SW6230101_Design Calculations_20230111

Stormwater Narrative & Data
For
Kingsbury Ridge
Fayetteville, NC
Developer:
Kingsbury Ridge, LLC.
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�i vF°o NGINEtiFo'�lw�
mm..p0lbV
A.
ej ENGINEERI
Larry KI
Prepared By:
NG
- SURVEYING - DESIGNING - DRAF71NG
ng & Associates, R.L.S., P.A.,
P.O. Box 53787
1333 Morganton Road, Suite 201
Fayetteville, North Carolina 28305
P. [phone] F. [phone]
www.LKandA.com
NC Firm License #: C-0887

Table of Contents
1. Stormwater Narrative
2. Calculations of Individual Drainage Areas & Outlet Swales (Rational Method)
3. Outlet Swale & Side Ditch Swale Calculations
4. Culvert Crossing Calculations
5. Rip Rap Apron Sizing for Various Outlets' & Culverts'
6. Soils Report for Site

STORMWATER NARRATIVE
The proposed subdivision development will include 88 single-family, residential lots utilizing a low
density stormwater design. The overall development's total area is 144.04 acres total and is surrounded
mostly by heavily wooded land with Elliot Bridge Road and a few larger residential parcels to the east.
Lots will be served by individual, on -site wastewater/sel)l is systems as well as public water. No grading
or c,:;cavation will occur outside of the noted limits of construction, as the developer does not wish to
harm the soils that are suitable for septic systems.
Stormwater for this site will be permitted via NCDEQ's Low Density Stormwater permitting option with a
total of 13.71% impervious area between the streets', lots and miscellaneous areas coverage.
Furthermore, each lot will receive an allotment of 8,000 S.F of impervious, built upon area. Grassed
outlet swales with curled wood turf reinforcement matting and grassed side ditches for the streets' will
convey the majority of the runoff from this proposed development, while the remainder of the runoff
generated shall be dispersed via flow that is diffused over large vegetated or wooded areas. Individual
drainage areas have been delineated on the plan sheet labeled "Drainage & Impervious Areas Plan for
the Overall Site — Kingsbury Ridge." Here, all individual portions of the site's hydrology are shown in
detail and analyzed, in order to determine the cumulative flow that is tributary to each portion of a side
ditch swales along the streets' or to the outlet swales that will treat & convey the stormwater runoff.
Per NCDEQ's guidance on Low Density Stormwater Developments, all side ditch swales and the outlet
swales are vegetated/grassed conveyances that are designed not to erode during 10-year storm events.
Velocities have been verified as well to be acceptable per NCDEQ's Erosion Control Design Manual's
table 8.05A— Maximum Permissible Design Velocities for Vegetated Channels. These vegetated/grassed
outlet swales feature 3' wide bottoms with 3:1 side slopes and are at a minimum 100' in length;
however most of these outlet swales are usually much longer due to the site's large size, distance to
acceptable outlet points and physical topography. The streets' side ditch swales have 4:1 slopes running
from the edge of the road shoulder down to the side ditch's bottom and then with a 3:1 slope that ties
back into existing topography.
Street centerline grades and outlet swale slopes have been analyzed and designed so to minimize
discharge velocities by keeping grades flatter, which helps to minimize the overall depth of the
excavation for these swales and the disturbance required for the site. The intent here is to keep these
streets and outlet swales from being unnecessarily deep and wide, in hopes to reduce the chances of
surface erosion due to large 3:1 slopes, as well as to not adversely impact the septic potential of each
lot. However, some outlet swales have moderate grades at their ends due to the site's native
topography being steeper at the edges, where lots' existing grading cannot be altered in most instances
due to natural features and the intended use of on-site/septic systems. Where such circumstances exist,
the erosion control, grading & drainage plans call out for velocity dissipating devices such as turf
reinforcement matting, rip rap check dams within the outlet swales and rip rap outlet aprons at the
swales' ends.

Calculations for Individual Drainage
Areas &Grassed Side Ditches or Swales

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KINGSBURY RIDGE - TIME OF CONCENTRATION CALCULATIONS FOR EACH
INDIVIDUAL DRAINAGE AREA
TOTAL TIME OF
TR-55 SWALE CONCENTRATED FLOW TRAVEL CONCENTRATION
TR-SS 0VI RI ANf71SHFFT FI nw Tlnnc nc rnrurcIUTDATIMI rAi rc :....i
Drainage
Area
Sheet Flow "n"
(blended mannings
value for cultivated
Sheet Flow Tc soils from TR-55 table
(mins) 3-1)
2yr-24hr
L {distance) Rainfall (in)
Slope
(ft/ftI
Elevation
Difference
(ft)
Shallow Avg. Velocity
Concenrated Tc (in ft/s from TR-
(mins) 55 FIG 3-1)
L
(distance)
Slope
Ift/ft)
Swale 9 -
12.04
0.115
95
3.71
0.0053
0.5
1 +
1.53
1.8
165
0.0125 =
13.6
Swale 10
11.18
0.115
210
3.71
1 0.0310
6.5
1 +
2.78
1.8
300
0.0125 -
14.0
Swale 11
21.10
0.115
290
3.71
0.0121
3.5
+
3.78
1.5
340
0.0075 -
24.9
Swale 12
8.55
0.115
90
3.71
0.0111
1
+
3.39
1.5
305
0.0075 =
11.9
Swale 13
12.08
0.115
240
3.71
0.0333
8
+
1.04
1.6
100
0.0100 =
13.1
Swale 14
13.33
0.115
255
3.71
0.0294
zs
+
1.82
1.6
vs
0.0075
15.2
Swale 15
10.58
0.115
155
3.71
0.0194
3
+
1.38
2.6
215
0.0250 =
12,0
Swale 16
10.88
0.115
110
3.71
0.0091
1
+
1.63
26
255
0.0250 =
12.5
Swale 17
10.67
0.115
185
3.71
0.0270
5
+
4.86
1.2
350
0.0030 =
15.5
Swale 18
0.46
0.115
10
3.71
0.2000
2
+
4.03
1.2
290
0.0030 =
S,O
Swale 19
10.51
0.115
145
3.71
0.0172
2.5
+
3.77
2.2
497
0.0125 =
143
Swale 20
7.99
0.115
85
3.71
0.0118
1
+
3.83
2.2
505
0.0125 =
11.8
Swale 21
9.77
0.115
145
3.71
0.0207
3
1.16
3.1
215
0.0400 =
10.9
Swale 22
0.46
0.115
10
3.71
0.2000
2
+
1.16
3.1
215
0.0400 =
510
Swale 23
14.76
0.115
295
3.71
1 0.0305
9
1 +
1.28
2.4
185
0.0225 =
16.0
Swale 24
0.46
0.115
10
3.71
0.2000
2
+
1.32
2.4
190
0.0225 =
5.0
Swale 25
14.45
0.115
260
3.71
0.0250
6.5
+
1.19
2.8
200
0.0295 =
15.6
Swale 26
0.46
1 0.115
10
3.71
0.2000
2
+
1.19
2.8
200
0.0295 =
5.0
Swale27
17.91
0.115
275
3.n
0.0164 1
4.5
+
0.28
1.2
20
0.0050 =
i8.2
Swale 28
6.79
0.115
80
3.71
0.0156
1.25
+
2.43
1.2
175
0.0050 =
9.2
Swale 29
10.06
0.115
135
3.71
0.0167
2.25
+
0.71
2.1
90
0.0175 =
10.$
Swale 30
9.62
0.115
130
3.71
0.0173
2.25
+
0.67
2A
85
0.0175 =
10.3
Swale 31
8.43
0.115
135
3.71
0.0259
3.5
+
125
1.2
90
0.0050 =
9.7
Swale 32
8.55
1 0.115
90
3.71
0.0111
1
+
2.15
1.2
155
0.0050 =
10.7
Swale 33
9.13
0.115
95
3.71
0.0105
1
+
1.94
1.2
140
0.0050 =
11.1
Swale 34
0.46
0.115
10
3.71
0.2000
2
+
2.78
1.2
200
0.0050 =
5.0
Swale 35
13.06
0.115
245
3.71
0.0286
7
+
0.13
3.1
25
0.0400 =
13.2
Swale 36
8.30
0.115
150
3.71
0.0333
5
+
0.40
3.1
75
0.0400 =
8.7
Swale 37
10.88
0.115
220
3.71
0.0364
8
+
1.79
2.0
215
0.0148 =
12.7
Swale 38
9.80
1 0.115
160
3.71
0.0250
4
1.88
2.0
225
0.0148 -
11.7
Swale 39
0.46
0.115
10
3.71
0.2000
2
+
1.09
2.3
150
0.0217 =
5.0
Swale 40
4.39
0.115
65
3.71 1
0.0308
2
+
1.05
2.3
145
0.0217 -
5.4
Swale 41
0.46
0115
10
3.71
0.2000
2
+
5.07
1.2
365
0.0050
5.5
Swale 42
10.00
0.115
205
3.71
0.0390
8
+
4.51
1.2
325
0.0050 =
14.5
Swale 43
0.46
0.115
10
3,71
0.2000
2 1
+
2.16
2.2
285
0.0175 =
5.0
Swale 44
7.79
0.115
120
3.71
0.0250
3
+
1.89
2.2
250
0.0175 =
9.7
Swale 45
8.70
0.115
115
3.71
0.0174
2
+
0.51
3.1
95
0.0375 =
9.2
Swale 46
9.43
0.115
155
3.71
0.0258
4
+ 1
0.38
3.1
70
0.0375 -
9.8
Swale 47
12.38
0.115
250
3.71
0.0340
8.5
+
0.62
3.1
115 1
0.0375 -
13.0
Swale 48
MCA
0.115
270
3.71
0.0463
12.5
+
0.52
4.0
125 1
0.0580 =
12.2
Swale 49
8.71
0.115
145
3.71
0.0276
4
+
0.44
4.0
105
0.0580 =
9.1
Swale 50
3.23
0.115
40
3.71
0.0250
1
+
0.44
4.0
105
o.os80 =
5.0
Swale 51
0.46
0.115
10
3.71
0.2000
2
+
0.48
3.1
90
0.0375 =
5.0
Swale 52
0.46
0.115
10
3.71
0.2000
2
+
0.81 1
3.1
150
0.0375 =
5.0
Swale 53
0.46
0.115
10
171
0.2000
2
+
1.60
2.6
250
0.0260
5.0
Swale 54
0.46
0.115
10
3.71
0.2000
2
+
1.67
2.6
260
0.0260 -
S.0
Swale 55
9.76
0.115
220
3.71
0.0477
10.5
+
0.89
1.6
85
0.0100 -
10.6
Swale 56
9.66
0.115
240
3.71
0.0583
14
+
3.56
1.1
235
0.0025
13.2
Swale 57
11.22
0.115
205
3.71
0.0293
6
+
0.04
3.8
10
0.0575 -
11.3
Swale 58
0.46
0.115
10
3.71
0.2000
2
+
1.20
1.8
130
0.0125 =
5.0
Swale 59
10.17
0.115
165
3.71
0.0242
4
+
0.89
3.2
170
0.0400 =
11.1
Swale 60
0.32
0.115
10
3.71
0.5000
5
+
0.83
1.2
60
0.0030 =
5.0
Swale 61
5.15
0.115
80
3.71
0.0313
15
+
0.63
1.2
45
0.0050 -
5.8
Swale 62
10.41
0.115
175
3.71
0.0257
4.5
+
0.62
3.3
120
0.0435 =
11.0
Swale 63
9.88
0.115
215
3.71
0.0442
9.5
+
0.04 1
3.8
10
0.0575 =
9.9
Swale 64
8.35
0.115
95
171
0.0132
1.25
+
0.04 1
3.9
10
0.0600 =
R-4

Outlet Swale &Side Ditch Swale
Calculations

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Outlet Swale #1 w/ Turf Matting (curled wood)
Trapezoidal
Bottom Width (ft)
= 3.00
Side Slopes (z:1)
= 3.00, 3.00
Total Depth (ft)
= 3.00
Invert Elev (ft)
= 233.00
Slope (%)
= 7.00
N-Value
= 0.066
Calculations
Compute by:
Known Q
Known Q (cfs)
= 19.24
Elev (ft)
237.00
236.00
235.00
234.00
233.00
232.00
0
5 10
Section
15 20
Reach (ft)
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
25
30
Friday, Nov 11 2022
= 0.86
= 19.24
= 4.80
= 4.01
= 8.44
= 0.83
= 8.16
= 1.11
Depth (ft)
4.00
c91
MIX
X
1.00
MIX

Channel Report
Hydraflow Express Extension forAutodesk® Civil 3138 by Autodesk, Inc.
Outlet Swale #2 w/ Turf Matting (curled wood)
Trapezoidal
Bottom Width (ft)
= 3.00
Side Slopes (z:1)
= 3.00, 3.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 240.00
Slope (%)
= 9.00
N-Value
= 0.066
Calculations
Compute by:
Known Q
Known Q (cfs)
= 17.48
Elev (ft)
243.00
242.50
242.00
241.50
241.00
240.50
240.00
239.50
0
2 4 6
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
Friday, Nov 11 2022
= 0.77
= 17.48
= 4.09
= 4.28
= 7.87
= 0.79
= 7.62
= 1.05
Depth (ft)
3.00
2.50
2.00
1.50
1.00
0.50
0.00
-0.50
8 10 12 14 16 18 20
Raa(-h if )

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Outlet Swale #3 w/ Turf Matting (curled wood)
Trapezoidal
Bottom Width (ft)
= 3.00
Side Slopes (z:1)
= 3.00, 3.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 248.00
Slope (%)
= 8.25
N-Value
= 0.066
Calculations
Compute by:
Known Q
Known Q (cfs)
= 4.77
Elev (ft)
251.00
250.50
250.00
249.50
249.00
248.50
248.00
247.50
0
2 4 6
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
Friday, Nov 11 2022
= 0.40
= 4.770
= 1.68
= 2.84
= 5.53
= 0.38
= 5.40
= 0.53
Depth (ft)
3.00
2.50
2.00
1.50
0.50
0.00
-0.50
8 10 12 14 16 18 20
Rparh lft]

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Outlet Swale #4 w/ Turf Matting (curled wood)
Trapezoidal
Bottom Width (ft)
= 3.00
Side Slopes (z:1)
= 3.00, 3.00
Total Depth (ft)
= 2.50
Invert Elev (ft)
= 237.00
Slope (%)
= 7.00
N-Value
= 0.066
Calculations
Compute by:
Known Q
Known Q (cfs)
= 20.06
Elev (ft)
240.00
239.50
239.00
238.50
238.00
237.50
237.00
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
Friday, Nov 112022
= 0.87
= 20.06
= 4.88
= 4.11
= 8.50
= 0.85
= 8.22
= 1.13
Depth (ft)
3.00
2.50
2.00
1.50
1.00
0.50
M
236.50 ' ' ' ' ' 1 1 1 1 - I i -0.50
0 2 4 6 8 10 12 14 16 18 20 22
Raarh (ft)

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3M by Autodesk, Inc.
Outlet Swale #5 w/ Turf Matting (curled wood)
Trapezoidal
Bottom Width (ft)
= 3.00
Side Slopes (z:1)
= 3.00, 3.00
Total Depth (ft)
= 1.50
Invert Elev (ft)
= 228.00
Slope (%)
= 7.00
N-Value
= 0.066
Calculations
Compute by:
Known Q
Known Q (cfs)
= 9.98
Elev (ft)
230.00
229.50
229.00
228.50
228.00
227.50
0
Section
2 4 6 8
RRarrh fffl
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
10 12
14
Friday, Nov 112022
= 0.61
= 9.980
= 2.95
= 3.39
= 6.86
= 0.58
= 6.66
= 0.79
Depth (ft)
2.00
1.50
1.00
0.50
W I I,

Channel Report
Hydraflow Express Extension forAutodesk® Civil 3D® by Autodesk, Inc.
Friday, Nov 112022
Outlet Swale #6 w/ Turf Matting (curled wood)
Trapezoidal
Highlighted
Bottom Width (ft) = 3.00
Depth (ft)
= 0.87
Side Slopes (z:1) = 3.00, 3.00
Q (cfs)
= 21.06
Total Depth (ft) = 1.50
Area (sqft)
= 4.88
Invert Elev (ft) = 229.00
Velocity (ft/s)
= 4.31
Slope (%) = 7.75
Wetted Perim (ft)
= 8.50
N-Value = 0.066
Crit Depth, Yc (ft)
= 0.87
Top Width (ft)
= 8.22
Calculations
EGL (ft)
= 1.16
Compute by: Known Q
Known Q (cfs) = 21.06
Elev (ft)
231.00
230.50
230.00
229.50
229.00
228.50
0
2 4 6
Section
8
Raarh (ft)
10 12 14
Depth (ft)
2.00
1.50
1.00
0.50

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Outlet Swale #7 w/ Turf Matting (curled wood)
Trapezoidal
Bottom Width (ft)
= 3.00
Side Slopes (z:1)
= 3.00, 3.00
Total Depth (ft)
= 3.50
Invert Elev (ft)
= 228.10
Slope (%)
= 5.75
N-Value
= 0.066
Calculations
Compute by:
Known Q
Known Q (cfs)
= 22.66
Elev (ft)
232.00
231.00
230.00
229.00
228.00
227.00
0
5 10
Section
15 20
Rpnr-h (ffl
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (fUs)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
25
W1
Friday, Nov 11 2022
= 0.97
= 22.66
= 5.73
= 3.95
= 9.13
= 0.90
= 8.82
= 1.21
Depth (ft)
3.90
2.90
1.90
M
-0.10

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Outlet Swale #8 w/ Turf Matting (curled wood)
Trapezoidal
Bottom Width (ft)
= 3.00
Side Slopes (z:1)
= 3.00, 3.00
Total Depth (ft)
= 1.75
Invert Elev (ft)
= 223.00
Slope (%)
= 4.10
N-Value
= 0.066
Calculations
Compute by:
Known Q
Known Q (cfs)
= 27.62
Elev (ft)
225.00
224.50
224.00
223.50
223.00
222.50
0
2 4 6
Section
8 10
RParh lt=F1
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
12 14
16
Friday, Nov 11 2022
= 1.16
= 27.62
= 7.52
= 3.67
= 10.34
= 1.00
= 9.96
= 1.37
Depth (ft)
2.00
1.50
0.50
M

Channel Report
Hydraflow Express Extension for Autodesk® Civil 31® by Autodesk, Inc.
Swale #9 Rhum 4+50 R
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 250.60
Slope (%)
= 1.25
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 2.74
Elev (ft)
253.00
252.50
252.00
251.50
251.00
250.50
250.00
0
2 4 6
Section
8 10
Rparh (ft)
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.62
Q (cfs)
= 2.740
Area (sqft)
= 1.35
Velocity (fVs)
= 2.04
Wetted Perim (ft)
= 4.52
Crit Depth, Yc (ft)
= 0.53
Top Width (ft)
= 4.34
EGL (ft)
= 0.68
12
Depth (ft)
2.40
1.90
1.40
ME
0.40
PAR
-0.60
14 16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3138 by Autodesk, Inc.
Swale #10 Rhum
4+50 L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 250.60
Slope (%)
= 1.25
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 4.26
Elev (ft)
253.00
252.50
252.00
251.50
251.00
250.50
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.73
Q (cfs)
= 4.260
Area (sqft)
= 1.87
Velocity (fUs)
= 2.28
Wetted Perim (ft)
= 5.32
Crit Depth, Yc (ft)
= 0.63
Top Width (ft)
= 5.11
EGL (ft)
= 0.81
2 4 6 8 10 12
Raarh lfll
14 16
Depth (ft)
2.40
1.90
1.40
e •�
0.40
-0.10

Channel Report
Hydraflow Express Extension forAutodesk® Civil 3130 by Autodesk, Inc.
Swale #11 Rhum
4+80 L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 250.60
Slope (%)
= 0.75
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 6.70
Elev (ft)
253.00
252.50
252.00
251.50
251.00
250.50
250.00
0
2 4 6
Section
8 10
RPar:h (ft)
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.95
Q (cfs)
= 6.700
Area (sqft)
= 3.16
Velocity (fUs)
= 2.12
Wetted Perim (ft)
= 6.92
Crit Depth, Yc (ft)
= 0.75
Top Width (ft)
= 6.65
EGL (ft)
= 1.02
Depth (ft)
2.40
1.90
1.40
M
0.40
-0.10
-0.60
12 14 16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3138 by Autodesk, Inc.
Swale #12 Rhum
4+80 R
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 250.60
Slope (%)
= 0.75
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 2.55
Elev (ft)
253.00
252.50
252.00
251.50
251.00
250.50
250.00
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.66
Q (cfs)
= 2.550
Area (sqft)
= 1.52
Velocity (ft/s)
= 1.67
Wetted Perim (ft)
= 4.81
Crit Depth, Yc (ft)
= 0.51
Top Width (ft)
= 4.62
EGL (ft)
= 0.70
2 4 6 8 10 12 14
Reach (ft)
Depth (ft)
2.40
1.90
1.40
•1
-0.10
-0.60
16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Thursday, Nov 10 2022
Swale #13 Between
86/87 (Portion of Outlet
Swale #1 w/ turf matting)
Trapezoidal
Highlighted
Bottom Width (ft)
= 3.00
Depth (ft)
= 0.85
Side Slopes (z:1)
= 3.00, 3.00
Q (cfs)
= 19.24
Total Depth (ft)
= 2.50
Area (sqft)
= 4.72
Invert Elev (ft)
= 244.00
Velocity (ft/s)
= 4.08
Slope (%)
= 4.50
Wetted Perim (ft)
= 8.38
N-Value
= 0.052
Crit Depth, Yc (ft)
= 0.83
Top Width (ft)
= 8.10
Calculations
EGL (ft)
= 1.11
Compute by:
Known Q
Known Q (cfs)
= 19.24
Elev (ft)
Section
247.00
246.50
246.00
245.50
245.00
Q
244.50
244.00
243.50
Depth (ft)
3.00
2.50
2.00
1.50
1.00
0.50
W.INN.
2 4 6 8 10 12 14 16 18 20 22
Rearh (ft)

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Swale #14 Rhum
Sta 8+70 L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 253.35
Slope (%)
= 0.75
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 9.73
Elev (ft)
256.00
255.50
255.00
254.50
254.00
253.50
253.00
252.50
0
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
2 4 6 8 10 12 14 16
Rpnr_h (ft)
Thursday, Nov 10 2022
= 1.09
= 9,730
= 4.16
= 2.34
= 7.94
= 0.87
= 7.63
= 1.18
Depth (ft)
2.65
2.15
1.65
1.15
0.65
0.15
-0.35
-0.85
18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Swale #15 Rhum
Sta 10+501-
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 254.80
Slope (%)
= 2.52
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 2.16
Elev (ft)
257.00
256.50
256.00
255.50
255.00
254.50
254.00
0
2 4 6
Section
8 10
Reach (ft)
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.50
Q (cfs)
= 2.160
Area (sqft)
= 0.87
Velocity (fUs)
= 2.47
Wetted Perim (ft)
= 3.64
Crit Depth, Yc (ft)
= 0.48
Top Width (ft)
= 3.50
EGL (ft)
= 0.59
12 14 16
Depth (ft)
2.20
1.70
1.20
0.70
0.20
-0.30

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3130 by Autodesk, Inc.
Swale #16 Rhum
Sta 10+50R
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 254.80
Slope (%)
= 2.52
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 2.29
Elev (ft)
257.00
256.50
256.00
255.50
255.00
254.50
254.00
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.51
Q (cfs)
= 2.290
Area (sqft)
= 0.91
Velocity (ft/s)
= 2.52
Wetted Perim (ft)
= 3.72
Crit Depth, Yc (ft)
= 0.49
Top Width (ft)
= 3.57
EGL (ft)
= 0.61
2 4 6 8 10 12
F?aarh lffl
14
Depth (ft)
2.20
1.70
1.20
0.70
0.20
-0.30
-0.80
16 18

Channel Report
Hydraflow Express Extension forAutodesk® Civil 3D® by Autodesk, Inc.
Swale #17 New Kirk Sta 3+001-
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 252.30
Slope (%)
= 0.30
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 5.89
Elev (ft)
255.00
254.50
254.00
253.50
253.00
252.50
252.00
251.50
0
2 4 6
Section
8 10
Reach (ft)
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
12 14
16
Thursday, Nov 10 2022
= 1.07
= 5.890
= 4.01
= 1.47
= 7.80
= 0.71
= 7.49
= 1.10
Depth (ft)
2.70
2.20
1.70
1.20
0.70
0.20
--- -0.80
18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3136 by Autodesk, Inc.
Swale #18 New Kirk Sta 3+OOR
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Bev (ft)
= 252.30
Slope (%)
= 0.30
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 11.58
Elev (ft)
255.00
254.50
254.00
253.50
253.00
252.50
252.00
251.50
0
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
2 4 6 8 10 12 14 16
Rcarh ffFl
Thursday, Nov 10 2022
= 1.38
= 11.58
= 6.67
= 1.74
= 10.05
= 0.93
= 9.66
= 1.43
Depth (ft)
2.70
2.20
1.70
1.20
0.70
0.20
-0.30
-0.80
18

Channel Report
Hydraflow Express Extension forAutodesk® Civil 3138 by Autodesk, Inc.
Swale #19 Rhum
Sta 18+501-
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 254.15
Slope (%)
= 1.25
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 2.89
Elev (ft)
257.00
256.50
256.00
255.50
255.00
254.50
254.00
253.50
0
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
2 4 6 8 10 12 14 16
Raarh fftl
Thursday, Nov 10 2022
= 0.63
= 2.890
= 1.39
= 2.08
= 4.59
= 0.54
= 4.41
= 0.70
Depth (ft)
2.85
2.35
1.85
1.35
0.85
0.35
-0.15
-0.65
18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3138 by Autodesk, Inc.
Swale #20 Rhum
Sta 18+50R
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 254.15
Slope (%)
= 1.25
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 1.88
Elev (ft)
257.00
256.50
256.00
255.50
255.00
254.50
254.00
253.50
0
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
2 4 6 8 10 12 14 16
Raarh tfFl
Thursday, Nov 10 2022
= 0.54
= 1.880
= 1.02
= 1.84
= 3.93
= 0.45
= 3.78
= 0.59
Depth (ft)
2.85
2.35
1.85
1.35
0.85
0.35

Channel Report
Hydraflow Express Extension forAutodesk® Civil 3130 by Autodesk, Inc.
Swale #21 Rhum
Sta 20+80L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 246.60
Slope (%)
= 4.00
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 1.79
Elev (ft)
249.00
248.50
248.00
247.50
247.00
246.50
246.00
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.42
Q (cfs)
= 1.790
Area (sqft)
= 0.62
Velocity (ft/s)
= 2.90
Wetted Perim (ft)
= 3.06
Crit Depth, Yc (ft)
= 0.44
Top Width (ft)
= 2.94
EGL (ft)
= 0.55
2 4 6 8 10 12
RPar.h (ft)
14
Depth (ft)
2.40
MR
1.40
•X
0.40
-0.10
-0.60
16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3130 by Autodesk, Inc.
Swale #22 Rhum
Sta 20+8011
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 246.60
Slope (%)
= 4.00
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 0.52
Elev (ft)
249.00
248.50
248.00
247.50
247.00
246.50
246.00
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.27
Q (cfs)
= 0.520
Area (sqft)
= 0.26
Velocity (ft/s)
= 2.04
Wetted Perim (ft)
= 1.97
Crit Depth, Yc (ft)
= 0.27
Top Width (ft)
= 1.89
EGL (ft)
= 0.33
2 4 6 8 10 12
Roarh lftl
Depth (ft)
2.40
1.90
1.40
M
0.40
-0.10
-0.60
14 16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Swale #23 Rhum
Sta 22+73L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 242.00
Slope (%)
= 2.25
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 7.46
Elev (ft)
245.00 -
244.50
244.00
243.50
243.00
242.50
242.00
241.50
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.80
Q (cfs)
= 7.460
Area (sgft)
= 2.24
Velocity (ft/s)
= 3.33
Wetted Perim (ft)
= 5.83
Crit Depth, Yc (ft)
= 0.78
Top Width (ft)
= 5.60
EGL (ft)
= 0.97
2 4 6 8 10 12 14
Ppwh M
Depth (ft)
3.00
2.50
2.00
1.50
1.00
0.50
0.00
-0.50
16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3130 by Autodesk, Inc. Friday, Nov 112022
Swale #23A (portion of Swale #23's area between Lots 18 & 19)
Trapezoidal
Highlighted
Bottom Width (ft)
= 3.00
Depth (ft)
= 0.30
Side Slopes (z:1)
= 3.00, 3.00
Q (cfs)
= 4.810
Total Depth (ft)
= 5.00
Area (sqft)
= 1.17
Invert Elev (ft)
= 245.00
Velocity (ft/s)
= 4.11
Slope (%)
= 6.50
Wetted Perim (ft)
= 4.90
N-Value
= 0.035
Crit Depth, Yc (ft)
= 0.38
Top Width (ft)
= 4.80
Calculations
EGL (ft)
= 0.56
Compute by:
Known Q
Known Q (cfs)
= 4.81
Elev (ft)
251.00 -
250.00
249.00
248.00
247.00
246.00
245.00
244.00
0
Section
5 10 15 20 25 30 35 40
Raarh lfFl
Depth (ft)
6.00
5.00
C11I17
3.00
2.00
1.00
0.00
-1.00
45

Channel Report
Hydraflow Express Extension forAutodesk® Civil 3130 by Autodesk, Inc.
Swale #24 Rhum
Sta 22+7311
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 242.00
Slope (%)
= 2.25
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
- 1.27
Elev (ft)
245.00
244.50
244.00
243.50
243.00
242.50
242.00
241.50
0
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
2 4 6 8 10 12 14 16
Thursday, Nov 10 2022
= 0.42
= 1.270
= 0.62
= 2.06
= 3.06
= 0.39
= 2.94
= 0.49
Depth (ft)
3.00
2.50
M111111]
1.50
1.00
0.50
0.00
-0.50
18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Swale #25 Rhum
Sta 22+93L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 242.00
Slope (%)
= 2.95
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 8.99
Elev (ft)
245.00
244.50
244.00
243.50
243.00
242.50
242.00
241.50
0
Section
Highlighted
Depth (ft)
Q (Cfs)
Area (sqft)
Velocity (fUs)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
2 4 6 8 10 12 14 16
Pow-h (f 1
Thursday, Nov 10 2022
= 0.82
= 8.990
= 2.35
= 3.82
= 5.97
= 0.84
= 5.74
= 1.05
Depth (ft)
3.00
1.50
1.00
111Wi7

Channel Report
Hydraflow Express Extension forAutodesk® Civil MOD by Autodesk, Inc.
Swale #26 Rhum
Sta 22+93R
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 242.00
Slope (%)
= 2.95
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 2.34
Elev (ft)
245.00
244.50
244.00
243.50
243.00
242.50
242.00
241.50
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.50
Q (cfs)
= 2.340
Area (sqft)
= 0.87
Velocity (fUs)
= 2.67
Wetted Perim (ft)
= 3.64
Crit Depth, Yc (ft)
= 0.49
Top Width (ft)
= 3.50
EGL (ft)
= 0.61
2 4 6 8 10 12 14
Reach (ft)
Depth (ft)
3.00
2.50
2.00
1.50
1.00
0.50
0.00
-0.50
16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3130 by Autodesk, Inc.
Swale #27 Rhum
Sta 25+501-
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 248.60
Slope (%)
= 0.50
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 6.20
Elev (ft)
251.00
250.50
250.00
249.50
249.00
248.50
248.00
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.99
Q (cfs)
= 6.200
Area (sqft)
= 3.43
Velocity (ft/s)
= 1.81
Wetted Perim (ft)
= 7.21
Crit Depth, Yc (ft)
= 0.73
Top Width (ft)
= 6.93
EGL (ft)
= 1.04
2 4 6 8 10 12 14
Pin---Ae+h ff 1
Depth (ft)
2.40
1.90
1.40
M
0.40
M111

Channel Report
Hydraflow Express Extension forAutodesk® Civil 3130 byAutodesk, Inc.
Swale #28 Rhum
Sta 25+5011
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 248.60
Slope (%)
= 0.50
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 1.67
Elev (ft)
251.00
250.50
250.00
249.50
249.00
248.50
248.00
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.61
Q (cfs)
= 1.670
Area (sqft)
= 1.30
Velocity (fUs)
= 1.28
Wetted Perim (ft)
= 4.44
Crit Depth, Yc (ft)
= 0.43
Top Width (ft)
= 4.27
EGL (ft)
= 0.64
2 4 6 8 10 12
RParh (fFl
14
Depth (ft)
2.40
1.90
1.40
M
0.40
-0.10
-0.60
16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 31M by Autodesk, Inc.
Swale #29 Brooks Hill Sta 2+20R
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 246.75
Slope (%)
= 1.75
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 1.93
Elev (ft)
249.00
248.50
248.00
247.50
247.00
246.50
246.00
0
2 4 6
Section
8 10
Rcnrh fffl
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.51
Q (cfs)
= 1.930
Area (sqft)
= 0.91
Velocity (ft/s)
= 2.12
Wetted Perim (ft)
= 3.72
Crit Depth, Yc (ft)
= 0.46
Top Width (ft)
= 3.57
EGL (ft)
= 0.58
12
Depth (ft)
2.25
1.75
1.25
0.75
0.25
-0.25
-0.75
14 16 18

Channel Report
Hydraflow Express Extension forAutodesk® Civil 3D® by Autodesk, Inc.
Swale #30 Brooks Hill Sta 2+20L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 246.75
Slope (%)
= 1.75
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 1.83
Elev (ft)
249.00
248.50
248.00
247.50
247.00
246.50
246.00
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.50
Q (cfs)
= 1.830
Area (sqft)
= 0.87
Velocity (ft/s)
= 2.09
Wetted Perim (ft)
= 3.64
Crit Depth, Yc (ft)
= 0.45
Top Width (ft)
= 3.50
EGL (ft)
= 0.57
2 4 6 8 10 12 14
Depth (ft)
2.25
1.75
1.25
0.75
0.25
-0.25
-0.75
16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Swale #31 Brooks Hill Sta 2+40R
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 246.75
Slope (%)
= 0.50
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 2.16
Elev (ft)
249.00
248.50
248.00
247.50
247.00
246.50
246.00
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.67
Q (cfs)
= 2.160
Area (sqft)
= 1.57
Velocity (fUs)
= 1.37
Wetted Perim (ft)
= 4.88
Crit Depth, Yc (ft)
= 0.48
Top Width (ft)
= 4.69
EGL (ft)
= 0.70
2 4 6 8 10 12 14 16
Ro!Mrh M1
Depth (ft)
2.25
1.75
1.25
0.75
0.25
-0.25
-0.75
18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Swale #32 Brooks Hill Sta 2+40L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 246.75
Slope (%)
= 0.50
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 1.69
Elev (ft)
249.00
248.50
248.00
247.50
247.00
246.50
246.00
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.61
Q (cfs)
= 1.690
Area (sqft)
= 1.30
Velocity (ft/s)
= 1.30
Wetted Perim (ft)
= 4.44
Crit Depth, Yc (ft)
= 0.43
Top Width (ft)
= 4.27
EGL (ft)
= 0.64
2 4 6 8 10 12 14
Raarh If l
`[
Depth (ft)
2.25
1.75
1.25
0.75
0.25
-0.25
-0.75
18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Swale #33 Rhum
Sta 32+001-
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 248.97
Slope (%)
= 0.50
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 1.53
Elev (ft)
251.00
250.50
250.00
249.50
249.00
248.50
248.00
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.59
Q (cfs)
= 1.530
Area (sqft)
= 1.22
Velocity (ft/s)
= 1.26
Wetted Perim (ft)
= 4.30
Crit Depth, Yc (ft)
= 0.42
Top Width (ft)
= 4.13
EGL (ft)
= 0.61
2 4 6 8 10 12
Rinc-An 9 lffl
14
Depth (ft)
2.03
1.53
1.03
0.53
0.03
-0.47
-0.97
16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Swale #34 Rhum
Sta 32+OOR
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 248.97
Slope (%)
= 0.50
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 0.61
Elev (ft)
251.00
250.50
250.00
249.50
249.00
248.50
248.00
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.42
Q (cfs)
= 0.610
Area (sgft)
= 0.62
Velocity (fVs)
= 0.99
Wetted Perim (ft)
= 3.06
Crit Depth, Yc (ft)
= 0.29
Top Width (ft)
= 2.94
EGL (ft)
= 0.44
2 4 6 8 10 12
Raarh (fFl
Depth (ft)
2.03
1.53
1.03
0.53
0.03
-0.47
-0.97
14 16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Swale #35 Rhum
Sta 34+50L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 239.65
Slope (%)
= 4.00
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 3.08
Elev (ft)
242.00
241.50
241.00
240.50
240.00
239.50
239.00
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.52
Q (cfs)
= 3.080
Area (sqft)
= 0.95
Velocity (ft/s)
= 3.25
Wetted Perim (ft)
= 3.79
Crit Depth, Yc (ft)
= 0.55
Top Width (ft)
= 3.64
EGL (ft)
= 0.68
2 4 6 8 10 12
Roarh (fFl
14
Depth (ft)
2.35
1.85
1.35
0.85
0.35
-0.15
-0.65
16 18

Channel Report
Hydraflow Express Extension forAutodesk® Civil 3D® byAutodesk, Inc.
Swale #36 Rhum
Sta 34+50R
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 239.65
Slope (%)
= 4.00
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 2.25
Elev (ft)
Section
242.00
241.50
241.00
240.50
240.00
239.50
239.00
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.46
Q (cfs)
= 2.250
Area (sqft)
= 0.74
Velocity (ft/s)
= 3.04
Wetted Perim (ft)
= 3.35
Crit Depth, Yc (ft)
= 0.49
Top Width (ft)
= 3.22
EGL (ft)
= 0.60
Depth (ft)
2.35
1.85
1.35
0.85
0.35
-0.15
R.t--;U�
0 2 4 6 8 10 12 14 16 18 v vv
Raarh ffF

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3130 by Autodesk, Inc.
Swale #37 Rhum
Sta 37+30L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 235.00
Slope (%)
= 1.48
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 8.35
Elev (ft)
238.00
237.50
237.00
236.50
236.00
235.50
235.00
234.50
0
2 4 6
Section
8 10
I?n!Mrh (f+l
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
12 14
16
Thursday, Nov 10 2022
= 0.90
= 8.350
= 2.83
= 2.95
= 6.56
= 0.82
= 6.30
= 1.03
Depth (ft)
3.00
2.50
2.00
1.50
1.00
0.50
W IC

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3130 by Autodesk, Inc.
Swale #38 Rhum
Sta 37+30R
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 235.00
Slope (%)
= 1.48
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 4.71
Elev (ft)
238.00
237.50
237.00
236.50
236.00
235.50
235.00
234.50
0
2 4 6
Section
8 10
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
12 14
16
Thursday, Nov 10 2022
= 0.73
= 4.710
= 1.87
= 2.53
= 5.32
= 0.65
= 5.11
= 0.83
Depth (ft)
3.00
2.50
2.00
1.50
1.00
0.50
0.00

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3136 by Autodesk, Inc.
Swale #39 Rhum
Sta 37+501-
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 235.00
Slope (%)
= 2.17
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 1.97
Elev (ft)
238.00
237.50
237.00
236.50
236.00
235.50
235.00
234.50
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.49
Q (cfs)
= 1.970
Area (sqft)
= 0.84
Velocity (ft/s)
= 2.34
Wetted Perim (ft)
= 3.57
Crit Depth, Yc (ft)
= 0.46
Top Width (ft)
= 3.43
EGL (ft)
= 0.58
2 4 6 8 10 12
I?nnrh IfM
Depth (ft)
3.00
2.50
2.00
1.50
1.00
0.50
0.00
-0.50
14 16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil MOD by Autodesk, Inc.
Swale #40 Rhum
Sta 37+5011
Triangular
Side Slopes (z:1)
- 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 235.00
Slope (%)
= 2.17
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 5.86
Elev (ft)
238.00
237.50
237.00
236.50
236.00
235.50
235.00
234.50
0
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
2 4 6 8 10 12 14 16
RParh lffl
Thursday, Nov 10 2022
= 0.74
= 5.860
= 1.92
= 3.06
= 5.39
= 0.71
= 5.18
= 0.89
Depth (ft)
3.00
2.50
2.00
1.50
1.00
0.50
0.00
-0.50
18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3139) by Autodesk, Inc.
Swale #41 Rhum
Sta 39+001-
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 238.10
Slope (%)
= 0.50
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 1.58
Elev (ft)
241.00
240.50
240.00
239.50
239.00
238.50
238.00
237.50
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.60
Q (cfs)
= 1.580
Area (sqft)
= 1.26
Velocity (ft/s)
= 1.25
Wetted Perim (ft)
= 4.37
Crit Depth, Yc (ft)
= 0.42
Top Width (ft)
= 4.20
EGL (ft)
= 0.62
2 4 6 8 10 12 14
F?aarh (ft)
Depth (ft)
2.90
2.40
1.90
1.40
0.90
0.40
-0.10
-0.60
16 18

Channel Report
Hydraflow Express Extension forAutodesk® Civil 3D® by Autodesk, Inc.
Swale #42 Rhum
Sta 39+OOR
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 238.10
Slope (%)
= 0.50
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 4.81
Elev (ft)
241.00
240.50
240.00
239.50
M• I
238.50
238.00
23T50
0
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
2 4 6 8 10 12 14 16
Paarh If l
Thursday, Nov 10 2022
= 0.90
= 4.810
= 2.83
= 1.70
= 6.56
= 0.66
= 6.30
= 0.94
Depth (ft)
2.90
2.40
1.90
1.40
0.90
0.40
-0.10
-0.60
18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Swale #43 Rhum
Sta 42+75L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 244.45
Slope (%)
= 1.75
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 0.68
Elev (ft)
247.00
246.50
246.00
245.50
245.00
244.50
244.00
243.50
0
2 4 6
Section
8 10
Rparh lfFl
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
12 14
ill
Thursday, Nov 10 2022
= 0.35
= 0.680
= 0.43
= 1.59
= 2.55
= 0.30
= 2.45
= 0.39
Depth (ft)
2.55
2.05
1.55
1.05
0.55
0.05
-0.45

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Swale #44 Rhum
Sta 42+75R
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 244.45
Slope (%)
= 1.75
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 1.64
Elev (ft)
247.00
246.50
246.00
245.50
245.00
244.50
244.00
243.50
0
2 4 6
Section
8 10
C?d.--hrh lfM
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
12 14
16
Thursday, Nov 10 2022
= 0.48
= 1.640
= 0.81
= 2.03
= 3.50
= 0.43
= 3.36
= 0.54
Depth (ft)
2.55
2.05
1.55
1.05
0.55
0.05
-0.45

Channel Report
Hydraflow Express Extension forAutodesk® Civil 3130 byAutodesk, Inc.
Swale #45 Rhum
Sta 46+48R
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 242.90
Slope (%)
= 3.75
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 0.93
Elev (ft)
245.00
244.50
244.00
243.50
243.00
242.50
242.00
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.34
Q (cfs)
= 0.930
Area (sqft)
= 0.40
Velocity (fUs)
= 2.30
Wetted Perim (ft)
= 2.48
Crit Depth, Yc (ft)
= 0.34
Top Width (ft)
= 2.38
EGL (ft)
= 0.42
2 4 6 8 10 12
Rc7r+h lfFl
14 16
Depth (ft)
2.10
1.60
1.10
A .e
0.10
-0.40

Channel Report
Hydraflow Express Extension forAutodesk® Civil 3D® by Autodesk, Inc.
Swale #46 Rhum
Sta 47+70R
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 238.40
Slope (%)
= 3.75
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 0.96
Elev (ft)
241.00
240.50
240.00
239.50
239.00
238.50
238.00
237.50
0
2 4 6
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.34
Q (cfs)
= 0.960
Area (sqft)
= 0.40
Velocity (ft/s)
= 2.37
Wetted Perim (ft)
= 2.48
Crit Depth, Yc (ft)
= 0.35
Top Width (ft)
= 2.38
EGL (ft)
= 0.43
Section Depth (ft)
2.60
2.10
1.60
1.10
0.60
0.10
-0.40
-0.90
8 10 12 14 16 18
R=arh rftl f

Channel Report
Hydraflow Express Extension for Autodesk® Civil 31® by Autodesk, Inc.
Swale #47 Rhum
Sta 48+8611
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 235.50
Slope (%)
= 3.75
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 6.22
Elev (ft)
238.00
237.50
237.00
236.50
236.00
235.50
235.00
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.68
Q (cfs)
= 6.220
Area (sqft)
= 1.62
Velocity (ft/s)
= 3.84
Wetted Perim (ft)
= 4.95
Crit Depth, Yc (ft)
= 0.73
Top Width (ft)
= 4.76
EGL (ft)
= 0.91
2 4 6 8 10 12
F?aarh !#1
Depth (ft)
2.50
2.00
1.50
1.00
0.50
-0.50
14 16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3136 by Autodesk, Inc.
Swale #48 Rhum
Sta 49+06R
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 235.50
Slope (%)
= 5.25
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 5.36
Elev (ft)
Section
238.00
237.50
237.00
236.50
236.00
235.50
235.00
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.61
Q (cfs)
= 5.360
Area (sqft)
= 1.30
Velocity (ft/s)
= 4.12
Wetted Perim (ft)
= 4.44
Crit Depth, Yc (ft)
= 0.69
Top Width (ft)
= 4.27
EGL (ft)
= 0.87
Depth (ft)
2.50
2.00
1.50
1.00
0.50
IM1111111111111
R.�
2 4 6 8 10 12 14 16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3130 by Autodesk, Inc.
Swale #49 Rhum
Sta 50+70R
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 241.50
Slope (%)
= 5.25
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 1.23
Elev (ft)
244.00
243.50
243.00
242.50
242.00
241.50
241.00 -
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.35
Q (cfs)
= 1.230
Area (sqft)
= 0.43
Velocity (ft/s)
= 2.87
Wetted Perim (ft)
= 2.55
Crit Depth, Yc (ft)
= 0.38
Top Width (ft)
= 2.45
EGL (ft)
= 0.48
2 4 6 8 10 12 14
Ra-nrh ff+l
Depth (ft)
2.50
2.00
1.50
1.00
0.50
M
-0.50
16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3130 by Autodesk, Inc.
Swale #50 Rhum
Sta 50+70L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 241.50
Slope (%)
= 5.25
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 0.54
Elev (ft)
Section
244.00
243.50
243.00
242.50
242.00
241.50
241.00
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.26
Q (cfs)
= 0.540
Area (sqft)
= 0.24
Velocity (ft/s)
= 2.28
Wetted Perim (ft)
= 1.89
Crit Depth, Yc (ft)
= 0.28
Top Width (ft)
= 1.82
EGL (ft)
= 0.34
Depth (ft)
2.50
2.00
1.50
1.00
0.50
Bxfil�
_n r1n
2 4 6
8 10 12
pnorh f++l
14 16 18 v yv

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3130 by Autodesk, Inc.
Swale #51 Rhum
Sta 49+06L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 235.50
Slope (%)
= 5.25
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 0.95
Elev (ft)
238.00
237.50
237.00
236.50
236.00
235.50
235.00
0
2 4 6
Section
8 10
Roar-h lfFl
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.32
Q (cfs)
= 0.950
Area (sqft)
= 0.36
Velocity (ft/s)
= 2.65
Wetted Perim (ft)
= 2.33
Crit Depth, Yc (ft)
= 0.35
Top Width (ft)
= 2.24
EGL (ft)
= 0.43
12 14
Depth (ft)
2.50
2.00
1.50
1.00
0.50
we
-0.50
16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil MID by Autodesk, Inc.
Swale #52 Rhum
Sta 47+70L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 235.50
Slope (%)
= 3.75
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 0.25
Elev (ft)
238.00
237.50
237.00
236.50
236.00
235.50
235.00
0
Section
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.21
Q (cfs)
= 0.250
Area (sqft)
= 0.15
Velocity (ft/s)
= 1.62
Wetted Perim (ft)
= 1.53
Crit Depth, Yc (ft)
= 0.20
Top Width (ft)
= 1.47
EGL (ft)
= 0.25
2 4 6 8 10 12
Raar•h Ift)
14
Depth (ft)
2.50
r !M
1.50
1.00
0.50
M
-0.50
16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3139) by Autodesk, Inc.
Swale #53 Rhum
Sta 48+86L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 235.50
Slope (%)
= 3.75
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 0.56
Elev (ft)
238.00
237.50
237.00
236.50
236.00
235.50
235.00
0
2 4 6
Section
8 10
Rparh (ft)
Thursday, Nov 10 2022
Highlighted
Depth (ft)
= 0.28
Q (cfs)
= 0.560
Area (sqft)
= 0.27
Velocity (fUs)
= 2.04
Wetted Perim (ft)
= 2.04
Crit Depth, Yc (ft)
= 0.28
Top Width (ft)
= 1.96
EGL (ft)
= 0.34
12
Depth (ft)
2.50
2.00
1.50
1.00
0.50
110111
-0.50
14 16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Swale #54 Wolf Pine Sta 3+20R
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 234.00
Slope (%)
= 3.50
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 1.95
Elev (ft)
237.00
236.50
236.00
235.50
235.00
234.50
234.00
233.50
0
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (fUs)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
2 4 6 8 10 12 14 16
Thursday, Nov 10 2022
= 0.45
= 1.950
= 0.71
= 2.75
= 3.28
= 0.46
= 3.15
= 0.57
Depth (ft)
3.00
2.50
2.00
1.50
1.00
0.50

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3136 by Autodesk, Inc.
Swale #55 Wolf Pine Sta 3+20L
Triangular
Side Slopes (z:1)
= 3.00, 4.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 234.00
Slope (%)
= 2.50
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 1.20
Elev (ft)
237.00
236.50
236.00
235.50
235.00
234.50
234.00
233.50
0
2 4 6
Section
8 10
Ganrh if %
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (fUs)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
12 14
16
Thursday, Nov 10 2022
= 0.40
= 1.200
= 0.56
= 2.14
= 2.91
= 0.38
= 2.80
= 0.47
Depth (ft)
3.00
2.50
2.00
1.50
1.00
0.50
NOR

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Swale #56 Lots 43/44/45 Sta 1+00 (portion of
Outlet Swale #7)
Trapezoidal
Highlighted
Bottom Width (ft)
= 3.00
Depth (ft)
Side Slopes (z:1)
= 3.00, 3.00
Q (cfs)
Total Depth (ft)
= 3.00
Area (sqft)
Invert Elev (ft)
= 234.00
Velocity (ft/s)
Slope (%)
= 1.00
Wetted Perim (ft)
N-Value
= 0.035
Crit Depth, Yc (ft)
Top Width (ft)
Calculations
EGL (ft)
Compute by:
Known Q
Known Q (cfs)
= 15.66
Elev (ft)
23a.00
237.00
236.00
235.00
234.00
233.00
0
Section
5 10 15 20 25 30
Ra-arh If )
Thursday, Nov 10 2022
= 0.91
= 15.66
= 5.21
= 3.00
= 8.76
= 0.74
= 8.46
= 1.05
Depth (ft)
4.00
3.00
2.00
1.00
M R1

Channel Report
Hydraflow Express Extension for Autodesk® Civil 31® by Autodesk, Inc. Thursday, Nov 10 2022
Swale #57 Lots 42/43/45 Sta 5+10 (portion of Outlet Swale #7)
Trapezoidal
Highlighted
Bottom Width (ft)
= 3.00
Depth (ft)
= 1.50
Side Slopes (z:1)
= 3.00, 3.00
Q (cfs)
= 22.18
Total Depth (ft)
= 3.00
Area (sqft)
= 11.25
Invert Elev (ft)
= 233.00
Velocity (ft/s)
= 1.97
Slope (%)
= 0.25
Wetted Perim (ft)
= 12.49
N-Value
= 0.035
Crit Depth, Yc (ft)
= 0.89
Top Width (ft)
= 12.00
Calculations
EGL (ft)
= 1.56
Compute by:
Known Q
Known Q (cfs)
= 22.18
Elev (ft)
237.00
236.00
235.00
234.00
233.00
232.00
0 5 10 15 20 25 30
Section
Depth (ft)
4.00
K 11
2.00
1.00
M1
-1.00
35

Channel Report
Hydraflow Express Extension forAutodesk® Civil 3138 by Autodesk, Inc.
Thursday, Nov 10 2022
Swale #58 Lots 42 Sta 5+95 (portion of Outlet Swale #7 w/ curled wood matting)
Trapezoidal
Highlighted
Bottom Width (ft)
= 3.00
Depth (ft)
= 0.97
Side Slopes (z:1)
= 3.00, 3.00
Q (cfs)
= 22.66
Total Depth (ft)
= 3.00
Area (sqft)
= 5.73
Invert Elev (ft)
= 228.10
Velocity (fUs)
= 3.95
Slope (%)
= 5.75
Wetted Perim (ft)
= 9.13
N-Value
= 0.066
Crit Depth, Yc (ft)
= 0.90
Top Width (ft)
= 8.82
Calculations
EGL (ft)
= 1.21
Compute by:
Known Q
Known Q (cfs)
= 22.66
Elev (ft)
232.00
231.00
230.00
229.00
228.00
227.00
0 5 10 15 20 25 30
RParh !ft]
Section
Depth (ft)
3.90
2.90
1.90
MR111
-0.10

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc. Thursday, Nov 10 2022
Swale #59 Lots 41/42 Sta 2+52 (portion of Outlet Swale #8)
Trapezoidal
Highlighted
Bottom Width (ft)
= 3.00
Depth (ft)
= 0.41
Side Slopes (z:1)
= 3.00, 3.00
Q (cfs)
= 4.950
Total Depth (ft)
= 3.00
Area (sqft)
= 1.73
Invert Elev (ft)
= 228.10
Velocity (ft/s)
= 2.85
Slope (%)
= 2.34
Wetted Perim (ft)
= 5.59
N-Value
= 0.035
Crit Depth, Yc (ft)
= 0.39
Top Width (ft)
= 5.46
Calculations
EGL (ft)
= 0.54
Compute by:
Known Q
Known Q (cfs)
= 4.95
Elev (ft)
232.00
231.00
230.00
229.00
228.00
227.00
0 5 10 15 20 25 30
Section
Depth (ft)
3.90
ON •I,
1.90
M •X
-0.10

Channel Report
Hydraflow Express Extension for Autodesk® Civil MOD by Autodesk, Inc.
Swale #60 Lots 60/61
Sta 1+35 (portion of Outlet
Swale #6)
Trapezoidal
Highlighted
Bottom Width (ft) =
3.00
Depth (ft)
Side Slopes (z:1) =
3.00, 3.00
Q (cfs)
Total Depth (ft) =
3.00
Area (sqft)
Invert Elev (ft) =
223.90
Velocity (ft/s)
Slope (%) =
0.30
Wetted Perim (ft)
N-Value =
0.035
Crit Depth, Yc (ft)
Top Width (ft)
Calculations
EGL (ft)
Compute by: Known
Q
Known Q (cfs) =
21.06
Elev (ft)
22f.00
226.00
225.00
224.00
223.00
222.00
0
Section
5 10 15 20 25 30
Gcnrh lff)
Thursday, Nov 10 2022
= 1.41
= 21.06
= 10.19
= 2.07
= 11.92
= 0.87
= 11.46
= 1.48
Depth (ft)
3.10
2.10
1.10
0.10
•s

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3138 by Autodesk, Inc.
Swale #61 Lots 66/67
Sta 2+00 (portion of Outlet
Swale #5)
Trapezoidal
Highlighted
Bottom Width (ft)
= 3.00
Depth (ft)
Side Slopes (z:1)
3.00, 3.00
Q (cfs)
Total Depth (ft)
= 3.00
Area (sqft)
Invert Elev (ft)
= 245.15
Velocity (ft/s)
Slope (%)
= 0.50
Wetted Perim (ft)
N-Value
= 0.035
Crit Depth, Yc (ft)
Top Width (ft)
Calculations
EGL (ft)
Compute by:
Known Q
Known Q (cfs)
= 8.26
Elev (ft)
249.00
248.00
247.00
246.00
245.00
244.00
0
Section
5 10
15
20
25 30
Ra'Mnh (4)
Friday, Nov 11 2022
= 0.79
= 8.260
= 4.24
= 1.95
= 8.00
= 0.52
= 7.74
= 0.85
Depth (ft)
3.85
2.85
1.85
0.85
-0.15
-1.15
35

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Swale #62 Lots 66/67 Sta 3+50 (portion of Outlet
Swale #5)
Trapezoidal
Highlighted
Bottom Width (ft)
= 3.00
Depth (ft)
Side Slopes (z:1)
= 3.00, 3.00
Q (cfs)
Total Depth (ft)
= 3.00
Area (sqft)
Invert Elev (ft)
= 238.63
Velocity (ft/s)
Slope (%)
= 4.35
Wetted Perim (ft)
N-Value
= 0.035
Crit Depth, Yc (ft)
Top Width (ft)
Calculations
EGL (ft)
Compute by:
Known Q
Known Q (cfs)
= 9.98
Elev (ft)
242.00
241.00
240.00
239.00
EI: 11
237.00
0
Section
5 10 15 20 25 30
Rciw-h lff'
Friday, Nov 11 2022
= 0.50
= 9.980
= 2.25
= 4.44
= 6.16
= 0.58
= 6.00
= 0.81
Depth (ft)
3.37
2.37
1.37
0.37
-0.63
-1.63
35

Channel Report
Hydraflow Express Extension for AutodeskOD Civil 3136 by Autodesk, Inc.
Swale #63 Rhum
Sta 53+80R
Triangular
Side Slopes (z:1)
= 4.00, 3.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 242.85
Slope (%)
= 3.75
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 2.13
Elev (ft)
245.00
244.50
244.00
243.50
243.00
242.50
242.00
0
Section
Friday, Nov 112022
Highlighted
Depth (ft)
= 0.46
Q (cfs)
= 2.130
Area (sqft)
= 0.74
Velocity (ft/s)
= 2.88
Wetted Perim (ft)
= 3.35
Crit Depth, Yc (ft)
= 0.48
Top Width (ft)
= 3.22
EGL (ft)
= 0.59
-------------
1-7
- ----------- 7-1
2 4 6 8 10 12 14
RAarh lfFl
Depth (ft)
2.15
1.65
1.15
0.65
0.15
-0.35
-0.85
16 18

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Swale #64 Rhum
Sta 53+80L
Triangular
Side Slopes (z:1)
= 4.00, 3.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 242.85
Slope (%)
= 3.75
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 0.70
Elev (ft)
245.00
244.50
244.00
243.50
243.00
242.50
242.00
0
2 4 6
Section
8 10
Reach (ft)
Friday, Nov 112022
Highlighted
Depth (ft)
= 0.30
Q (cfs)
= 0.700
Area (sqft)
= 0.32
Velocity (fUs)
= 2.22
Wetted Perim (ft)
= 2.19
Crit Depth, Yc (ft)
= 0.31
Top Width (ft)
= 2.10
EGL (ft)
= 0.38
12 14 16
Depth (ft)
2.15
1.65
1.15
0.65
0.15
-0.35

Culvert Crossing Calculations

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3130 by Autodesk, Inc.
Sinlge 18 inch RCP
Culvert - Brooks Hill Sta 2+30
Invert Elev Dn (ft)
= 246.05
Calculations
Pipe Length (ft)
= 40.00
Qmin (cfs)
Slope (%)
= 0.50
Qmax (cfs)
Invert Elev Up (ft)
= 246.25
Tailwater Elev (ft)
Rise (in)
= 18.0
Shape
= Circular
Highlighted
Span (in)
= 18.0
Qtotal (cfs)
No. Barrels
= 1
Qpipe (cfs)
n-Value
= 0.013
Qovertop (cfs)
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
HGL Up (ft)
Embankment
Hw Elev (ft)
Top Elevation (ft)
= 249.10
Hw/D (ft)
Top Width (ft)
= 20.00
Flow Regime
Crest Width (ft)
= 10.00
Elev (ft)
250.00
249.OD
248 .
247.00
246.0D
245.OD
V b I
Circular Culvert
Sinlge 16 inch RCP Culvert - Brooks Will Sfa 2+3D
1b 20 25 30 35 40 45 50 55
HGL Embank
Thursday, Nov 10 2022
= 0.00
= 4.09
= (dc+D)/2
= 4.09
= 4.09
= 0.00
= 2.85
= 4.45
= 247.19
= 247.02
= 247.35
= 0.73
= Inlet Control
Hw Dept ;ft,
3.75
2.75
1.75
0.75
-0.25
-1.25
60
Reach tft;

Culvert Report
Hydraflow Express Extension forAutodesk® Civil 3130 by Autodesk, Inc.
Single 18 inch RCP Culvert - Lighter Knot Sta 0+42
Invert Elev Dn (ft)
= 258.88
Calculations
Pipe Length (ft)
= 44.00
Qmin (cfs)
Slope (%)
= 0.50
Qmax (cfs)
Invert Elev Up (ft)
= 259.10
Tailwater Elev (ft)
Rise (in)
= 18.0
Shape
= Circular
Highlighted
Span (in)
= 18.0
Qtotal (cfs)
No. Barrels
= 1
Qpipe (cfs)
n-Value
= 0.013
Qovertop (cfs)
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
HGL Up (ft)
Embankment
Hw Elev (ft)
Top Elevation (ft)
= 261.30
Hw/D (ft)
Top Width (ft)
= 20.00
Flow Regime
Crest Width (ft)
= 10.00
Elev (ft)
262.DD
261.00
LOumv
255.C4
25840
257.DD
0
Single 18 inch RCP Culvert - Lighter Knot Sta 0+42
5 10 15 20 25 30 35 40 45 50 55 60
circularculvert HGL Embank
Thursday, Nov 10 2022
= 0.00
= 0.67
= (dc+D)/2
= 0.67
= 0.67
= 0.00
= 0.60
= 2.62
= 259.78
= 259.40
= 259.51
= 0.27
= Inlet Control
Hw Deptt. (ft)
2.90
1.9,
D.%
-0.10
-1.10
-2.10
65
Reach 4ft1

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Thursday, Nov 10 2022
Single 24 inch RCP
Culvert - Rhum Ct Sta 4+78
Invert Elev Dn (ft)
= 249.00
Calculations
Pipe Length (ft)
= 52.00
Qmin (cfs)
= 0.00
Slope (%)
= 0.50
Qmax (cfs)
= 10.96
Invert Elev Up (ft)
= 249.26
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 24.0
Shape
= Circular
Highlighted
Span (in)
= 24.0
Qtotal (cfs)
= 10.96
No. Barrels
= 1
Qpipe (cfs)
= 10.96
n-Value
= 0.013
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 4.08
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
= 5.65
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
= 250.59
HGL Up (ft)
= 250.45
Embankment
Hw Elev (ft)
= 250.99
Top Elevation (ft)
= 252.80
Hw/D (ft)
= 0.87
Top Width (ft)
= 20.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 10.00
Elegy (ft)
253.OD
252.C_`
251.-
250.OD
249.00
248.30
u 5 'lu 75
Circular Culvert
Single 24 inch RCP Culvert - Rhum Ct Sta 4+78
20 25 30 35 40 45 50 55 60 65 70
- HGL Embank
Hw Depth (ft)
3.74
2.74
1.74
0.74
-0.26
-1.26
75
Reach (ft)

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3130 by Autodesk, Inc.
Thursday, Nov 10 2022
Single 24 inch RCP
Culvert - Rhum Ct Sta 8+67
Invert Elev Dn (ft)
= 252.75
Calculations
Pipe Length (ft)
= 48.00
Qmin (cfs)
= 0.00
Slope (%)
= 0.50
Qmax (cfs)
= 11.89
Invert Elev Up (ft)
= 252.99
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 24.0
Shape
= Circular
Highlighted
Span (in)
= 24.0
Qtotal (cfs)
= 11.89
No. Barrels
= 1
Qpipe (cfs)
= 11.89
n-Value
= 0.013
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 4.37
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
= 5.83
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
= 254.37
HGL Up (ft)
= 254.23
Embankment
Hw Elev (ft)
= 254.81
Top Elevation (ft)
= 255.65
Hw/D (ft)
= 0.91
Top Width (ft)
= 20.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 10.00
Elev (ft)
25E CO
255.0
254.L1+
253.00
252.00
251.00
u
Single 24 inch RCP Culvert - Rhum Ct Sta 8+67
b 10 15 20 25 30 35 40 45 50 55 50 65
GircularGulvert HGL Embank
Hw Depth (ft)
3.01
2.01
1 01
0.01
-0.99
-1.99
70
Reach (ft)

Culvert Report
Hydraflow Express Extension forAutodesk® Civil 3138 by Autodesk, Inc.
Thursday, Nov 10 2022
Single 18 inch RCP
Culvert - Rhum Ct Sta 18+52
Invert Elev Dn (ft)
= 253.50
Calculations
Pipe Length (ft)
= 48.00
Qmin (cfs)
= 0.00
Slope (%)
= 0.50
Qmax (cfs)
= 2.89
Invert Elev Up (ft)
= 253.74
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 18.0
Shape
= Circular
Highlighted
Span (in)
= 18.0
Qtotal (cfs)
= 2.89
No. Barrels
= 1
Qpipe (cfs)
= 2.89
n-Value
= 0.013
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 2.14
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
= 3.98
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
= 254.57
HGL Up (ft)
= 254.39
Embankment
Hw Elev (ft)
= 254.64
Top Elevation (ft)
= 256.45
Hw/D (ft)
= 0.60
Top Width (ft)
= 20.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 10.00
Elev (ft)
257.OD T
256.0D
255.OD
254.CO
253.OD
252.OD
V
Single 18 inch RCP Culvert - Rhum Ct 5ta 18+52
5 10 15 20 25 30 35 40 45 50 55 60 65
Circular Culvert HGL Embank
Hw Depth (ft)
326
2.26
1.26
0.26
-0.74
-1.74
70
Reach (ft)

Culvert Report
Hydraflow Express Extension for Autodesk® Civil MOD by Autodesk, Inc.
Thursday, Nov 10 2022
Single 18 inch RCP
Culvert - Rhum Ct Sta 21+55 to 22+30 R side ditch
Invert Elev Dn (ft)
= 243.00
Calculations
Pipe Length (ft)
= 75.00
Qmin (cfs) =
0.00
Slope (%)
= 1.33
Qmax (cfs) =
1.27
Invert Elev Up (ft)
= 244.00
Tailwater Elev (ft) =
(dc+D)/2
Rise (in)
= 18.0
Shape
= Circular
Highlighted
Span (in)
= 18.0
Qtotal (cfs) =
1.27
No. Barrels
= 1
Qpipe (cfs) =
1.27
n-Value
= 0.013
Qovertop (cfs) =
0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s) =
1.06
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s) =
3.12
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft) =
243.96
HGL Up (ft) =
244.42
Embankment
Hw Elev (ft) =
244.57
Top Elevation (ft)
= 246.00
Hw/D (ft) =
0.38
Top Width (ft)
= 65.00
Flow Regime =
Inlet Control
Crest Width (ft)
= 10.00
Elev (ft)
24.
246.00
245 00
244.00
24300
242.00
v
Single 16 inch RCP Culvert - Rhum Ct Sta 21+55 to 22+30 R side ditch
Hw Depth (ft)
a.-1.-
2.00
1.00
0.00
-1.00
-2.00
a IV is zu 25 M Jb 40 45 50 55 60 65 70 75 50 85 90 85
Circular Culvert HGL Embank
Reach (ft)

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Thursday, Nov 10 2022
Dual 30 inch RCP
Culverts - Rhum Ct Sta 22+83
Invert Elev Dn (ft)
= 241.00
Calculations
Pipe Length (ft)
= 40.00
Qmin (cfs)
= 0.00
Slope (%)
= 0.50
Qmax (cfs)
= 16.45
Invert Elev Up (ft)
= 241.20
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 30.0
Shape
= Circular
Highlighted
Span (in)
= 30.0
Qtotal (cfs)
= 16.45
No. Barrels
= 2
Qpipe (cfs)
= 16.45
n-Value
= 0.013
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 2.27
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
= 4.78
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
= 242.73
HGL Up (ft)
= 242.15
Embankment
Hw Elev (ft)
= 242.52
Top Elevation (ft)
= 244.75
Hw/D (ft)
= 0.53
Top Width (ft)
= 20.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 10.00
Elev (ft)
245.00
244.0D
243.00
242.3L
241.00
240.DC
1.
Dual 30 inch RCP Culverts - Rhum Ct Sin 22+83
Diu 15 20 25 30 35 40 45 50 55
Z�ircularGulvert - HGL - Embank
Hw Depth (ft)
3.00
2.80
1.80
0.80
-0.20
-1.20
60
Reach (ft)

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Thursday, Nov 10 2022
Dual 24 inch RCP
Culverts - Rhum Ct Sta 37+40
Invert Elev Dn (ft)
= 234.30
Calculations
Pipe Length (ft)
= 40.00
Qmin (cfs)
= 0.00
Slope (%)
= 0.50
Qmax (cfs)
= 10.32
Invert Elev Up (ft)
= 234.50
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 24.0
Shape
= Circular
Highlighted
Span (in)
= 24.0
Qtotal (cfs)
= 10.32
No. Barrels
= 2
Qpipe (cfs)
= 10.32
n-Value
= 0.013
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 2.20
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
= 4.40
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
= 235.70
HGL Up (ft)
= 235.30
Embankment
Hw Elev (ft)
= 235.61
Top Elevation (ft)
= 237.80
Hw/D (ft)
= 0.55
Top Width (ft)
= 20.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 10.00
Elev (ft)
238.00
237.00
235.QD
235.0D
234.00
233.00
V
Dual 24 inch RCP Culverts - Rhum Ct 5ta 37+40
n 10 15 20 25 30 35 40 45 50 55
Circular Culvert HGL Embank
Hw Depth (ftl
3.50
2.50
1 E0
0.50
-0.50
-1.5c
50
Reach (ft)

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3130 by Autodesk, Inc. Thursday, Nov 10 2022
Single 18 inch RCP Culvert - Rhum Ct Sta 46+58
Invert Elev Dn (ft)
= 242.10
Calculations
Pipe Length (ft)
= 40.00
Qmin (cfs)
= 0.00
Slope (%)
= 0.50
Qmax (cfs)
= 0.93
Invert Elev Up (ft)
= 242.30
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 18.0
Shape
= Circular
Highlighted
Span (in)
= 18.0
Qtotal (cfs)
= 0.93
No. Barrels
= 1
Qpipe (cfs)
= 0.93
n-Value
= 0.013
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 0.81
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
= 2.86
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
= 243.03
HGL Up (ft)
= 242.66
Embankment
Hw Elev (ft)
= 242.78
Top Elevation (ft)
= 244.90
Hw/D (ft)
= 0.32
Top Width (ft)
= 20.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 10.00
Elev (ft)
245.00
244.50 -
244.C. -
243.5C -
243.0C -
242.50
242.0C
241.5C
GircularGulver[
Single 18 inch RCP Culvert - Rhum Ct Sta 46+58
15 2C 25 3C
HGL - Embank
Hw Depth (ft)
2.70
2.20
1.70
1.20
0.70
0.20
-0.30
35 40 45 50 55 61)
Reach (ft)

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
Thursday, Nov 10 2022
Single 24 inch RCP
Culvert - Rhum Ct Sta 48+96
Invert Elev Dn (ft)
= 235.05
Calculations
Pipe Length (ft)
= 40.00
Qmin (cfs)
= 0.00
Slope (%)
= 0.50
Qmax (cfs)
= 11.57
Invert Elev Up (ft)
= 235.25
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 24.0
Shape
= Circular
Highlighted
Span (in)
= 24.0
Qtotal (cfs)
= 11.57
No. Barrels
= 1
Qpipe (cfs)
= 11.57
n-Value
= 0.013
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 4.27
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
= 5.76
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
= 236.66
HGL Up (ft)
= 236.47
Embankment
Hw Elev (ft)
= 237.04
Top Elevation (ft)
= 238.50
Hw/D (ft)
= 0.90
Top Width (ft)
= 20.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 10.00
Elev (ft)
23S.0D
236.0`-
23'_0C
236.0D
235.00
234.00
Single 24 inch RCP Culvert - Rhum Ct St$ 48+96
I' 1n zu 25 30 35 40 45 50 55
CircularCulvert HGL Embank
Hw Depth (ft)
- 3.75
- 2.75
1.75
0.75
-..25
-1.25
60
Reach (ft)

Culvert Report
Hydraflow Express Extension for Autodesk® Civil 3138 by Autodesk, Inc.
Single 18 inch RCP
Culvert - Rhum Ct Sta 53+82.5
Invert Elev Dn (ft)
= 242.66
Calculations
Pipe Length (ft)
= 40.00
Qmin (cfs)
Slope (%)
= 0.50
Qmax (cfs)
Invert Elev Up (ft)
= 242.86
Tailwater Elev (ft)
Rise (in)
= 18.0
Shape
= Circular
Highlighted
Span (in)
= 18.0
Qtotal (cfs)
No. Barrels
= 1
Qpipe (cfs)
n-Value
= 0.013
Qovertop (cfs)
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
HGL Up (ft)
Embankment
Hw Elev (ft)
Top Elevation (ft)
= 245.20
Hw/D (ft)
Top Width (ft)
= 20.00
Flow Regime
Crest Width (ft)
= 10.00
Elev (ft)
246.00
245.DO
244.00
243.OD
242.00
241.00
Single 18 inch RCP Culvert - Rhum Ct 5ta 53+82.5
iv -ia eu 2b 30 35 40 45 5o 55
Circular Culvert HGL Embank
Thursday, Nov 10 2022
= 0.00
= 2.13
= (dc+D)/2
= 2.13
= 2.13
= 0.00
= 1.66
= 3.62
= 243.69
= 243.41
= 243.62
= 0.50
= Inlet Control
HwDepth ftf
314
2.14
1 14
: 14
-0.06
-1.86
60
Reach (ft)

Rip Rap Apron Sizing for Various
Outlets' & Culverts'

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Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
OUTLET SWALE #1
RIPRAP APRON
Trapezoidal
Bottom Width (ft)
= 30.00
Side Slopes (z:1)
= 3.00, 3.00
Total Depth (ft)
= 1.00
Invert Elev (ft)
= 230.00
Slope (%)
= 0.50
N-Value
= 0.070
Calculations
Compute by:
Known Q
Known Q (cfs)
= 19.24
Elev (ft)
232.00
231.50
231.00
230.50
230.00
229.50
0
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
5 10 15 20 25 30 35 40
Reach (ft)
Monday, Nov 14 2022
= 0.60
= 19.24
= 19.08
= 1.01
= 33.79
= 0.24
= 33.60
= 0.62
Depth (ft)
2.00
1.50
1.00
0.50
we
-0.50
45 50

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3130D by Autodesk, Inc.
OUTLET SWALE
#2 RIPRAP APRON
Trapezoidal
Bottom Width (ft)
= 30.00
Side Slopes (z:1)
= 3.00, 3.00
Total Depth (ft)
= 1.00
Invert Elev (ft)
= 235.00
Slope (%)
= 0.50
N-Value
= 0.070
Calculations
Compute by:
Known Q
Known Q (cfs)
= 17.48
Elev (ft)
237.00
236.50
236.00
235.50
235.00
234.50
0
5
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
Monday, Nov 14 2022
= 0.57
= 17.48
= 18.07
= 0.97
= 33.61
= 0.22
= 33.42
= 0.58
Depth (ft)
2.00
1.50
1.00
0.50
0.00
-0.50
10 15 20 25 30 35 40 45 50
Reach (ft)

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
OUTLET SWALE
#3 RIPRAP APRON
Trapezoidal
Bottom Width (ft)
= 30.00
Side Slopes (z:1)
= 3.00, 3.00
Total Depth (ft)
= 1.00
Invert Elev (ft)
= 245.00
Slope (%)
= 0.50
N-Value
= 0.070
Calculations
Compute by:
Known Q
Known Q (cfs)
= 4.77
Elev (ft)
247.00
246.50
246.00
245.50
245.00
244.50
0
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
5 10 15 20 25 30 35
Reach (ft)
Monday, Nov 14 2022
= 0.26
= 4.770
= 8.00
= 0.60
= 31.64
= 0.10
= 31.56
= 0.27
40 45
Depth (ft)
2.00
1.50
1.00
0.50
e ��
—0.50
50

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
OUTLET SWALE
#4 RIPRAP APRON
Trapezoidal
Bottom Width (ft)
= 30.00
Side Slopes (z:1)
= 3.00, 3.00
Total Depth (ft)
_ 1.00
Invert Elev (ft)
= 234.00
Slope (%)
= 0.50
N-Value
= 0.070
Calculations
Compute by:
Known Q
Known Q (cfs)
= 20.06
Elev (ft)
236.00
235.50
235.00
234.50
234.00
233.50
0
A
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (fVs)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
Monday, Nov 14 2022
= 0.61
= 20.06
= 19.42
= 1.03
= 33.86
= 0.24
= 33.66
= 0.63
Depth (ft)
2.00
1.50
1.00
0.50
elm
-0.50
10 15 20 25 30 35 40 45 50
Reach (ft)

Channel Report
Hydratlow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.
OUTLET SWALE
#5 RIPRAP APRON
Trapezoidal
Bottom Width (ft)
= 30.00
Side Slopes (z:1)
= 3.00, 3.00
Total Depth (ft)
= 1.00
Invert Elev (ft)
= 225.00
Slope (%)
= 0.50
N-Value
= 0.070
Calculations
Compute by:
Known Q
Known Q (cfs)
= 9.98
Elev (ft)
227.00
226.50
226.00
225.50
225.00
224.50
0
5
Section
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EG L (ft)
Monday, Nov 14 2022
= 0.41
= 9.980
= 12.80
= 0.78
= 32.59
= 0.16
= 32.46
= 0.42
Depth (ft)
2.00
1.50
1.00
0.50
1 1 1;
-0.50
10 15 20 25 30 35 40 45 50
Reach (ft)

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3138 by Autodesk, Inc.
OUTLET SWALE
#6 RIPRAP APRON
Trapezoidal
Bottom Width (ft)
= 30.00
Side Slopes (z:1)
= 3.00, 3.00
Total Depth (ft)
= 1.00
Invert Elev (ft)
= 224.50
Slope (%)
= 0.50
N-Value
= 0.070
Calculations
Compute by:
Known Q
Known Q (cfs)
= 21.06
Elev (ft)
226.00
225.50
225.00
224.50
224.00
0
Section
5 10 15 20 25
Reach (ft)
Highlighted
Depth (ft)
Q (cfs)
Area (sgft)
Velocity (fVs)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
Monday, Nov 14 2022
= 0.63
= 21.06
= 20.09
= 1.05
= 33.98
= 0.25
= 33.78
= 0.65
30 35 40 45
Depth (ft)
1.50
1.00
0.50
MX

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3130 by Autodesk, Inc.
OUTLET SWALE
#8 RIPRAP APRON
Trapezoidal
Bottom Width (ft)
= 30.00
Side Slopes (z:1)
= 3.00, 3.00
Total Depth (ft)
= 1.00
Invert Elev (ft)
= 226.00
Slope (%)
= 0.50
N-Value
= 0.070
Calculations
Compute by:
Known Q
Known Q (cfs)
= 27.62
Elev (ft)
22s.00
227.50
227.00
226.50
226.00
225.50
0
5 10 15 20
Section
25
Reach (ft)
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
30 35 40
Monday, Nov 14 2022
= 0.74
= 27.62
= 23.84
= 1.16
= 34.68
= 0.30
= 34.44
= 0.76
45
Depth (ft)
2.00
1.50
1.00
0.50
MX

Soils Report for Site

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Soil Map —Cumberland County, North Carolina
Map Unit Legend
Map Unit Symbol
Map Unit Name
BaB
Blaney loamy sand, 2 to 8
percent slopes
BaD
Blaney loamy sand, 8 to 15
percent slopes
CaB
Candor sand, 1 to 8 percent
slopes
GdB
Gilead loamy sand, 2 to 8
percent slopes
JT
Johnston loam
Ud
Udorthents, loamy
VaB
Vaucluse loamy sand, 2 to 8
percent slopes
WaB
Wagram loamy sand, 0 to 6
percent slopes
Totals for Area of Interest
Kingsbury Ridge
Acres in AOI
12.2
Percent of AOI
7.4%
24.1 %
49.8%
39.5
81.5
1.7
1.0%
1.5
0.5
0.9%
0.3%
17.3
10.6%
9.6
5.8%
163.8
100.0%
u Natural Resources Web Soil Survey 11/9/2021
Conservation Service National Cooperative Soil Survey Page 3 of 3