SW4210601_Supplement-EZ Form_20230303

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1
Project Name
Wynnfall Subdivision
2
Project Area ac
29,2
3
Coastal Wetland Area ac
0
4
Surface Water Area ac
0
5
Is this pr9ject High or Low Density?
Low
6
1 Does this project use an off -site SCM?
No
COMPLIANCE WITH 02H .1003(4)
7
Width of ve elated setbacks provided feet
N/A
8
Will the vegetated setback remain vegetated?
NIA
9
If BUA is proposed in the setback, does it meet NCAC 02H.1003 4 c d ?
No
10
Is streambank stabilization proposed on this project?
No
NUMBER AND TYPE OF SCMs:
11
Infiltration System
12
Bioretention Cell
13
Wet Pond
14
Stormwater Wetland
15
Permeable Pavement
16
Sand Filter
17
Rainwater Harvesting RWH
18
Green Roof
19
Level Spreader -Filter Stri LS-FS
20
Disconnected Impervious Surface DIS
21
Treatment Swale
22
Dry Pond
23
Storm Filter
24
Silva Cell
25
Ba filter
26
Filterra
FORMS LOADED
DESIGNER CERTIFICATION
27
Name and Title:
Timothy S. Kennerl
28
Or anizatiom
Kennerly Engineering & Design, Inc.
29
Street address:
12133 N- NC HWY 150, Ste- F
30
City. State, Zip:
Winston-Salem, NC 27127
31
Phone numbers):
336 775-2118
32
Email:
[e-mail]
Certification Statement:
I certify, under penalty of law that this Supplement-EZ form and all supporting information were prepared under my direction or supervision; that the
information provided in the form is, to the best of my knowledge and belief, true, accurate, and complete; and that the engineering plans,
specifications, operation and maintenance agreements and other supporting information are consistent with the information provided here.
Designer
CA
_ SEAL
29317
G I NEB • ��v�:
T
Signature of Designer
3
Date

DRAINAGE AREAS
1
Is this a hi h density ro'ect?
No
2
If so, number of drainage areas/SCMs
0
3
Does this Droiect have low de—ity areas?
Yes
4
If so, number of low density drainage areas
1
5
Is all/part of this project subject to previous rule
versions?
No
FORMS LOADED
DRAINAGE
AREA INFORMATION
Site
LD 1
4
Type of SCM
5
Total drainage area (sq ft
1,271,952
1,271,952
6
Onsite drainage area (sq ft
1,271,952
1,271,952
7
Offsite drainage area (sq ft
0
0
8
Total BUA in promect (sq ft
305229 sf
305229 sf
9permitting)
New BUA on subdivided lots (subject to
s ft
233355 sf
233355 sf
10permitting)
New BUA not on subdivided lots (subject to
s
71874 sf
71874 sf
11
Offsite BUA (sq ft
sf
12
Breakdown of new BUA not on subdivided lots:
Parking (sq ft
Sidewalk (sq ft
Roof (sq ft
Roadway s ft
71874 sf
71874 sf
Future (sq ft
Other, please specify in the comment box
below (sq ft
13
New infiltrating permeable pavement on
subdivided lots (sq ft
14
New infiltrating permeable pavement not on
subdivided lots (sq ft
15permitting)
Existing BUA that will remain (not subject to
s ft
16
Existing BUA that is already permitted (sq ft
17
Existing BUA that will be removed (sq ft
18
Percent BUA
24%
24%
19
Design storm inches
20
Design volume of SCM cu ft
21
Calculation method for design volume
ADDITIONAL INFORMATION
22
Please use this space to provide any additional information about the
drainage area(s):

LOW DENSITY
DESIGN
REQUIREMENTS FOR LOW DENSITY PROJECTS FROM 02H .1003
1
Is project below density thresholds set forth in the applicable stormwater rule?
Yes
2
Does project maximize dispersed flow and minimize channelization of flow?
Yes
3
Has the use of piping been minimized per.1003(2)(c)?
Yes
4
Side slopes of the vegetated conveyances (H:V)
4:1, 3:1
5
Maximum velocity in the vegetated conveyances during the 10-year storm?
4.84
6
Are curb outlet swales proposed?
No
7
Maximum longitudinal slope of curb outlet swale(s) (%)
N/A
8
Bottom width of curb outlet swale(s) (feet)
N/A
9
Maximum side slope of curb outlet swale(s) (H:V)
N/A
10
Minimum length of curb outlet swale(s) (feet)
N/A
11
Are treatment swales used instead of curb outlet swales?
No
12
Is stormwater released at the edge of the setback as dispersed flow?
Yes
13
Have stormwater outlets been designed to prevent downslope erosion?
Yes
14
JAre variations to rule .1003 proposed?
No
ADDITIONAL INFORMATION
15 1 Please use this space to provide any additional information about this low density project:
This Pro'ect will consist of grassed roadside ditches with drivewav culverts and culverts under the roads for conve ance
Swale
#
Drainage
Area
ac
BUA
(ac)
Pervious
area
ac
C
Q
(cfs)
Slope
M
V.11-
(fps)
V_1
(fps)
Flow depth
(ft)
1
0.60
0.18
0.42
0.55
2.27
3.10
4.00
2.94
0.47
2
0.22
0.05
0.17
0.51
0.78
5.80
4.00
2.85
0.28
3
0.68
0.11
0.57
0.48
2.35
2.70
4.00
2.82
0.49
4
0.15
0.04
0.11
0.53
0.55
3.10
4.00
2.06
0.28
5
3.77
0.54
3.23
0.47
11.49
2.10
4.00
3.81
0.93
6
0.30
0.08
0.22
0.53
1.10
4.90
4.00
2.91
0.33
7
1.87
0.23
1.64
0.46
6.03
1.60
4.00
2.93
0.77
8
0.23
0.06
0.17
0.53
0.84
5.20
4.00
2.78
0.29
9
0.90
0.12
0.78
0.47
2.95
4.40
4.00
3.58
0.49
10
0.77
0.12
0.65
0.48
2.60
4.40
4.00
3.48
0.46
11
0.69
0.05
0.64
0.44
2.07
1.10
4.00
1.95
0.55
12
0.54
0.14
0.40
0.53
2.00
4.70
4.00
3.33
0.41
13
0.90
0.13
0.77
0.47
2.92
4.80
4.00
3.69
0.48
14
0.31
0.09
0.22
0.55
1.13
4.70
4.00
2.89
0.33
15
1.89
0.54
1.35
0.54
6.43
4.20
4.00
4.00
0.66
16
0.23
0.06
0.17
0.53
0.84
1.90
4.00
1.91
0.36
17
0.52
0.13
0.39
0.53
1.81
1.30
4.00
2.00
0.51
18
0.24
0.06
0.18
0.53
0.87
1.60
4.00
1.80
0.37
19
1.78
0.52
1.26
0.55
5.92
3.50
4.00
3.91
0.66
20
1 0.30
0.10
0.20
0.57
1.13
3.70
4.00
1 2.64
0.35
21
7.40
1.31
6.09
0.49
24.84
3.00
5.50
4.93
0.73
22
13.83
2.40
11.43
0.49
46.42
3.40
5.50
4.62
0.87
23
24
25
26
27
28
29
30

Hydraulic Analysis Report
Project Title: 20-050 Wynnfall Subdivision
Designer: Timothy S. Kennerly, PE
Project Date: Tuesday, March 23, 2021
Project Units: U.S. Customary Units

Channel Analysis: Ditch No. 1
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 4.0000 ft/ft
Side Slope 2 (Z2): 3.0000 ft/ft
Longitudinal Slope: 0.0310 ft/ft
Manning's n: 0.0330
Flow 2.2700 cfs
Result Parafrieters
Depth 0.4698 ft
Area of Flow 0.7724 ft^2
Wetted Perimeter 3.4225 ft
Hydraulic Radius 0.2257 ft
Average Velocity 2.9389 ft/s
Top Width 3.2884 ft
Froude Number: 1.0686
Critical Depth 0.4844 ft
Critical Velocity 2.7640 ft/s
Critical Slope: 0.0263 ft/ft
Critical Top Width 3.46 ft
Calculated Max Shear Stress 0.9087 lb/ft^2
Calculated Avg Shear Stress 0.4366 lb/ft^2

Channel Analysis: Ditch No. 2
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0580 ft/ft
Manning's n: 0.0330
Flow 0.7800 cfs
Result Paralrieters
Depth 0.2798 ft
Area of Flow 0.2741 ft^2
Wetted Perimeter 2.0387 ft
Hydraulic Radius 0.1344 ft
Average Velocity 2.8460 ft/s
Top Width 1.9588 ft
Froude Number: 1.3408
Critical Depth 0.3160 ft
Critical Velocity 2.2323 ft/s
Critical Slope: 0.0304 ft/ft
Critical Top Width 2.26 ft
Calculated Max Shear Stress 1.0128 lb/ft^2
Calculated Avg Shear Stress 0.4865 lb/ft^2

Channel Analysis: Ditch No. 3
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0270 ft/ft
Manning's n: 0.0330
Flow 2.3500 cfs
Result Parafrieters
Depth 0.4884 ft
Area of Flow 0.8349 ft^2
Wetted Perimeter 3.5582 ft
Hydraulic Radius 0.2346 ft
Average Velocity 2.8148 ft/s
Top Width 3.4188 ft
Froude Number: 1.0038
Critical Depth 0.4912 ft
Critical Velocity 2.7832 ft/s
Critical Slope: 0.0262 ft/ft
Critical Top Width 3.51 ft
Calculated Max Shear Stress 0.8229 lb/ft^2
Calculated Avg Shear Stress 0.3953 lb/ft^2

Channel Analysis: Ditch No. 4
input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0310 ft/ft
Manning's n: 0.0330
Flow 0.5500 cfs
Result Parameters
Depth 0.2761 ft
Area of Flow 0.2667 ft^2
Wetted Perimeter 2.0112 ft
Hydraulic Radius 0.1326 ft
Average Velocity 2.0619 ft/s
Top Width 1.9325 ft
Froude Number: 0.9780
Critical Depth 0.2748 ft
Critical Velocity 2.0816 ft/s
Critical Slope: 0.0318 ft/ft
Critical Top Width 1.96 ft
Calculated Max Shear Stress 0.5340 lb/ft^2
Calculated Avg Shear Stress 0.2566 lb/ft^2

Channel Analysis: Ditch No. 5
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0210 ft/ft
Manning's n: 0.0330
Flow 11.4900 cfs
Result Parameters
Depth 0.9283 ft
Area of Flow 3.0164 ft12
Wetted Perimeter 6.7634 ft
Hydraulic Radius 0.4460 ft
Average Velocity 3.8092 ft/s
Top Width 6.4984 ft
Froude Number: 0.9853
Critical Depth 0.9267 ft
Critical Velocity 3.8230 ft/s
Critical Slope: 0.0212 ft/ft
Critical Top Width 6.62 ft
Calculated Max Shear Stress 1.2165 lb/ft^2
Calculated Avg Shear Stress 0.5844 lb/ft^2

Channel Analysis: Ditch No. 6
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0490 ft/ft
Manning's n: 0.0330
Flow 1.1000 cfs
Result Paralrieters
Depth 0.3286 ft
Area of Flow 0.3778 ft^2
Wetted Perimeter 2.3937 ft
Hydraulic Radius 0.1578 ft
Average Velocity 2.9113 ft/s
Top Width 2.2999 ft
Froude Number: 1.2658
Critical Depth 0.3625 ft
Critical Velocity 2.3912 ft/s
Critical Slope: 0.0290 ft/ft
Critical Top Width 2.59 ft
Calculated Max Shear Stress 1.0046 lb/ft^2
Calculated Avg Shear Stress 0.4826 lb/ft^2

Channel Analysis: Ditch No. 7
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0160 ft/ft
Manning's n: 0.0330
Flow 6.0300 cfs
.esult Paralrieters
Depth 0.7671 ft
Area of Flow 2.0596 ft^2
Wetted Perimeter 5.5886 ft
Hydraulic Radius 0.3685 ft
Average Velocity 2.9278 ft/s
Top Width 5.3697 ft
Fronde Number: 0.8331
Critical Depth 0.7160 ft
Critical Velocity 3.3605 ft/s
Critical Slope: 0.0231 ft/ft
Critical Top Width 5.12 ft
Calculated Max Shear Stress 0.7659 lb/ft^2
Calculated Avg Shear Stress 0.3679 lb/ft^2

Channel Analysis: Ditch No. 8
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0520 ft/ft
Manning's n: 0.0330
Flow 0.8400 cfs
Result Parameters
Depth 0.2937 ft
Area of Flow 0.3018 ft^2
Wetted Perimeter 2.1395 ft
Hydraulic Radius 0.1411 ft
Average Velocity 2.7829 ft/s
Top Width 2.0557 ft
Froude Number: 1.2798
Critical Depth 0.3255 ft
Critical Velocity 2.2656 ft/s
Critical Slope: 0.0301 ft/ft
Critical Top Width 2.33 ft
Calculated Max Shear Stress 0.9529 lb/ft^2
Calculated Avg Shear Stress 0.4578 lb/ft^2

Channel Analysis: Ditch No. 9
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0440 ft/ft
Manning's n: 0.0330
Flow 2.9500 cfs
Result Paralrieters
Depth 0.4853 ft
Area of Flow 0.8244 ft^2
Wetted Perimeter 3.5359 ft
Hydraulic Radius 0.2332 ft
Average Velocity 3.5782 ft/s
Top Width 3.3973 ft
Froude Number: 1.2801
Critical Depth 0.5379 ft
Critical Velocity 2.9127 ft/s
Critical Slope: 0.0254 ft/ft
Critical Top Width 3.84 ft
Calculated Max Shear Stress 1.3325 lb/ft^2
Calculated Avg Shear Stress 0.6402 lb/ft^2

Channel Analysis: Ditch No. 10
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0440 ft/ft
Manning's n: 0.0330
Flow 2.6000 cfs
Result Paralrieters
Depth 0.4629 ft
Area of Flow 0.7499 ft^2
Wetted Perimeter 3.3723 ft
Hydraulic Radius 0.2224 ft
Average Velocity 3.4670 ft/s
Top Width 3.2402 ft
Froude Number: 1.2700
Critical Depth 0.5114 ft
Critical Velocity 2.8401 ft/s
Critical Slope: 0.0258 ft/ft
Critical Top Width 3.65 ft
Calculated Max Shear Stress 1.2709 lb/ft^2
Calculated Avg Shear Stress 0.6106 lb/ft^2

Channel Analysis: Ditch No. 11
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0110 ft/ft
Manning's n: 0.0330
Flow 2.0700 cfs
.esult Paralrieters
Depth 0.5511 ft
Area of Flow 1.0630 ft^2
Wetted Perimeter 4.0150 ft
Hydraulic Radius 0.2648 ft
Average Velocity 1.9473 ft/s
Top Width 3.8577 ft
Froude Number: 0.6537
Critical Depth 0.4669 ft
Critical Velocity 2.7135 ft/s
Critical Slope: 0.0266 ft/ft
Critical Top Width 3.34 ft
Calculated Max Shear Stress 0.3783 lb/ft^2
Calculated Avg Shear Stress 0.1817 lb/ft^2

Channel Analysis: Ditch No. 12
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0470 ft/ft
Manning's n: 0.0330
Flow 2.0000 cfs
Result Paralrieters
Depth 0.4144 ft
Area of Flow 0.6009 ft^2
Wetted Perimeter 3.0187 ft
Hydraulic Radius 0.1991 ft
Average Velocity 3.3282 ft/s
Top Width 2.9005 ft
Froude Number: 1.2886
Critical Depth 0.4605 ft
Critical Velocity 2.6949 ft/s
Critical Slope: 0.0268 ft/ft
Critical Top Width 3.29 ft
Calculated Max Shear Stress 1.2152 lb/ft^2
Calculated Avg Shear Stress 0.5838 lb/ft^2

Channel Analysis: Ditch No. 13
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0480 ft/ft
Manning's n: 0.0330
Flow 2.9200 cfs
Result Parafrieters
Depth 0.4757 ft
Area of Flow 0.7919 ft12
Wetted Perimeter 3.4653 ft
Hydraulic Radius 0.2285 ft
Average Velocity 3.6875 ft/s
Top Width 3.3296 ft
Froude Number: 1.3325
Critical Depth 0.5357 ft
Critical Velocity 2.9068 ft/s
Critical Slope: 0.0255 ft/ft
Critical Top Width 3.83 ft
Calculated Max Shear Stress 1.4247 lb/ft^2
Calculated Avg Shear Stress 0.6844 lb/ft^2

Channel Analysis: Ditch No. 14
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0470 ft/ft
Manning's n: 0.0330
Flow 1.1300 cfs
Result Parameters
Depth 0.3345 ft
Area of Flow 0.3916 ft^2
Wetted Perimeter 2.4369 ft
Hydraulic Radius 0.1607 ft
Average Velocity 2.8855 ft/s
Top Width 2.3415 ft
Fronde Number: 1.2434
Critical Depth 0.3665 ft
Critical Velocity 2.4041 ft/s
Critical Slope: 0.0289 ft/ft
Critical Top Width 2.62 ft
Calculated Max Shear Stress 0.9810 lb/ft^2
Calculated Avg Shear Stress 0.4713 lb/ft^2

Channel Analysis: Ditch No. 15
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0420 ft/ft
Manning's n: 0.0330
Flow 6.4300 cfs
Result Parameters
Depth 0.6557 ft
Area of Flow 1.5049 ft^2
Wetted Perimeter 4.7773 ft
Hydraulic Radius 0.3150 ft
Average Velocity 4.2726 ft/s
Top Width 4.5901 ft
Froude Number: 1.3150
Critical Depth 0.7347 ft
Critical Velocity 3.4039 ft/s
Critical Slope: 0.0229 ft/ft
Critical Top Width 5.25 ft
Calculated Max Shear Stress 1.7185 lb/ft^2
Calculated Avg Shear Stress 0.8256 lb/ft^2

Channel Analysis: Ditch No. 16
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0190 ft/ft
Manning's n: 0.0330
Flow 0.8400 cfs
Result Parameters
Depth 0.3547 ft
Area of Flow 0.4403 ft^2
Wetted Perimeter 2.5840 ft
Hydraulic Radius 0.1704 ft
Average Velocity 1.9078 ft/s
Top Width 2.4828 ft
Fronde Number: 0.7983
Critical Depth 0.3255 ft
Critical Velocity 2.2656 ft/s
Critical Slope: 0.0301 ft/ft
Critical Top Width 2.33 ft
Calculated Max Shear Stress 0.4205 lb/ft^2
Calculated Avg Shear Stress 0.2020 lb/ft^2

Channel Analysis: Ditch No. 17
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0130 ft/ft
Manning's n: 0.0330
Flow 1.8100 cfs
Result Parameters
Depth 0.5079 ft
Area of Flow 0.9028 ft^2
Wetted Perimeter 3.7002 ft
Hydraulic Radius 0.2440 ft
Average Velocity 2.0048 ft/s
Top Width 3.5552 ft
Fronde Number: 0.7011
Critical Depth 0.4425 ft
Critical Velocity 2.6416 ft/s
Critical Slope: 0.0271 ft/ft
Critical Top Width 3.16 ft
Calculated Max Shear Stress 0.4120 lb/ft^2
Calculated Avg Shear Stress 0.1979 lb/ft^2

Channel Analysis: Ditch No. 18
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0160 ft/ft
Manning's n: 0.0330
Flow 0.8700 cfs
Result Parameters
Depth 0.3712 ft
Area of Flow 0.4821 ft^2
Wetted Perimeter 2.7040 ft
Hydraulic Radius 0.1783 ft
Average Velocity 1.8044 ft/s
Top Width 2.5981 ft
Fronde Number: 0.7382
Critical Depth 0.3301 ft
Critical Velocity 2.2816 ft/s
Critical Slope: 0.0299 ft/ft
Critical Top Width 2.36 ft
Calculated Max Shear Stress 0.3706 lb/ft^2
Calculated Avg Shear Stress 0.1780 lb/ft^2

Channel Analysis: Ditch No. 19
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0350 ft/ft
Manning's n: 0.0330
Flow 5.9200 cfs
Result Parafrieters
Depth 0.6578 ft
Area of Flow 1.5146 ft12
Wetted Perimeter 4.7925 ft
Hydraulic Radius 0.3160 ft
Average Velocity 3.9086 ft/s
Top Width 4.6048 ft
Froude Number: 1.2010
Critical Depth 0.7108 ft
Critical Velocity 3.3481 ft/s
Critical Slope: 0.0232 ft/ft
Critical Top Width 5.08 ft
Calculated Max Shear Stress 1.4367 lb/ft^2
Calculated Avg Shear Stress 0.6902 lb/ft^2

Channel Analysis: Ditch No. 20
Input Parameters
Channel Type: Triangular
Side Slope 1 (Z1): 3.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Longitudinal Slope: 0.0370 ft/ft
Manning's n: 0.0330
Flow 1.1300 cfs
Result Parameters
Depth 0.3498 ft
Area of Flow 0.4284 ft^2
Wetted Perimeter 2.5487 ft
Hydraulic Radius 0.1681 ft
Average Velocity 2.6379 ft/s
Top Width 2.4489 ft
Froude Number: 1.1115
Critical Depth 0.3665 ft
Critical Velocity 2.4041 ft/s
Critical Slope: 0.0289 ft/ft
Critical Top Width 2.62 ft
Calculated Max Shear Stress 0.8077 lb/ft^2
Calculated Avg Shear Stress 0.3880 lb/ft^2

Channel Analysis: Ditch No. 21
Input Parameters
Channel Type: Trapezoidal
Side Slope 1 (Z1): 4.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Channel Width 4.00 ft
Longitudinal Slope: 0.0300 ft/ft
Manning's n: 0.0330
Flow 24.8400 cfs
Result Parameters
Depth 0.7283 ft
Area of Flow 5.0348 ft12
Wetted Perimeter 10.0057 ft
Hydraulic Radius 0.5032 ft
Average Velocity 4.9336 ft/s
Top Width 9.8263 ft
Froude Number: 1.2146
Critical Depth 0.8091 ft
Critical Velocity 4.2429 ft/s
Critical Slope: 0.0198 ft/ft
Critical Top Width 10.47 ft
Calculated Max Shear Stress 1.3634 lb/ft^2
Calculated Avg Shear Stress 0.9420 lb/ft^2

Channel Analysis: Ditch No. 22
Input Parameters
Channel Type: Trapezoidal
Side Slope 1 (Z1): 4.0000 ft/ft
Side Slope 2 (Z2): 4.0000 ft/ft
Channel Width 8.00 ft
Longitudinal Slope: 0.0340 ft/ft
Manning's n: 0.0450
Flow 46.4200 cfs
Result Parameters
Depth 0.8741 ft
Area of Flow 10.0487 ft^2
Wetted Perimeter 15.2078 ft
Hydraulic Radius 0.6608 ft
Average Velocity 4.6195 ft/s
Top Width 14.9926 ft
Froude Number: 0.9944
Critical Depth 0.8713 ft
Critical Velocity 4.6389 ft/s
Critical Slope: 0.0344 ft/ft
Critical Top Width 14.97 ft
Calculated Max Shear Stress 1.8544 lb/ft^2
Calculated Avg Shear Stress 1.4019 lb/ft^2