20221760 Ver 1_More Info Received_20230123

1/23/23, 11:11 AM ECMDS 7.0
NORTH
AMERICAN
GREEN
CHANNEL ANALYSIS
> > > Temporary Stream Bypass
Name Temporary Stream Bypass
Discharge 9.13
Channel Slope 0.0112
Channel Bottom Width 1
Left Side Slope 3
Right Side Slope 3
Low Flow Liner
Retardence Class C 6-12 in
Vegetation Type None
Vegetation Density None
Soil Type Sandy Loam (GM)
SC150
North American Green
5401 St. Wendel-Cynthiana Rd.
Poseyville, Indiana 47633
Tel. [phone]
>Fax [phone]
www.nagreen.com
ECMDS v7.0
Phase
Reach
Discharge
Velocity
Normal
Depth
Mannings N
Permissible
Shear Stress
Calculated
Shear Stress
Safety
Factor
Remarks
Staple
Pattern
SC150
Unvegetated
Underlying
Substrate
Straight
9.13 cfs
4.25 ft/s
0.7 ft
Straight 9.13 cfs 4.25 ft/s 0.7 ft
0.02
2 Ibs/ft2
0.49 lbs/ft2
4.12
STABLE
D
0.02 1.89 Ibs/ft2 0.28 Ibs/ft2 6.82 STABLE D
https://ecmds.com/project/154333/channel-analysis/234340/show 1/1

<4S>
Existing Stream Direct
Impervious
<Subca>
Reach
Exis ing Stream -
emainder
Existing Stream DA
Link
Routing Diagram for 21.00169 HydroCAD
Prepared by McGill Associates, Printed 1/23/2023
HydroCAD® 10.20-2b s/n 04263 © 2021 HydroCAD Software Solutions LLC

21.00169 HydroCAD NOAA 24-hr A 10-Year Rainfall=3.89"
Prepared by McGill Associates Printed 1/23/2023
HydroCAD® 10.20-2b s/n 04263 © 2021 HydroCAD Software Solutions LLC Page 2
Summary for Subcatchment 4S: Existing Stream - Direct Impervious
Runoff = 7.33 cfs @ 12.32 hrs, Volume=
Routed to Link 6L : Existing Stream DA
0.652 af, Depth> 3.52"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-20.00 hrs, dt= 0.01 hrs
NOAA 24-hr A 10-Year Rainfall=3.89"
Area (sf) CN Description
96,881 98 Paved parking, HSG B
96,881 100.00% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
12.5 150 0.0770 0.20 Sheet Flow, Sheet Flow
Grass: Dense n= 0.240 P2= 2.72"
4.0 1,082 0.0900 4.50 Shallow Concentrated Flow, Shallow Concentrated
Grassed Waterway Kv= 15.0 fps
6.4 922 0.0130 2.39 4.07 Channel Flow, Channel Flow
Area= 1.7 sf Perim= 4.0' r= 0.42'
n= 0.040 Mountain streams
22.9 2,154 Total

21.00169 HydroCAD
Prepared by McGill Associates
HydroCAD® 10.20-2b s/n 04263 © 2021 HydroCAD Software Solutions LLC
NOAA 24-hr A 10-Year Rainfall=3.89"
Printed 1/23/2023
Page 3
Summary for Subcatchment 5S: Existing Stream - Remainder
Runoff = 2.79 cfs @ 12.52 hrs, Volume=
Routed to Link 6L : Existing Stream DA
0.386 af, Depth> 0.33"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-20.00 hrs, dt= 0.01 hrs
NOAA 24-hr A 10-Year Rainfall=3.89"
Area (sf) CN Adj Description
36,948
34,383
93,914
96,026
359,845
98 Unconnected pavement, HSG B
61 >75% Grass cover, Good, HSG B
39 >75% Grass cover, Good, HSG A
32 Woods/grass comb., Good, HSG A
58 Woods/grass comb., Good, HSG B
621,116
584,168
36,948
36,948
54 52 Weighted Average, UI Adjusted
94.05% Pervious Area
5.95% Impervious Area
100.00% Unconnected
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
14.5 150 0.1470
4.6
0.5
0.3
6.0
535 0.1530
174 0.0920
60 0.4670
855 0.0130
0.17 Sheet Flow, Sheet Flow
Woods: Light underbrush n= 0.400
1.96 Shallow Concentrated Flow, Shallow Concentrated 1
Woodland Kv= 5.0 fps
6.16 Shallow Concentrated Flow, Shallow Concentrated 2
Paved Kv= 20.3 fps
3.42 Shallow Concentrated Flow, Shallow Concentrated 3
Woodland Kv= 5.0 fps
2.39 4.07 Channel Flow, Channel Flow
Area= 1.7 sf Perim= 4.0' r= 0.42'
n= 0.040 Mountain streams
P2= 2.72"
25.9 1,774 Total

21.00169 HydroCAD NOAA 24-hr A 10-Year Rainfall=3.89"
Prepared by McGill Associates Printed 1/23/2023
HydroCAD® 10.20-2b s/n 04263 © 2021 HydroCAD Software Solutions LLC Page 4
Summary for Link 6L: Existing Stream DA
Inflow Area = 16.483 ac, 18.64% Impervious, Inflow Depth > 0.76" for 10-Year event
Inflow = 9.13 cfs @ 12.37 hrs, Volume= 1.038 af
Primary = 9.13 cfs @ 12.37 hrs, Volume= 1.038 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-20.00 hrs, dt= 0.01 hrs

21.00169 HydroCAD NOAA 24-hr A 10-Year Rainfall=3.89"
Prepared by McGill Associates Printed 1/23/2023
HydroCAD® 10.20-2b s/n 04263 © 2021 HydroCAD Software Solutions LLC
w
3
0
L
Link 6L: Existing Stream DA
Hydrograph
/
10/
9Y
8Y
7Y
6Y
5Y
4Y
3Y
2Y
IiifArea=16.483 ac
7
2
[Q11rf
9.13 cfs
9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)