n
10 2.98 2.98 347.5 0.92 0.44 1- 0.63 0.6 0.6 0.29 4.24 3.63
year cfs cfs 3 1 S2 6 3
n
25 3.28 3.28 347.5 0.98 0.49 1- 0.66 0.6 0.6 0.30 4.35 3.73
year cfs cfs 9 5 S2 9 6
n

Culvert Barrel Data
Culvert Barrel Type Straight Culvert
Inlet Elevation (invert): 346.61 ft,
Outlet Elevation (invert): 346.30 ft
Culvert Length: 61.20 ft,
Culvert Slope: 0.0051
Culvert Performance Curve Plot: Culvert 4
Performance Curve
Culvert:Culvert 4
f ♦ l
_ Inlet Control Elev Outlet Control Elev
350.5
350.0-
7
i
i
349.5-
c i
349.0--
w - -'
348.5- i'
i
= 348.0- 7
V
347.5-
347.0--
I I I I I I I I I I I I I I I L.
4 6 8 10 12 14 16
Total Discharge(cfs)

Water Surface Profile Plot for Culvert: Culvert 4
Crossing-Culvert 4,Design Discharge-3.3 cfs
Culvert-Culvert 4,Culvert Discharge-3.3 cfs
350.5-
350.0-
349.5--
349.0-
c 3485-
0 —
c
a
LT] 3480-
347 5-
3470-
346 5-
-1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I I I I
1
-10 0 10 20 30 40 50 60 70 80
Station(ft)
Site Data - Culvert 4
Site Data Option: Culvert Invert Data
Inlet Station: 0.00 ft
Inlet Elevation: 346.61 ft
Outlet Station: 61.20 ft
Outlet Elevation: 346.30 ft
Number of Barrels: 1
Culvert Data Summary- Culvert 4
Barrel Shape: Circular
Barrel Diameter: 1.50 ft
Barrel Material: Concrete
Embedment: 0.00 in
Barrel Manning's n: 0.0120

Culvert Type: Straight
Inlet Configuration: Grooved End Projecting
Inlet Depression: None
Tailwater Data for Crossing: Culvert 4
Table 8-Downstream Channel Rating Curve(Crossing: Culvert 4)
Flow(cfs) Water Velocity Depth (ft) Shear(psi) Froude
Surface (ft/s) Number
Elev(ft)
2.31 346.55 0.25 3.36 0.41 1.34
2.98 346.59 0.29 3.63 0.48 1.36
3.28 346.60 0.30 3.73 0.50 1.37
Tailwater Channel Data - Culvert 4
Tailwater Channel Option:Trapezoidal Channel
Bottom Width: 2.00 ft
Side Slope (H:V): 3.00 (_:1)
Channel Slope: 0.0266
Channel Manning's n: 0.0240
Channel Invert Elevation: 346.30 ft
Roadway Data for Crossing: Culvert 4
Roadway Profile Shape: Constant Roadway Elevation
Crest Length: 10.00 ft
Crest Elevation: 350.37 ft
Roadway Surface: Paved
Roadway Top Width: 50.00 ft
Crossing Discharge Data
Discharge Selection Method: Recurrence

Table 9-Summary of Culvert Flows at Crossing: Culvert 5
Headwater Discharge Total Culvert 5 Roadway Iterations
Elevation Names Discharge Discharge Discharge
(ft) (cfs) (cfs) (cfs)
342.99 2 year 2.31 2.31 0.00 1
343.12 10 year 2.98 2.98 0.00 1
343.17 25 year 3.28 3.28 0.00 1
346.24 Overtopping 17.18 17.18 0.00 Overtopping
Rating Curve Plot for Crossing: Culvert 5
Total Rating Curve
Crossing:Culvert 5
346.5-
346.0-
345.5-
0 345.0-
m
a
w _
m 344.5-
3
t3 -
co
a) -
344.0-
343.5-
343.0-
1I I I I I I I I I I I I I I lam_
2 4 6 6 10 12 14 16 16
Total Discharge(cfs)

Culvert Data: Culvert 5
Table 5-Culvert Summary Table: Culvert 5
Disc Total Culv Head Inle Out Fl Nor Crit Ou Tail Outl Tail
harg Disc ert water t let o mal ical tle wate et wate
e harg Disc Eleva Con Con w Dep De t r Vel r
Nam e harg tion trol trol Ty th pth De Dept ocit Velo
es (cfs) e (ft) Dep Dep pe (ft) (ft) pth h (ft) y city
(cfs) th th (ft) (ft/ (ft/s
(ft) (ft) s) )
2 2.31 2.31 342.9 0.79 0.03 1- 0.46 0.5 0.4 0.33 5.09 2.38
year cfs cfs 9 1 S2 7 6
n
10 2.98 2.98 343.1 0.92 0.14 1- 0.52 0.6 0.5 0.37 5.43 2.56
year cfs cfs 2 9 S2 6 2
n
25 3.28 3.28 343.1 0.97 0.20 1- 0.55 0.6 0.5 0.39 5.56 2.64
year cfs cfs 7 3 S2 9 5
n
Culvert Barrel Data
Culvert Barrel Type Straight Culvert
Inlet Elevation (invert): 342.20 ft,
Outlet Elevation (invert): 341.60 ft
Culvert Length: 58.92 ft,
Culvert Slope: 0.0102

Culvert Performance Curve Plot: Culvert 5
Performance Curve
Culvert:Culvert 5
AlI
Inlet Control Elev Outlet Control Elev
346.5
346.0--
i
345.5-
V
7
345.0-
c _
i
344.5-_
w -
344.0-_
co
= 343.5-
343.0-
342.5-
- I I I I I I I I I I I I 11 i
2 4 6 8 10 12 14 16 18
Total Discharge(cfs)

Water Surface Profile Plot for Culvert: Culvert 5
Crossing-Culvert 5,Design Discharge-3.3 cfs
Culvert-Culvert 5,Culvert Discharge-3.3 cfs
346.0
345.5
345.0-
344.5
0 344.0-_
m
W 343.5-
343.0 15111111111111111
342.5
342.0-
341 5-
-1 I l l 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I I I I I I I I 1 1 1 1 JI
1
-10 0 10 20 30 40 50 e�0 70
Station(ft)
Site Data - Culvert 5
Site Data Option: Culvert Invert Data
Inlet Station: 0.00 ft
Inlet Elevation: 342.20 ft
Outlet Station: 58.92 ft
Outlet Elevation: 341.60 ft
Number of Barrels: 1
Culvert Data Summary- Culvert 5
Barrel Shape: Circular
Barrel Diameter: 1.50 ft
Barrel Material: Concrete
Embedment: 0.00 in
Barrel Manning's n: 0.0120

Culvert Type: Straight
Inlet Configuration: Grooved End Projecting
Inlet Depression: None
Tailwater Data for Crossing: Culvert 5
Table 10- Downstream Channel Rating Curve(Crossing:Culvert 5)
Flow(cfs) Water Velocity Depth (ft) Shear(psi) Froude
Surface (ft/s) Number
Elev(ft)
2.31 341.93 0.33 2.38 0.20 0.85
2.98 341.97 0.37 2.56 0.23 0.86
3.28 341.99 0.39 2.64 0.24 0.87
Tailwater Channel Data - Culvert 5
Tailwater Channel Option:Trapezoidal Channel
Bottom Width: 2.00 ft
Side Slope (H:V): 3.00 (_:1)
Channel Slope: 0.0100
Channel Manning's n: 0.0240
Channel Invert Elevation: 341.60 ft
Roadway Data for Crossing: Culvert 5
Roadway Profile Shape: Constant Roadway Elevation
Crest Length: 10.00 ft
Crest Elevation: 346.24 ft
Roadway Surface: Paved
Roadway Top Width: 50.00 ft
Crossing Discharge Data
Discharge Selection Method: Recurrence

Table 11-Summary of Culvert Flows at Crossing:Culvert 6
Headwater Discharge Total Culvert 6 Roadway Iterations
Elevation Names Discharge Discharge Discharge
(ft) (cfs) (cfs) (cfs)
311.48 2 year 14.41 14.41 0.00 1
311.76 10 year 18.54 18.54 0.00 1
311.89 25 year 20.46 20.46 0.00 1
313.72 Overtopping 42.35 42.35 0.00 Overtopping
Rating Curve Plot for Crossing: Culvert 6
Total Rating Curve
Crossing Culvert 6
314.0-
313.5-
c
0 -
� 313.0-
a� -
w Zr) -
312.5-
a)
312.0-
311.5-
I I I I I I I I I I I I I I L f III t I I I ! I I I I ! I I I I ! i l _
15 20 25 30 35 40 45 50 55
Total Discharge(cfs)

Culvert Data: Culvert 6
Table 6-Culvert Summary Table: Culvert 6
Disc Total Culv Head Inle Out Fl Nor Crit Ou Tail Outl Tail
harg Disc ert water t let o mal ical tle wate et wate
e harg Disc Eleva Con Con w Dep De t r Vel r
Nam e harg tion trol trol Ty th pth De Dept ocit Velo
es (cfs) e (ft) Dep Dep pe (ft) (ft) pth h (ft) y city
(cfs) th th (ft) (ft/ (ft/s
[) (ft) s) )
2 14.41 14.41 311.4 1.73 0.0* 1- 0.57 1.2 0.6 0.39 16.0 6.36
year cfs cfs 8 S2 8 0 3
n
10 18.54 18.54 311.7 2.01 0.0* 1- 0.64 1.4 0.6 0.43 16.8 6.78
year cfs cfs 6 S2 6 9 7
n
25 20.46 20.46 311.8 2.14 0.0* 1- 0.67 1.5 0.7 0.45 17.2 6.96
year cfs cfs 9 S2 4 3 6
n
* Full Flow Headwater elevation is below inlet invert.
Culvert Barrel Data
Culvert Barrel Type Straight Culvert
Inlet Elevation (invert): 309.75 ft,
Outlet Elevation (invert): 303.28 ft
Culvert Length: 78.44 ft,
Culvert Slope: 0.0828

Culvert Performance Curve Plot: Culvert 6
Peiformance Curve
Culvert:Culvert 6
o I • I
Inlet Control Elev Outlet Control Elev
314-
313-
312-
311-
c -
-
310-
a) -
• -
m 309-_
• -
-0 -
• 308_ A
307-_
306-
305-_ _l
-I t I I I ! I I I ! I I I ! I I I ! 1 1 1 1 tilt tilt I I I !
15 20 25 30 35 40 45 50 55
Total Discharge(cfs)

Water Surface Profile Plot for Culvert: Culvert 6
Crossing-Culvert 6,Design Discharge -20.5 cfs
Culvert-Culvert 6,Culvert Discharge-20.5 cfs
314-
313-
312--
311-
it
310-
-
5 309-_
o :
ai 308-
-
307-
305
304--
a
303-.-jI IIII II II IIII IIII II II lilt III ! 1111 lilt tilt till
r r r r r
-20 -10 0 10 20 30 40 50 60 70 80 90 100
Station(ft)
Site Data - Culvert 6
Site Data Option: Culvert Invert Data
Inlet Station: 0.00 ft
Inlet Elevation: 309.75 ft
Outlet Station: 78.17 ft
Outlet Elevation: 303.28 ft
Number of Barrels: 1
Culvert Data Summary- Culvert 6
Barrel Shape: Circular
Barrel Diameter: 2.50 ft
Barrel Material: Concrete
Embedment: 0.00 in
Barrel Manning's n: 0.0120

Culvert Type: Straight
Inlet Configuration: Grooved End Projecting
Inlet Depression: None
Tailwater Data for Crossing: Culvert 6
Table 12- Downstream Channel Rating Curve(Crossing:Culvert 6)
Flow(cfs) Water Velocity Depth (ft) Shear(psi) Froude
Surface (ft/s) Number
Elev(ft)
14.41 303.67 0.39 6.36 1.78 2.32
18.54 303.71 0.43 6.78 2.00 2.36
20.46 303.73 0.45 6.96 2.08 2.38
Tailwater Channel Data - Culvert 6
Tailwater Channel Option:Trapezoidal Channel
Bottom Width: 2.00 ft
Side Slope (H:V): 10.00 (_:1)
Channel Slope: 0.0740
Channel Manning's n: 0.0240
Channel Invert Elevation: 303.28 ft
Roadway Data for Crossing: Culvert 6
Roadway Profile Shape: Constant Roadway Elevation
Crest Length: 10.00 ft
Crest Elevation: 313.72 ft
Roadway Surface: Paved
Roadway Top Width: 50.00 ft
Crossing Discharge Data
Discharge Selection Method: Recurrence

Table 13-Summary of Culvert Flows at Crossing:Culvert 7
Headwater Discharge Total Culvert 7 Roadway Iterations
Elevation Names Discharge Discharge Discharge
(ft) (cfs) (cfs) (cfs)
291.19 2 year 9.07 9.07 0.00 1
291.43 10 year 11.67 11.67 0.00 1
291.54 25 year 12.88 12.88 0.00 1
295.96 Overtopping 39.05 39.05 0.00 Overtopping
Rating Curve Plot for Crossing: Culvert 7
Total Rating Curve
Crossing:Culvert 7
296.0-
295.5-
295.0
294.5-
c -
o -
294.0-_
w -
.(35 293.5-
o
3 -
293.0-
292.5-
292.0-
291.5-
291.0- 1 I I II I I I I
10 15 20 25 30 35 40
Total Discharge(cfs)

Culvert Data: Culvert 7
Table 7-Culvert Summary Table: Culvert 7
Disc Total Culv Head Inle Out Fl Nor Crit Ou Tail Outl Tail
harg Disc ert water t let o mal ical tle wate et wate
e harg Disc Eleva Con Con w Dep De t r Vel r
Nam e harg tion trol trol Ty th pth De Dept ocit Velo
es (cfs) e (ft) Dep Dep pe (ft) (ft) pth h (ft) y city
(cfs) th th (ft) (ft/ (ft/s
(ft) (ft) s) )
2 9.07 9.07 291.1 1.47 0.0* 1- 0.49 1.0 0.5 0.32 14.4 6.24
year cfs cfs 9 S2 8 1 8
n
10 11.67 11.67 291.4 1.71 0.0* 1- 0.55 1.2 0.5 0.36 16.5 6.67
year cfs cfs 3 S2 3 5 4
n
25 12.88 12.88 291.5 1.82 0.0* 1- 0.58 1.2 0.6 0.38 16.4 6.84
year cfs cfs 4 S2 9 0 0
n
* Full Flow Headwater elevation is below inlet invert.
Culvert Barrel Data
Culvert Barrel Type Straight Culvert
Inlet Elevation (invert): 289.72 ft,
Outlet Elevation (invert): 281.97 ft
Culvert Length: 95.51 ft,
Culvert Slope: 0.0814

Culvert Performance Curve Plot: Culvert 7
Performance Curve
Culvert Culvert 7
I • l I ♦ I
Inlet Control Elev Outlet Control Elev
296-
294-
292-
c -
ro
290-
a -
m
288-
z - -_
286-
284- _A-.A
♦_
I I I I ! I I I I illI I 1 1
10 15 20 25 30 40
Total Discharge(cfs)

Water Surface Profile Plot for Culvert: Culvert 7
Crossing-Culvert 7,Design Discharge- 12.9 cfs
Culvert-Culvert 7,Culvert Discharge-12.9 cfs
296-
294-
292-
-
290-
c -
o'07 - \
o
-
w 288-
286-
284-
282-
T I I I I ' '
20 0 20 40 60 80 100 120
Station(ft)
Site Data - Culvert 7
Site Data Option: Culvert Invert Data
Inlet Station: 0.00 ft
Inlet Elevation: 289.72 ft
Outlet Station: 95.20 ft
Outlet Elevation: 281.97 ft
Number of Barrels: 1
Culvert Data Summary- Culvert 7
Barrel Shape: Circular
Barrel Diameter: 2.00 ft
Barrel Material: Concrete
Embedment: 0.00 in
Barrel Manning's n: 0.0120

Culvert Type: Straight
Inlet Configuration: Grooved End Projecting
Inlet Depression: None
Tailwater Data for Crossing: Culvert 7
Table 14- Downstream Channel Rating Curve(Crossing:Culvert 7)
Flow(cfs) Water Velocity Depth (ft) Shear(psi) Froude
Surface (ft/s) Number
Elev(ft)
9.07 282.29 0.32 6.24 1.69 2.43
11.67 282.33 0.36 6.67 1.90 2.47
12.88 282.35 0.38 6.84 1.99 2.49
Tailwater Channel Data - Culvert 7
Tailwater Channel Option:Trapezoidal Channel
Bottom Width: 2.00 ft
Side Slope (H:V): 8.00 (_:1)
Channel Slope: 0.0850
Channel Manning's n: 0.0240
Channel Invert Elevation: 281.97 ft
Roadway Data for Crossing: Culvert 7
Roadway Profile Shape: Constant Roadway Elevation
Crest Length: 10.00 ft
Crest Elevation: 295.96 ft
Roadway Surface: Paved
Roadway Top Width: 50.00 ft
Crossing Discharge Data
Discharge Selection Method: Recurrence

Table 15-Summary of Culvert Flows at Crossing:Culvert 8
Headwater Discharge Total Culvert 8 Roadway Iterations
Elevation Names Discharge Discharge Discharge
(ft) (cfs) (cfs) (cfs)
293.14 2 year 9.07 9.07 0.00 1
293.39 10 year 11.67 11.67 0.00 1
293.50 25 year 12.88 12.88 0.00 1
297.08 Overtopping 35.64 35.64 0.00 Overtopping
Rating Curve Plot for Crossing: Culvert 8
Total Rating Curve
Crossing Culvert 8
297.0-
296.5-
296.0-
c
0
295.5-
a _
w
6295.0-
CD
m a)
= 294.5-
294.0-
293.5-
2930
I
10 15 20 25 310 35 40
Total Discharge(cfs)

Culvert Data: Culvert 8
Table 8-Culvert Summary Table: Culvert 8
Disc Total Culv Head Inle Out Fl Nor Crit Ou Tail Outl Tail
harg Disc ert water t let o mal ical tle wate et wate
e harg Disc Eleva Con Con w Dep De t r Vel r
Nam e harg tion trol trol Ty th pth De Dept ocit Velo
es (cfs) e (ft) Dep Dep pe (ft) (ft) pth h (ft) y city
(cfs) th th (ft) (ft/ (ft/s
(ft) (ft) s) )
2 9.07 9.07 293.1 1.44 0.0* 1- 0.46 1.0 0.4 0.41 16.7 5.55
year cfs cfs 4 S2 8 6 4
n
10 11.67 11.67 293.3 1.69 0.0* 1- 0.52 1.2 0.5 0.46 18.0 5.94
year cfs cfs 9 S2 3 2 1
n
25 12.88 12.88 293.5 1.80 0.0* 1- 0.55 1.2 0.5 0.48 18.2 6.10
year cfs cfs 0 S2 9 5 9
n
* Full Flow Headwater elevation is below inlet invert.
Culvert Barrel Data
Culvert Barrel Type Straight Culvert
Inlet Elevation (invert): 291.70 ft,
Outlet Elevation (invert): 277.76 ft
Culvert Length: 135.46 ft,
Culvert Slope: 0.1035

Culvert Performance Curve Plot: Culvert 8
Peiformance Curve
Culvert:Culvert 8
o I • I
Inlet Control Elev Outlet Control Elev
298-
296-
294-
292
c -
.2 290-
m -
a)
288-
a6 -
io -
m 286-
_ - ■
284-
282-
280-
Ar
10 15 20 25 30 35 40
Total Discharge(cfs)

Water Surface Profile Plot for Culvert: Culvert 8
Crossing-Culvert 8,Design Discharge- 12.9 cfs
Culvert-Culvert 8,Culvert Discharge-12.9 cfs
298
296-
294-
-
292-
N
N
N
290- �N
N
-
S 288- �N
- - N
m -
a - N
W 286- �N
N
284- N
282--
N
280- �N
278-
- III III III III III III I l l III III III I l l
I - I
40 20 0 20 40 60 80 100 120 140 160
Station(ft)
Site Data - Culvert 8
Site Data Option: Culvert Invert Data
Inlet Station: 0.00 ft
Inlet Elevation: 291.70 ft
Outlet Station: 134.74 ft
Outlet Elevation: 277.76 ft
Number of Barrels: 1
Culvert Data Summary- Culvert 8
Barrel Shape: Circular
Barrel Diameter: 2.00 ft
Barrel Material: Concrete
Embedment: 0.00 in
Barrel Manning's n: 0.0120

Culvert Type: Straight
Inlet Configuration: Grooved End Projecting
Inlet Depression: None
Tailwater Data for Crossing: Culvert 8
Table 16- Downstream Channel Rating Curve(Crossing:Culvert 8)
Flow(cfs) Water Velocity Depth (ft) Shear(psi) Froude
Surface (ft/s) Number
Elev(ft)
9.07 278.17 0.41 5.55 1.19 1.88
11.67 278.22 0.46 5.94 1.34 1.92
12.88 278.24 0.48 6.10 1.41 1.93
Tailwater Channel Data - Culvert 8
Tailwater Channel Option:Trapezoidal Channel
Bottom Width: 2.00 ft
Side Slope (H:V): 5.00 (_:1)
Channel Slope: 0.0470
Channel Manning's n: 0.0240
Channel Invert Elevation: 277.76 ft
Roadway Data for Crossing: Culvert 8
Roadway Profile Shape: Constant Roadway Elevation
Crest Length: 10.00 ft
Crest Elevation: 297.08 ft
Roadway Surface: Paved
Roadway Top Width: 50.00 ft
Crossing Discharge Data
Discharge Selection Method: Recurrence

Table 17-Summary of Culvert Flows at Crossing:Culvert 9
Headwater Discharge Total Culvert 9 Roadway Iterations
Elevation Names Discharge Discharge Discharge
(ft) (cfs) (cfs) (cfs)
323.29 2 year 9.25 9.25 0.00 1
323.53 10 year 11.90 11.90 0.00 1
323.65 25 year 13.14 13.14 0.00 1
325.86 Overtopping_ 29.29 29.29 0.00 Overtopping
Rating Curve Plot for Crossing: Culvert 9
Total Rating Curve
Crossing Culvert 9
326.0-
325.5-
St 325.0-
m -
a� -
w —
a) —
3 324.5-
-o
a�
z
324.0-
323.5-
- i I I I I I I
10 15 20 25 30 35
Total Discharge(cfs)

Culvert Data: Culvert 9
Table 9-Culvert Summary Table: Culvert 9
Disc Total Culv Head Inle Out Fl Nor Crit Ou Tail Outl Tail
harg Disc ert water t let o mal ical tle wate et wate
e harg Disc Eleva Con Con w Dep De t r Vel r
Nam e harg tion trol trol Ty th pth De Dept ocit Velo
es (cfs) e (ft) Dep Dep pe (ft) (ft) pth h (ft) y city
(cfs) th th (ft) (ft/ (ft/s
(ft) (ft) _ s) )
2 9.25 9.25 323.2 1.45 0.0* 1- 0.45 1.0 0.4 0.28 16.7 6.71
year cfs cfs 9 S2 9 6 0
n
10 11.90 11.90 323.5 1.69 0.0* 1- 0.51 1.2 0.5 0.32 17.5 7.17
year cfs cfs 3 S2 4 4 9
n
25 13.14 13.14 323.6 1.81 0.0* 1- 0.53 1.3 0.5 0.33 19.5 7.36
year cfs cfs 5 S2 0 3 4
n
* Full Flow Headwater elevation is below inlet invert.
Culvert Barrel Data
Culvert Barrel Type Straight Culvert
Inlet Elevation (invert): 321.84 ft,
Outlet Elevation (invert): 310.26 ft
Culvert Length: 98.86 ft,
Culvert Slope: 0.1179

Culvert Performance Curve Plot: Culvert 9
Peiformance Curve
Culvert:Culvert 9
o I • I
Inlet Control Elev Outlet Control Elev
326-
324-
322-
c
o -
m 320-
> -
w -
m 318-
-g -
co -
= 316-
■
314-
A--
v i i i i i i
10 15 20 25 30 35
Total Discharge(cfs)

Water Surface Profile Plot for Culvert: Culvert 9
Crossing-Culvert 9,Design Discharge- 13.1 cfs
Culvert-Culvert 9,Culvert Discharge-13.1 cfs
326-
324-_
1' \
322-_
N
N.
320- N\N
_ N
• _ N
c \N
� 318- �N
v �N
w - N.
316- �N.
_ N
N.
_ N.
N.
314- N.
s.
N.
N.
312- \\N
310-
l< i
L _1._
-20 0 20 40 60 80 100 120
Station(ft)
Site Data - Culvert 9
Site Data Option: Culvert Invert Data
Inlet Station: 0.00 ft
Inlet Elevation: 321.84 ft
Outlet Station: 98.18 ft
Outlet Elevation: 310.26 ft
Number of Barrels: 1
Culvert Data Summary- Culvert 9
Barrel Shape: Circular
Barrel Diameter: 2.00 ft
Barrel Material: Concrete
Embedment: 0.00 in
Barrel Manning's n: 0.0120

Culvert Type: Straight
Inlet Configuration: Grooved End Projecting
Inlet Depression: None
Tailwater Data for Crossing: Culvert 9
Table 18- Downstream Channel Rating Curve(Crossing:Culvert 9)
Flow(cfs) Water Velocity Depth (ft) Shear(psi) Froude
Surface (ft/s) Number
Elev(ft)
9.25 310.54 0.28 6.71 2.08 2.79
11.90 310.58 0.32 7.17 2.33 2.84
13.14 310.59 0.33 7.36 2.44 2.86
Tailwater Channel Data - Culvert 9
Tailwater Channel Option:Trapezoidal Channel
Bottom Width: 2.00 ft
Side Slope (H:V): 10.00 (_:1)
Channel Slope: 0.1170
Channel Manning's n: 0.0240
Channel Invert Elevation: 310.26 ft
Roadway Data for Crossing: Culvert 9
Roadway Profile Shape: Constant Roadway Elevation
Crest Length: 10.00 ft
Crest Elevation: 325.86 ft
Roadway Surface: Paved
Roadway Top Width: 50.00 ft
Crossing Discharge Data
Discharge Selection Method: Recurrence

Table 19-Summary of Culvert Flows at Crossing:Culvert 10
Headwater Discharge Total Culvert 10 Roadway Iterations
Elevation Names Discharge Discharge Discharge
(ft) (cfs) (cfs) (cfs)
314.88 2 year 12.99 12.99 0.00 1
315.14 10 year 16.71 16.71 0.00 1
315.26 25 year 18.44 18.44 0.00 1
322.18 Overtopping_ 73.73 73.73 0.00 Overtopping
Rating Curve Plot for Crossing: Culvert 10
Total Rating Curve
Crossing Culvert 10
322-
321-
320-
c -
o _
m
319-
w j
Zr)
io —
3 318-
-o
m —
a)
_ -
317-
316-
315-
1 i I I I I I I
10 20 30 40 50 60 70 80
Total Discharge(cfs)

Culvert Data: Culvert 10
Table 10-Culvert Summary Table: Culvert 10
Disc Total Culv Head Inle Out Fl Nor Crit Ou Tail Outl Tail
harg Disc ert water t let o mal ical tle wate et wate
e harg Disc Eleva Con Con w Dep De t r Vel r
Nam e harg tion trol trol Ty th pth De Dept ocit Velo
es (cfs) e (ft) Dep Dep pe (ft) (ft) pth h (ft) y city
(cfs) th th (ft) (ft/ (ft/s
L) (ft) s) )
2 12.99 12.99 314.8 1.71 0.0* 1- 0.81 1.2 0.8 0.33 9.19 7.61
year cfs cfs 8 S2 1 3
n
10 16.71 16.71 315.1 1.97 0.10 1- 0.92 1.3 0.9 0.36 9.68 8.12
year cfs cfs 4 4 S2 8 6
n
25 18.44 18.44 315.2 2.09 0.25 1- 0.97 1.4 1.0 0.38 10.0 8.33
year cfs cfs 6 3 S2 5 0 0
n
* Full Flow Headwater elevation is below inlet invert.
Culvert Barrel Data
Culvert Barrel Type Straight Culvert
Inlet Elevation (invert): 313.17 ft,
Outlet Elevation (invert): 311.54 ft
Culvert Length: 96.74 ft,
Culvert Slope: 0.0169

Culvert Performance Curve Plot: Culvert 10
Performance Curve
Culvert:Culvert 10
o I • I
Inlet Control Elev Outlet Control Elev
322
321- A
320-
c 319-
o -�
at 318-
w =
317
m ._
= 316-_
315-
314-
313- r�
1 I
10 20 30 40 50 60 70 80
Total Discharge(cfs)

Water Surface Profile Plot for Culvert: Culvert 10
Crossing-Culvert 10,Design Discharge - 18.4 cfs
Culvert-Culvert 10,Culvert Discharge-18.4 cfs
322-
321-
320
319-
318-
c _
.2 317-
m _
-
(i) -
ul 316-
315-
314-
313-
312
- a
-20 0 20 40 60 80 100 120
Station(ft)
Site Data - Culvert 10
Site Data Option: Culvert Invert Data
Inlet Station: 0.00 ft
Inlet Elevation: 313.17 ft
Outlet Station: 96.73 ft
Outlet Elevation: 311.54 ft
Number of Barrels: 1
Culvert Data Summary- Culvert 10
Barrel Shape: Circular
Barrel Diameter: 2.50 ft
Barrel Material: Concrete
Embedment: 0.00 in
Barrel Manning's n: 0.0120

Culvert Type: Straight
Inlet Configuration: Grooved End Projecting (Ke=0.2)
Inlet Depression: None
Tailwater Data for Crossing: Culvert 10
Table 20- Downstream Channel Rating Curve(Crossing:Culvert 10)
Flow(cfs) Water Velocity Depth (ft) Shear(psi) Froude
Surface (ft/s) Number
Elev(ft)
12.99 311.87 0.33 7.61 2.62 2.99
16.71 311.90 0.36 8.12 2.93 3.04
18.44 311.92 0.38 8.33 3.07 3.06
Tailwater Channel Data - Culvert 10
Tailwater Channel Option:Trapezoidal Channel
Bottom Width: 2.00 ft
Side Slope (H:V): 10.00 (_:1)
Channel Slope: 0.1290
Channel Manning's n: 0.0240
Channel Invert Elevation: 311.54 ft
Roadway Data for Crossing: Culvert 10
Roadway Profile Shape: Constant Roadway Elevation
Crest Length: 10.00 ft
Crest Elevation: 322.18 ft
Roadway Surface: Paved
Roadway Top Width: 50.00 ft

4 MCKIM&crtEED
TRAPEZOIDAL CHANNEL COMPUTATION SHEET
PROJECT: Bloom(South)
LOCATION: Fuquay-Varina,NC
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GUQ
Ac Co Ri L d b e n Qf Qd S T
TDD#1 0.29 0.60 7.60 289.0 1.50 2.00 11.00 3 0.065 28.26 1.32 0.34 1.28 0.020 0.43 4 Straw with Net ✓
TDD#2 0.92 0.60 7.60 304.0 1.50 2.00 11.00 3 0.065 28.26 4.21 0.62 1.77 0.020 0.77 5 Straw with Net ✓
TDD#3 0.06 0.60 7.60 59.0 1.50 2.00 11.00 3 0.065 19.48 0.27 0.18 0.61 0.010 0.10 1 Straw with Net ✓
TDD#4 0.49 0.60 7.60 94.0 1.50 2.00 11.00 3 0.065 19.48 2.24 0.54 1.13 0.010 0.32 1 Straw with Net ✓
TDD#5.1 0.69 0.60 7.60 130.0 1.50 2.00 11.00 3 0.065 22.61 3.15 0.60 1.39 0.013 0.48 2 Straw with Net ✓
TDD#5.2 2.70 0.60 7.60 192.0 1.50 2.00 11.00 3 0.025 103.91 12.31 0.55 6.10 0.040 1.38 6 Synthetic Mat ✓
TDD#5.3 0.21 0.60 7.60 199.0 1.50 2.00 11.00 3 0.065 39.96 0.98 0.24 1.49 0.040 0.60 6 Straw with Net ✓
TDD#5.4 5.52 0.60 7.60 444.0 1.70 2.00 12.20 3 0.033 64.17 25.17 1.12 4.19 0.015 1.05 5 Straw with Net ✓
TDD#6.1 0.50 0.60 7.60 689.0 1.50 2.00 11.00 3 0.065 24.47 2.27 0.49 1.34 0.015 0.46 7 Straw with Net ✓
TDD#6.2 0.54 0.60 7.60 36.0 1.50 2.00 11.00 3 0.065 47.29 2.44 0.36 2.20 0.056 1.26 2 Straw with Net ✓
TDD#7.1 0.64 0.60 7.60 674.0 1.50 2.00 11.00 3 0.065 19.98 2.92 0.61 1.24 0.010 0.38 5 Straw with Net ✓
TDD#7.2 1.01 0.60 7.60 392.0 1.50 2.00 11.00 3 0.065 39.96 4.60 0.54 2.33 0.040 1.36 11 Straw with Net ✓
TDD#8.1 0.21 0.60 7.60 110.0 1.50 2.00 11.00 3 0.065 31.02 0.96 0.27 1.24 0.024 0.41 2 Straw with Net ✓
TDD#8.2 0.89 0.60 7.60 665.0 1.50 2.00 11.00 3 0.033 39.36 4.04 0.51 2.22 0.010 0.32 5 Straw with Net ✓
TDD#8.3 1.21 0.60 7.60 334.0 1.50 2.00 11.00 3 0.033 78.72 5.52 0.42 4.00 0.040 1.06 9 Straw with Net ✓
TDD#8.4 2.22 0.60 7.60 168.0 1.50 4.50 13.50 3 0.078 90.92 10.12 0.48 3.59 0.131 3.89 15 Rip Rap D50(12") ✓
TDD#9 0.75 0.60 7.60 480.0 1.50 2.00 11.00 3 0.065 31.02 3.40 0.53 1.78 0.024 0.80 8 Straw with Net ✓
TDD#10.1 0.09 0.60 7.60 123.0 1.50 2.00 11.00 3 0.065 21.71 0.40 0.21 0.74 0.012 0.15 1 Straw with Net ✓
TDD#10.2 0.51 0.60 7.60 467.0 1.50 2.00 11.00 3 0.065 48.95 2.31 0.34 2.22 0.060 1.29 19 Straw with Net ✓
TDD#11 0.39 0.60 7.60 504.0 1.50 2.00 11.00 3 0.065 48.95 1.76 0.30 2.05 0.060 1.11 21 Straw with Net ✓
TDD#12 0.51 0.60 7.60 347.0 1.50 2.00 11.00 3 0.065 42.39 2.32 0.37 2.01 0.045 1.04 11 Straw with Net ✓
TDD#13 0.49 0.60 7.60 478.0 1.50 2.00 11.00 3 0.065 34.61 2.25 0.41 1.72 0.030 0.76 10 Straw with Net ✓
TDD#14 0.30 0.60 7.60 409.0 1.50 2.00 11.00 3 0.065 34.61 1.36 0.31 1.49 0.030 0.58 9 Straw with Net ✓
TDD#15 0.21 0.60 7.60 142.0 1.50 2.00 11.00 3 0.065 18.42 0.94 0.36 0.85 0.009 0.19 1 Straw with Net ✓
TDD#16 0.14 0.60 7.60 125.0 1.50 2.00 11.00 3 0.065 66.27 0.65 0.14 1.85 0.110 0.99 10 Straw with Net ✓
TDD#17 0.38 0.60 7.60 518.0 1.50 2.00 11.00 3 0.065 52.87 1.75 0.28 2.16 0.070 1.24 25 Straw with Net ✓
TDD#18 0.38 0.60 7.60 562.0 1.50 2.00 11.00 3 0.065 52.87 1.74 0.28 2.16 0.070 1.24 27 Straw with Net ✓
TDD#19 0.65 0.60 7.60 219.0 1.50 2.00 11.00 3 0.065 40.46 2.97 0.43 2.08 0.041 1.11 6 Straw with Net ✓
TDD#20.1 1.46 0.60 7.60 596.0 1.50 2.00 11.00 3 0.036 76.54 6.66 0.47 4.13 0.045 1.33 18 Synthetic Mat ✓
TDD#20.2 1.07 0.60 7.60 200.0 1.50 2.00 11.00 3 0.065 23.98 4.88 0.72 1.63 0.014 0.65 2 Straw with Net ✓
TDD#20.3 0.13 0.60 7.60 164.0 1.50 2.00 11.00 3 0.065 23.64 0.59 0.24 0.89 0.014 0.21 2 Straw with Net ✓
TDD#20.4 0.13 0.60 7.60 214.0 1.50 2.00 11.00 3 0.065 44.68 0.59 0.17 1.38 0.050 0.53 8 Straw with Net ✓
TDD#20.5 4.55 0.60 7.60 245.0 2.00 2.00 14.00 3 0.078 90.29 20.73 1.04 3.88 0.078 5.07 13 Rip Rap D50(12") X

` E. 3 w a
t
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TDD#21 0.60 0.60 7.60 564.0 1.50 2.00 11.00 3 0.036 100.12 2.72 0.26 3.85 0.077 1.23 29 Synthetic Mat V
TDD#22 1.23 0.60 7.60 892.0 1.50 2.00 11.00 3 0.036 100.12 5.61 0.38 4.77 0.077 1.81 46 Synthetic Mat V
TDD#23 0.24 0.60 7.60 356.0 1.50 2.00 11.00 3 0.065 28.26 1.11 0.31 1.21 0.020 0.39 5 Straw with Net V
TDD#24 0.51 0.60 7.60 344.0 1.50 2.00 11.00 3 0.065 28.26 2.30 0.46 1.50 0.020 0.57 5 Straw with Net V
TDD#25.1 1.06 0.60 7.60 799.0 1.50 2.00 11.00 3 0.033 39.36 4.82 0.56 2.33 0.010 0.35 6 Straw with Net V
TDD#25.2 1.34 0.60 7.60 254.0 1.50 2.00 11.00 3 0.036 98.81 6.13 0.40 4.85 0.075 1.86 13 Synthetic Mat V
TDD#25.3 1.50 0.60 7.60 98.0 1.50 2.00 11.00 3 0.078 52.66 6.84 0.58 3.17 0.100 3.61 7 Rip Rap D50(12") V
TDD#26.1 0.72 0.60 7.60 795.0 1.50 2.00 11.00 3 0.065 19.98 3.28 0.65 1.28 0.010 0.40 6 Straw with Net V
TDD#26.2 0.93 0.60 7.60 248.0 1.50 2.00 11.00 3 0.036 98.81 4.26 0.33 4.36 0.075 1.53 13 Synthetic Mat V
TDD#26.3 1.08 0.60 7.60 203.0 1.50 2.00 11.00 3 0.078 52.66 4.92 0.49 2.90 0.100 3.06 14 Rip Rap D50(12") V
TDD#27.1 0.19 0.60 7.60 168.0 1.50 2.00 11.00 3 0.065 32.83 0.88 0.25 1.26 0.027 0.43 4 Straw with Net V
TDD#27.2 1.07 0.60 7.60 208.0 1.50 2.00 11.00 3 0.033 44.88 4.86 0.53 2.57 0.013 0.43 2 Straw with Net V
TDD#27.3 0.17 0.60 7.60 249.0 1.50 2.00 11.00 3 0.065 22.78 0.78 0.29 0.94 0.013 0.24 3 Straw with Net V
TDD#27.4 2.61 0.60 7.60 204.0 1.50 2.00 11.00 3 0.033 64.67 11.88 0.69 4.27 0.027 1.16 4 Straw with Net V
TDD#27.5 0.46 0.60 7.60 232.0 1.50 2.00 11.00 3 0.065 19.98 2.12 0.52 1.14 0.010 0.33 2 Straw with Net V
TDD#27.6 0.16 0.60 7.60 232.0 1.50 2.00 11.00 3 0.065 19.98 0.72 0.30 0.84 0.010 0.19 2 Straw with Net V
TDD#27.7 5.01 0.60 7.60 111.0 1.50 2.00 11.00 3 0.025 61.47 22.86 0.96 4.89 0.014 0.84 2 Synthetic Mat V
TDD#28 0.37 0.60 7.60 516.0 1.50 2.00 11.00 3 0.065 32.65 1.67 0.36 1.52 0.027 0.60 10 Straw with Net V
CWD#1 2.30 0.60 7.60 368.0 1.50 2.00 11.00 3 0.033 26.98 10.50 0.98 2.17 0.005 0.29 2 Straw with Net V
CWD#3 1.32 0.60 7.60 481.0 1.50 2.00 11.00 3 0.033 60.97 6.01 0.50 3.40 0.024 0.75 8 Straw with Net V
CWD#4 1.90 0.60 7.60 56.0 1.50 2.00 11.00 3 0.078 55.23 8.64 0.63 3.50 0.110 4.35 5 Rip Rap D50(12") X
CWD#5 2.56 0.60 7.60 323.0 1.50 2.00 11.00 3 0.033 46.57 11.66 0.80 3.34 0.014 0.70 4 Straw with Net V
CWD#6 0.47 0.60 7.60 158.0 1.50 2.00 11.00 3 0.036 114.09 2.15 0.21 3.93 0.100 1.30 11 Synthetic Mat V
CWD#7 1.35 0.60 7.60 340.0 1.50 2.00 11.00 3 0.065 36.85 6.17 0.65 2.37 0.034 1.39 8 Straw with Net V
CWD#8.1 5.07 0.60 7.60 742.0 1.50 2.00 11.00 3 0.033 59.69 23.11 0.98 4.80 0.023 1.40 12 Straw with Net V
CWD#8.2 7.58 0.60 7.60 153.0 1.70 2.00 12.20 3 0.078 91.40 34.57 1.10 5.91 0.170 11.70 18 Rip Rap D50(12") x
CWD#8.3 14.64 0.60 7.60 317.0 2.50 2.00 17.00 3 0.033 117.32 66.74 1.97 4.29 0.008 1.01 2 Straw with Net V
CWD#8.4 2.44 0.60 7.60 601.0 1.50 2.00 11.00 3 0.033 70.41 11.12 0.64 4.47 0.032 1.27 13 Straw with Net V
CWD#8.5 17.07 0.60 7.60 76.0 2.00 5.00 17.00 3 0.078 194.18 77.86 1.28 6.90 0.160 12.75 9 Rip Rap D50(12") X
CWD#9 1.73 0.60 7.60 493.0 1.50 2.00 11.00 3 0.033 30.49 7.88 0.81 2.21 0.006 0.30 2 Straw with Net V
CWD#10.1 1.70 0.60 7.60 930.0 1.50 2.00 11.00 3 0.033 28.65 7.73 0.82 2.10 0.005 0.27 4 Straw with Net V
CWD#10.2 3.99 0.60 7.60 311.0 1.50 3.00 12.00 3 0.078 52.90 18.21 0.90 3.55 0.070 3.93 15 Rip Rap D50(12") V
CWD#11 5.72 0.60 7.60 199.0 1.50 3.00 12.00 3 0.078 63.22 26.09 0.98 4.45 0.100 6.14 14 Rip Rap D50(12") X
•Manning's values area based on channel lining and design flow depth as shown in NC DENR Table 8.05e.
**Shear Stress is NA if design velocity is less than 2 fps and temporary seeding is used as a liner. Per NC DENR linings are not required if velocity is less than 2 fps.
"'Assumed 18"check dam

Dove Landing (South) V
PROJECT2 NO.: 0471 ---9 014 BY: JPM
: PMN v,MII�/IcCREED
DATE:
REVISED: P.M.: AEF I RIPRAP APRON DESIGN (NCDENR METHOD)
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3 S to 20 50 100 200 500 ]00"
Discharge(ft3lsec)
Design of outlet protection from a round pipe flowing full, minimum tailwater condition Tw<0.5 diameter
FES# Do(Pipe 0) Tw Tw<0.5e Q V d50 La Apron width Apron width Max Stone Apron Sides of Pipe
(ft) (ft) (cfs) (ftls) (ft) (ft) at outlet(ft) at pipe(ft) o(ft) Thickness(ft) Stone Placement Height(ft)
1 1.5 0 OKAY 6.10 3.4 0.25 10 12 4.5 0.4 0.6 1.0
2 1.5 0 OKAY 9.10 5.1 0.25 10 12 4.5 0.4 0.6 1.0
3 2.5 0 OKAY 23.50 4.8 0.75 19 22 7.5 1.1 1.7 1.7
4 1.5 0 OKAY 23.50 13.3 0.75 19 21 4.5 1.1 1.7 1.0
5 1.5 0 I OKAY 8.50 4.8 0.33 10 12 _ 4.5 0.5 0.8 1.0
6 2.5 0 OKAY 20.50 4.2 0.75 20 23 _ 7.5 1.1 1.7 1.7
7 2 0 OKAY 12.90 4.1 0.4 12 14 _ 6 0.6 0.9 1.3
8 2 0 OKAY 17.40 5.5 0.4 12 14 6 0.6 0.9 1.3
9 2 0 OKAY 13.10 4.2 0.4 12 14 6 0.6 0.9 1.3
10 2.5 0 OKAY 18.50 3.8 0.5 10 13 7.5 0.8 1.2 1.7