SW1230701_Design Calculations_20230719

Appendix D
Pipe, Outlet Protection, and Ditch Calcs

(4S 5S
3S
P4 D P5 D
P3 DA ACB
CB 6P
1S 9P A
P1 DAN JP3
2S P
P5
P2DANij
CB
/io \ 7P
P1 P2
KSubcat Reach •on• Link Routing Diagram for Presnell Campground-pipes-HydroCAD
�____ Prepared by ABH, Printed 5/19/2023
HydroCAD®10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC

Presnell Campground -pipes- HydroCAD
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 2
Rainfall Events Listing (selected events)
Event# Event Storm Type Curve Mode Duration B/B Depth AMC
Name (hours) (inches)
1 10-year, 24-hour Type II 24-hr Default 24.00 1 6.07 2

Presnell Campground -pipes- HydroCAD
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 3
Area Listing (all nodes)
Area CN Description
(acres) (subcatchment-numbers)
0.397 96 Gravel surface, HSG B (1S, 2S, 3S, 4S, 5S)
5.443 58 Woods/grass comb., Good, HSG B (1S, 2S, 3S, 4S, 5S)
5.840 61 TOTAL AREA

Presnell Campground -pipes- HydroCAD
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 4
Soil Listing (all nodes)
Area Soil Subcatchment
(acres) Group Numbers
0.000 HSG A
5.840 HSG B 1 S, 2S, 3S, 4S, 5S
0.000 HSG C
0.000 HSG D
0.000 Other
5.840 TOTAL AREA

Presnell Campground -pipes- HydroCAD
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 5
Ground Covers (all nodes)
HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment
(acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers
0.000 0.397 0.000 0.000 0.000 0.397 Gravel surface 1 S, 2S,
3S, 4S,
5S
0.000 5.443 0.000 0.000 0.000 5.443 Woods/grass comb., Good 1S, 2S,
3S, 4S,
5S
0.000 5.840 0.000 0.000 0.000 5.840 TOTAL AREA

Presnell Campground -pipes- HydroCAD
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 6
Pipe Listing (all nodes)
Line# Node In-Invert Out-Invert Length Slope n Width Diam/Height Inside-Fill
Number (feet) (feet) (feet) (ft/ft) (inches) (inches) (inches)
1 6P 2,797.00 2,794.00 26.0 0.1154 0.013 0.0 15.0 0.0
2 7P 2,715.00 2,710.00 36.0 0.1389 0.013 0.0 15.0 0.0
3 8P 2,783.00 2,780.00 24.0 0.1250 0.013 0.0 18.0 0.0
4 9P 2,750.00 2,742.00 39.0 0.2051 0.013 0.0 15.0 0.0
5 10P 2,681.50 2,681.00 39.0 0.0128 0.013 0.0 24.0 0.0

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 7
Time span=0.00-120.00 hrs, dt=0.04 hrs, 3001 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment 1 S: P1 DA Runoff Area=116,888 sf 0.00% Impervious Runoff Depth=1.97"
Tc=5.0 min CN=60 Runoff=9.59 cfs 0.440 af
Subcatchment2S: P2 DA Runoff Area=35,004 sf 0.00% Impervious Runoff Depth=2.05"
Tc=5.0 min CN=61 Runoff=3.00 cfs 0.137 af
Subcatchment3S: P3 DA Runoff Area=11,213 sf 0.00% Impervious Runoff Depth=2.49"
Tc=5.0 min CN=66 Runoff=1.18 cfs 0.053 of
Subcatchment4S: P4 DA Runoff Area=10,763 sf 0.00% Impervious Runoff Depth=2.49"
Tc=5.0 min CN=66 Runoff=1.13 cfs 0.051 af
Subcatchment5S: P5 DA Runoff Area=80,508 sf 0.00% Impervious Runoff Depth=1.97"
Tc=5.0 min CN=60 Runoff=6.60 cfs 0.303 af
Pond 6P: P4 Peak Elev=2,797.51' Inflow=1.13 cfs 0.051 af
15.0" Round Culvert n=0.013 L=26.0' S=0.1154 '/' Outflow=1.13 cfs 0.051 af
Pond 7P: P2 Peak Elev=2,716.11' Inflow=4.13 cfs 0.189 af
15.0" Round Culvert n=0.013 L=36.0' S=0.1389 '/' Outflow=4.13 cfs 0.189 af
Pond 8P: P5 Peak Elev=2,784.35' Inflow=6.60 cfs 0.303 af
18.0" Round Culvert n=0.013 L=24.0' S=0.1250 '/' Outflow=6.60 cfs 0.303 af
Pond 9P: P3 Peak Elev=2,750.52' Inflow=1.18 cfs 0.053 af
15.0" Round Culvert n=0.013 L=39.0' S=0.2051 '/' Outflow=1.18 cfs 0.053 af
Pond 10P: P1 Peak EIev=2,683.10' Inflow=10.76 cfs 0.493 af
24.0" Round Culvert n=0.013 L=39.0' S=0.0128'/' Outflow=10.76 cfs 0.493 af
Total Runoff Area = 5.840 ac Runoff Volume = 0.985 af Average Runoff Depth = 2.02"
100.00% Pervious = 5.840 ac 0.00% Impervious = 0.000 ac

Presnell Campground -pipes- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 8
Summary for Subcatchment 1 S: P1 DA
Runoff = 9.59 cfs @ 11.97 hrs, Volume= 0.440 af, Depth= 1.97"
Routed to Pond 10P : P1
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Type II 24-hr 10-year, 24-hour Rainfall=6.07"
Area (sf) CN Description
5,012 96 Gravel surface, HSG B
111,876 58 Woods/grass comb., Good, HSG B
116,888 60 Weighted Average
116,888 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 1S: P1 DA
Hydrograph
- - ■Runoff
101/ 9.59 cfs
Typ� Il� ir -
9 16-yler -
a
244hou _Rainfalli6.O77 -
7 I RInof# 114rea116,&88-f
6= / Run 9ff V_ Ii. me0. 4Qaf
5-� unoff Depth=1.97"
4_ �c 5.0tin4
3/f 1 / F
21
1-
///
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 9
Hydrograph for Subcatchment 1S: P1 DA
Time Precip. Excess Runoff Time Precip. Excess Runoff
(hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs)
0.00 0.00 0.00 0.00 106.00 6.07 1.97 0.00
2.00 0.13 0.00 0.00 108.00 6.07 1.97 0.00
4.00 0.29 0.00 0.00 110.00 6.07 1.97 0.00
6.00 0.49 0.00 0.00 112.00 6.07 1.97 0.00
8.00 0.73 0.00 0.00 114.00 6.07 1.97 0.00
10.00 1.10 0.00 0.00 116.00 6.07 1.97 0.00
12.00 4.02 0.77 8.61 118.00 6.07 1.97 0.00
14.00 4.98 1.29 0.37 120.00 6.07 1.97 0.00
16.00 5.34 1.51 0.24
18.00 5.59 1.66 0.19
20.00 5.78 1.78 0.14
22.00 5.93 1.88 0.13
24.00 6.07 1.97 0.12
26.00 6.07 1.97 0.00
28.00 6.07 1.97 0.00
30.00 6.07 1.97 0.00
32.00 6.07 1.97 0.00
34.00 6.07 1.97 0.00
36.00 6.07 1.97 0.00
38.00 6.07 1.97 0.00
40.00 6.07 1.97 0.00
42.00 6.07 1.97 0.00
44.00 6.07 1.97 0.00
46.00 6.07 1.97 0.00
48.00 6.07 1.97 0.00
50.00 6.07 1.97 0.00
52.00 6.07 1.97 0.00
54.00 6.07 1.97 0.00
56.00 6.07 1.97 0.00
58.00 6.07 1.97 0.00
60.00 6.07 1.97 0.00
62.00 6.07 1.97 0.00
64.00 6.07 1.97 0.00
66.00 6.07 1.97 0.00
68.00 6.07 1.97 0.00
70.00 6.07 1.97 0.00
72.00 6.07 1.97 0.00
74.00 6.07 1.97 0.00
76.00 6.07 1.97 0.00
78.00 6.07 1.97 0.00
80.00 6.07 1.97 0.00
82.00 6.07 1.97 0.00
84.00 6.07 1.97 0.00
86.00 6.07 1.97 0.00
88.00 6.07 1.97 0.00
90.00 6.07 1.97 0.00
92.00 6.07 1.97 0.00
94.00 6.07 1.97 0.00
96.00 6.07 1.97 0.00
98.00 6.07 1.97 0.00
100.00 6.07 1.97 0.00
102.00 6.07 1.97 0.00
104.00 6.07 1.97 0.00

Presnell Campground -pipes- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 10
Summary for Subcatchment 2S: P2 DA
Runoff = 3.00 cfs @ 11.97 hrs, Volume= 0.137 af, Depth= 2.05"
Routed to Pond 7P : P2
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Type II 24-hr 10-year, 24-hour Rainfall=6.07"
Area (sf) CN Description
2,532 96 Gravel surface, HSG B
32,472 58 Woods/grass comb., Good, HSG B
35,004 61 Weighted Average
35,004 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 2S: P2 DA
Hydrograph
•Runoff
3.00 cfs
IT�pe 1124-h r
I 1 o-ylear
24-hburt RainfaII06.O77
2 I 1p ff kre-a=315,Q04 f
Runoff Volume-0.137 of
Runoff Deph=2.05
Tc15.0 to i i
GN6h
0 ///////7���I//
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 11
Hydrograph for Subcatchment 2S: P2 DA
Time Precip. Excess Runoff Time Precip. Excess Runoff
(hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs)
0.00 0.00 0.00 0.00 106.00 6.07 2.05 0.00
2.00 0.13 0.00 0.00 108.00 6.07 2.05 0.00
4.00 0.29 0.00 0.00 110.00 6.07 2.05 0.00
6.00 0.49 0.00 0.00 112.00 6.07 2.05 0.00
8.00 0.73 0.00 0.00 114.00 6.07 2.05 0.00
10.00 1.10 0.00 0.00 116.00 6.07 2.05 0.00
12.00 4.02 0.82 2.69 118.00 6.07 2.05 0.00
14.00 4.98 1.36 0.11 120.00 6.07 2.05 0.00
16.00 5.34 1.58 0.07
18.00 5.59 1.74 0.06
20.00 5.78 1.86 0.04
22.00 5.93 1.96 0.04
24.00 6.07 2.05 0.04
26.00 6.07 2.05 0.00
28.00 6.07 2.05 0.00
30.00 6.07 2.05 0.00
32.00 6.07 2.05 0.00
34.00 6.07 2.05 0.00
36.00 6.07 2.05 0.00
38.00 6.07 2.05 0.00
40.00 6.07 2.05 0.00
42.00 6.07 2.05 0.00
44.00 6.07 2.05 0.00
46.00 6.07 2.05 0.00
48.00 6.07 2.05 0.00
50.00 6.07 2.05 0.00
52.00 6.07 2.05 0.00
54.00 6.07 2.05 0.00
56.00 6.07 2.05 0.00
58.00 6.07 2.05 0.00
60.00 6.07 2.05 0.00
62.00 6.07 2.05 0.00
64.00 6.07 2.05 0.00
66.00 6.07 2.05 0.00
68.00 6.07 2.05 0.00
70.00 6.07 2.05 0.00
72.00 6.07 2.05 0.00
74.00 6.07 2.05 0.00
76.00 6.07 2.05 0.00
78.00 6.07 2.05 0.00
80.00 6.07 2.05 0.00
82.00 6.07 2.05 0.00
84.00 6.07 2.05 0.00
86.00 6.07 2.05 0.00
88.00 6.07 2.05 0.00
90.00 6.07 2.05 0.00
92.00 6.07 2.05 0.00
94.00 6.07 2.05 0.00
96.00 6.07 2.05 0.00
98.00 6.07 2.05 0.00
100.00 6.07 2.05 0.00
102.00 6.07 2.05 0.00
104.00 6.07 2.05 0.00

Presnell Campground -pipes- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 12
Summary for Subcatchment 3S: P3 DA
Runoff = 1.18 cfs @ 11.96 hrs, Volume= 0.053 af, Depth= 2.49"
Routed to Pond 9P : P3
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Type II 24-hr 10-year, 24-hour Rainfall=6.07"
Area (sf) CN Description
2,274 96 Gravel surface, HSG B
8,939 58 Woods/grass comb., Good, HSG B
11,213 66 Weighted Average
11,213 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 3S: P3 DA
Hydrograph
/ I 0 Runoff
1.18 cfs
Typ II 24-hr
i�ye r
24-hdurt Rainfall=6.07"
Runciff }4rea=11,213 sf
RL n ff V?Iume-O.95�3 �f
unoff Deph=2.49
Tc15.0t1nii
GN=66
0 ,/////
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 13
Hydrograph for Subcatchment 3S: P3 DA
Time Precip. Excess Runoff Time Precip. Excess Runoff
(hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs)
0.00 0.00 0.00 0.00 106.00 6.07 2.49 0.00
2.00 0.13 0.00 0.00 108.00 6.07 2.49 0.00
4.00 0.29 0.00 0.00 110.00 6.07 2.49 0.00
6.00 0.49 0.00 0.00 112.00 6.07 2.49 0.00
8.00 0.73 0.00 0.00 114.00 6.07 2.49 0.00
10.00 1.10 0.00 0.00 116.00 6.07 2.49 0.00
12.00 4.02 1.10 1.04 118.00 6.07 2.49 0.00
14.00 4.98 1.71 0.04 120.00 6.07 2.49 0.00
16.00 5.34 1.96 0.03
18.00 5.59 2.14 0.02
20.00 5.78 2.28 0.02
22.00 5.93 2.39 0.01
24.00 6.07 2.49 0.01
26.00 6.07 2.49 0.00
28.00 6.07 2.49 0.00
30.00 6.07 2.49 0.00
32.00 6.07 2.49 0.00
34.00 6.07 2.49 0.00
36.00 6.07 2.49 0.00
38.00 6.07 2.49 0.00
40.00 6.07 2.49 0.00
42.00 6.07 2.49 0.00
44.00 6.07 2.49 0.00
46.00 6.07 2.49 0.00
48.00 6.07 2.49 0.00
50.00 6.07 2.49 0.00
52.00 6.07 2.49 0.00
54.00 6.07 2.49 0.00
56.00 6.07 2.49 0.00
58.00 6.07 2.49 0.00
60.00 6.07 2.49 0.00
62.00 6.07 2.49 0.00
64.00 6.07 2.49 0.00
66.00 6.07 2.49 0.00
68.00 6.07 2.49 0.00
70.00 6.07 2.49 0.00
72.00 6.07 2.49 0.00
74.00 6.07 2.49 0.00
76.00 6.07 2.49 0.00
78.00 6.07 2.49 0.00
80.00 6.07 2.49 0.00
82.00 6.07 2.49 0.00
84.00 6.07 2.49 0.00
86.00 6.07 2.49 0.00
88.00 6.07 2.49 0.00
90.00 6.07 2.49 0.00
92.00 6.07 2.49 0.00
94.00 6.07 2.49 0.00
96.00 6.07 2.49 0.00
98.00 6.07 2.49 0.00
100.00 6.07 2.49 0.00
102.00 6.07 2.49 0.00
104.00 6.07 2.49 0.00

Presnell Campground -pipes- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 14
Summary for Subcatchment 4S: P4 DA
Runoff = 1.13 cfs @ 11.96 hrs, Volume= 0.051 af, Depth= 2.49"
Routed to Pond 6P : P4
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Type II 24-hr 10-year, 24-hour Rainfall=6.07"
Area (sf) CN Description
2,341 96 Gravel surface, HSG B
8,422 58 Woods/grass comb., Good, HSG B
10,763 66 Weighted Average
10,763 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 4S: P4 DA
Hydrograph
/
0 Runoff
- 1.13 cfs
i-1;13e 1124-h r
1 / I I I I- 1 7 7 17 T1 o-yeir
24-hdurt Rainfall=6.07"
Runciff }4rea=10,763 sf
RL n ff V?lume-O.951 �f
unoff Deph=2.49
Tc15.0t1nii
GN=66
0 ,/////
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 15
Hydrograph for Subcatchment 4S: P4 DA
Time Precip. Excess Runoff Time Precip. Excess Runoff
(hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs)
0.00 0.00 0.00 0.00 106.00 6.07 2.49 0.00
2.00 0.13 0.00 0.00 108.00 6.07 2.49 0.00
4.00 0.29 0.00 0.00 110.00 6.07 2.49 0.00
6.00 0.49 0.00 0.00 112.00 6.07 2.49 0.00
8.00 0.73 0.00 0.00 114.00 6.07 2.49 0.00
10.00 1.10 0.00 0.00 116.00 6.07 2.49 0.00
12.00 4.02 1.10 1.00 118.00 6.07 2.49 0.00
14.00 4.98 1.71 0.04 120.00 6.07 2.49 0.00
16.00 5.34 1.96 0.03
18.00 5.59 2.14 0.02
20.00 5.78 2.28 0.01
22.00 5.93 2.39 0.01
24.00 6.07 2.49 0.01
26.00 6.07 2.49 0.00
28.00 6.07 2.49 0.00
30.00 6.07 2.49 0.00
32.00 6.07 2.49 0.00
34.00 6.07 2.49 0.00
36.00 6.07 2.49 0.00
38.00 6.07 2.49 0.00
40.00 6.07 2.49 0.00
42.00 6.07 2.49 0.00
44.00 6.07 2.49 0.00
46.00 6.07 2.49 0.00
48.00 6.07 2.49 0.00
50.00 6.07 2.49 0.00
52.00 6.07 2.49 0.00
54.00 6.07 2.49 0.00
56.00 6.07 2.49 0.00
58.00 6.07 2.49 0.00
60.00 6.07 2.49 0.00
62.00 6.07 2.49 0.00
64.00 6.07 2.49 0.00
66.00 6.07 2.49 0.00
68.00 6.07 2.49 0.00
70.00 6.07 2.49 0.00
72.00 6.07 2.49 0.00
74.00 6.07 2.49 0.00
76.00 6.07 2.49 0.00
78.00 6.07 2.49 0.00
80.00 6.07 2.49 0.00
82.00 6.07 2.49 0.00
84.00 6.07 2.49 0.00
86.00 6.07 2.49 0.00
88.00 6.07 2.49 0.00
90.00 6.07 2.49 0.00
92.00 6.07 2.49 0.00
94.00 6.07 2.49 0.00
96.00 6.07 2.49 0.00
98.00 6.07 2.49 0.00
100.00 6.07 2.49 0.00
102.00 6.07 2.49 0.00
104.00 6.07 2.49 0.00

Presnell Campground -pipes- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 16
Summary for Subcatchment 5S: P5 DA
Runoff = 6.60 cfs @ 11.97 hrs, Volume= 0.303 af, Depth= 1.97"
Routed to Pond 8P : P5
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Type II 24-hr 10-year, 24-hour Rainfall=6.07"
Area (sf) CN Description
5,127 96 Gravel surface, HSG B
75,381 58 Woods/grass comb., Good, HSG B
80,508 60 Weighted Average
80,508 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 5S: P5 DA
Hydrograph
/ L
7-/ 6.60 cfs ■Runoff
T� - ITp l l 24-h r
6Y / i o-ylear
5- 24.hourt-Rainfdll*.07-1"
Ru ngff Areal=80,508 sf -
15 4 / RL npff V?Iume-0. 0�3 �f
01-u-noff Deph=1.97' -
3 / Tc-15.0
2- GN6O
/ I I
0 //////// /fill/ll/ll/fill(/l//////////////////////////////////////////////////////////
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 17
Hydrograph for Subcatchment 5S: P5 DA
Time Precip. Excess Runoff Time Precip. Excess Runoff
(hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs)
0.00 0.00 0.00 0.00 106.00 6.07 1.97 0.00
2.00 0.13 0.00 0.00 108.00 6.07 1.97 0.00
4.00 0.29 0.00 0.00 110.00 6.07 1.97 0.00
6.00 0.49 0.00 0.00 112.00 6.07 1.97 0.00
8.00 0.73 0.00 0.00 114.00 6.07 1.97 0.00
10.00 1.10 0.00 0.00 116.00 6.07 1.97 0.00
12.00 4.02 0.77 5.93 118.00 6.07 1.97 0.00
14.00 4.98 1.29 0.25 120.00 6.07 1.97 0.00
16.00 5.34 1.51 0.16
18.00 5.59 1.66 0.13
20.00 5.78 1.78 0.10
22.00 5.93 1.88 0.09
24.00 6.07 1.97 0.08
26.00 6.07 1.97 0.00
28.00 6.07 1.97 0.00
30.00 6.07 1.97 0.00
32.00 6.07 1.97 0.00
34.00 6.07 1.97 0.00
36.00 6.07 1.97 0.00
38.00 6.07 1.97 0.00
40.00 6.07 1.97 0.00
42.00 6.07 1.97 0.00
44.00 6.07 1.97 0.00
46.00 6.07 1.97 0.00
48.00 6.07 1.97 0.00
50.00 6.07 1.97 0.00
52.00 6.07 1.97 0.00
54.00 6.07 1.97 0.00
56.00 6.07 1.97 0.00
58.00 6.07 1.97 0.00
60.00 6.07 1.97 0.00
62.00 6.07 1.97 0.00
64.00 6.07 1.97 0.00
66.00 6.07 1.97 0.00
68.00 6.07 1.97 0.00
70.00 6.07 1.97 0.00
72.00 6.07 1.97 0.00
74.00 6.07 1.97 0.00
76.00 6.07 1.97 0.00
78.00 6.07 1.97 0.00
80.00 6.07 1.97 0.00
82.00 6.07 1.97 0.00
84.00 6.07 1.97 0.00
86.00 6.07 1.97 0.00
88.00 6.07 1.97 0.00
90.00 6.07 1.97 0.00
92.00 6.07 1.97 0.00
94.00 6.07 1.97 0.00
96.00 6.07 1.97 0.00
98.00 6.07 1.97 0.00
100.00 6.07 1.97 0.00
102.00 6.07 1.97 0.00
104.00 6.07 1.97 0.00

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 18
Summary for Pond 6P: P4
Inflow Area = 0.247 ac, 0.00% Impervious, Inflow Depth = 2.49" for 10-year, 24-hour event
Inflow = 1.13 cfs @ 11.96 hrs, Volume= 0.051 af
Outflow = 1.13 cfs @ 11.96 hrs, Volume= 0.051 af, Atten= 0%, Lag= 0.0 min
Primary = 1.13 cfs @ 11.96 hrs, Volume= 0.051 af
Routed to Pond 7P : P2
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Peak Elev= 2,797.51' @ 11.96 hrs
Flood Elev= 2,800.00'
Device Routing Invert Outlet Devices
#1 Primary 2,797.00' 15.0" Round Culvert
L= 26.0' CPP, square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 2,797.00' /2,794.00' S= 0.1154 '/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior, Flow Area= 1.23 sf
Primary OutFlow Max=1.12 cfs @ 11.96 hrs HW=2,797.50' (Free Discharge)
4-1=Culvert (Inlet Controls 1.12 cfs @ 2.42 fps)
Pond 6P: P4
Hydrograph
/ 1 1'� rf ❑Inflow 1
❑Primary
.13 cfs IInflow Area=0.247 ac
Peak Elev=2,797.51'
15.0"
Round Culvert
n=0.013
L=26.0'
S=0.1154 '/'
0 /
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 19
Hydrograph for Pond 6P: P4
Time Inflow Elevation Primary Time Inflow Elevation Primary
(hours) (cfs) (feet) (cfs) (hours) (cfs) (feet) (cfs)
0.00 0.00 2,797.00 0.00 106.00 0.00 2,797.00 0.00
2.00 0.00 2,797.00 0.00 108.00 0.00 2,797.00 0.00
4.00 0.00 2,797.00 0.00 110.00 0.00 2,797.00 0.00
6.00 0.00 2,797.00 0.00 112.00 0.00 2,797.00 0.00
8.00 0.00 2,797.00 0.00 114.00 0.00 2,797.00 0.00
10.00 0.00 2,797.01 0.00 116.00 0.00 2,797.00 0.00
12.00 1.00 2,797.47 1.00 118.00 0.00 2,797.00 0.00
14.00 0.04 2,797.09 0.04 120.00 0.00 2,797.00 0.00
16.00 0.03 2,797.07 0.03
18.00 0.02 2,797.06 0.02
20.00 0.01 2,797.05 0.01
22.00 0.01 2,797.05 0.01
24.00 0.01 2,797.05 0.01
26.00 0.00 2,797.00 0.00
28.00 0.00 2,797.00 0.00
30.00 0.00 2,797.00 0.00
32.00 0.00 2,797.00 0.00
34.00 0.00 2,797.00 0.00
36.00 0.00 2,797.00 0.00
38.00 0.00 2,797.00 0.00
40.00 0.00 2,797.00 0.00
42.00 0.00 2,797.00 0.00
44.00 0.00 2,797.00 0.00
46.00 0.00 2,797.00 0.00
48.00 0.00 2,797.00 0.00
50.00 0.00 2,797.00 0.00
52.00 0.00 2,797.00 0.00
54.00 0.00 2,797.00 0.00
56.00 0.00 2,797.00 0.00
58.00 0.00 2,797.00 0.00
60.00 0.00 2,797.00 0.00
62.00 0.00 2,797.00 0.00
64.00 0.00 2,797.00 0.00
66.00 0.00 2,797.00 0.00
68.00 0.00 2,797.00 0.00
70.00 0.00 2,797.00 0.00
72.00 0.00 2,797.00 0.00
74.00 0.00 2,797.00 0.00
76.00 0.00 2,797.00 0.00
78.00 0.00 2,797.00 0.00
80.00 0.00 2,797.00 0.00
82.00 0.00 2,797.00 0.00
84.00 0.00 2,797.00 0.00
86.00 0.00 2,797.00 0.00
88.00 0.00 2,797.00 0.00
90.00 0.00 2,797.00 0.00
92.00 0.00 2,797.00 0.00
94.00 0.00 2,797.00 0.00
96.00 0.00 2,797.00 0.00
98.00 0.00 2,797.00 0.00
100.00 0.00 2,797.00 0.00
102.00 0.00 2,797.00 0.00
104.00 0.00 2,797.00 0.00

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 20
Summary for Pond 7P: P2
Inflow Area = 1.051 ac, 0.00% Impervious, Inflow Depth = 2.16" for 10-year, 24-hour event
Inflow = 4.13 cfs @ 11.96 hrs, Volume= 0.189 of
Outflow = 4.13 cfs @ 11.96 hrs, Volume= 0.189 af, Atten= 0%, Lag= 0.0 min
Primary = 4.13 cfs @ 11.96 hrs, Volume= 0.189 af
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Peak Elev= 2,716.11' @ 11.96 hrs
Flood Elev= 2,718.00'
Device Routing Invert Outlet Devices
#1 Primary 2,715.00' 15.0" Round Culvert
L= 36.0' CPP, square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 2,715.00' /2,710.00' S= 0.1389 '/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior, Flow Area= 1.23 sf
Primary OutFlow Max=4.07 cfs @ 11.96 hrs HW=2,716.10' (Free Discharge)
4-1=Culvert (Inlet Controls 4.07 cfs @ 3.57 fps)
Pond 7P: P2
Hydrograph
d 1 rf ❑Inflow
❑Primary
4.13 cfs Inflow Area=1 .051 ac
4
3
Peak Elev=2,716.11'
15.0"
Round Culvert
-
n=0.013
2 L=36.0'
S=0.1389 '/'
1
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 21
Hydrograph for Pond 7P: P2
Time Inflow Elevation Primary Time Inflow Elevation Primary
(hours) (cfs) (feet) (cfs) (hours) (cfs) (feet) (cfs)
0.00 0.00 2,715.00 0.00 106.00 0.00 2,715.00 0.00
2.00 0.00 2,715.00 0.00 108.00 0.00 2,715.00 0.00
4.00 0.00 2,715.00 0.00 110.00 0.00 2,715.00 0.00
6.00 0.00 2,715.00 0.00 112.00 0.00 2,715.00 0.00
8.00 0.00 2,715.00 0.00 114.00 0.00 2,715.00 0.00
10.00 0.00 2,715.01 0.00 116.00 0.00 2,715.00 0.00
12.00 3.68 2,716.02 3.68 118.00 0.00 2,715.00 0.00
14.00 0.15 2,715.18 0.15 120.00 0.00 2,715.00 0.00
16.00 0.10 2,715.14 0.10
18.00 0.08 2,715.12 0.08
20.00 0.06 2,715.11 0.06
22.00 0.05 2,715.10 0.05
24.00 0.05 2,715.10 0.05
26.00 0.00 2,715.00 0.00
28.00 0.00 2,715.00 0.00
30.00 0.00 2,715.00 0.00
32.00 0.00 2,715.00 0.00
34.00 0.00 2,715.00 0.00
36.00 0.00 2,715.00 0.00
38.00 0.00 2,715.00 0.00
40.00 0.00 2,715.00 0.00
42.00 0.00 2,715.00 0.00
44.00 0.00 2,715.00 0.00
46.00 0.00 2,715.00 0.00
48.00 0.00 2,715.00 0.00
50.00 0.00 2,715.00 0.00
52.00 0.00 2,715.00 0.00
54.00 0.00 2,715.00 0.00
56.00 0.00 2,715.00 0.00
58.00 0.00 2,715.00 0.00
60.00 0.00 2,715.00 0.00
62.00 0.00 2,715.00 0.00
64.00 0.00 2,715.00 0.00
66.00 0.00 2,715.00 0.00
68.00 0.00 2,715.00 0.00
70.00 0.00 2,715.00 0.00
72.00 0.00 2,715.00 0.00
74.00 0.00 2,715.00 0.00
76.00 0.00 2,715.00 0.00
78.00 0.00 2,715.00 0.00
80.00 0.00 2,715.00 0.00
82.00 0.00 2,715.00 0.00
84.00 0.00 2,715.00 0.00
86.00 0.00 2,715.00 0.00
88.00 0.00 2,715.00 0.00
90.00 0.00 2,715.00 0.00
92.00 0.00 2,715.00 0.00
94.00 0.00 2,715.00 0.00
96.00 0.00 2,715.00 0.00
98.00 0.00 2,715.00 0.00
100.00 0.00 2,715.00 0.00
102.00 0.00 2,715.00 0.00
104.00 0.00 2,715.00 0.00

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 22
Summary for Pond 8P: P5
Inflow Area = 1.848 ac, 0.00% Impervious, Inflow Depth = 1.97" for 10-year, 24-hour event
Inflow = 6.60 cfs @ 11.97 hrs, Volume= 0.303 af
Outflow = 6.60 cfs @ 11.97 hrs, Volume= 0.303 af, Atten= 0%, Lag= 0.0 min
Primary = 6.60 cfs @ 11.97 hrs, Volume= 0.303 af
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Peak Elev= 2,784.35' @ 11.97 hrs
Flood Elev= 2,786.00'
Device Routing Invert Outlet Devices
#1 Primary 2,783.00' 18.0" Round Culvert
L= 24.0' CPP, square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 2,783.00' /2,780.00' S= 0.1250 '/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior, Flow Area= 1.77 sf
Primary OutFlow Max=6.49 cfs @ 11.97 hrs HW=2,784.33' (Free Discharge)
4-1=Culvert (Inlet Controls 6.49 cfs @ 3.92 fps)
Pond 8P: P5
Hydrograph
/ I
❑Inflow
R An rf I ❑Primary
7 6.60 cfs Inflow Area=1 .848 a�
6 / Peak Elev=2,784.35'
18.0"
5
/ Round Culvert
• -
• 47 n=0.013
3 L=24.0'
S=0.1250 '/'
2 /
1
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 23
Hydrograph for Pond 8P: P5
Time Inflow Elevation Primary Time Inflow Elevation Primary
(hours) (cfs) (feet) (cfs) (hours) (cfs) (feet) (cfs)
0.00 0.00 2,783.00 0.00 106.00 0.00 2,783.00 0.00
2.00 0.00 2,783.00 0.00 108.00 0.00 2,783.00 0.00
4.00 0.00 2,783.00 0.00 110.00 0.00 2,783.00 0.00
6.00 0.00 2,783.00 0.00 112.00 0.00 2,783.00 0.00
8.00 0.00 2,783.00 0.00 I 114.00 0.00 2,783.00 0.00
10.00 0.00 2,783.00 0.00 116.00 0.00 2,783.00 0.00
12.00 5.93 2,784.24 5.93 118.00 0.00 2,783.00 0.00
14.00 0.25 2,783.22 0.25 120.00 0.00 2,783.00 0.00
16.00 0.16 2,783.17 0.16
18.00 0.13 2,783.15 0.13
20.00 0.10 2,783.13 0.10
22.00 0.09 2,783.13 0.09
24.00 0.08 2,783.12 0.08
26.00 0.00 2,783.00 0.00
28.00 0.00 2,783.00 0.00
30.00 0.00 2,783.00 0.00
32.00 0.00 2,783.00 0.00
34.00 0.00 2,783.00 0.00
36.00 0.00 2,783.00 0.00
38.00 0.00 2,783.00 0.00
40.00 0.00 2,783.00 0.00
42.00 0.00 2,783.00 0.00
44.00 0.00 2,783.00 0.00
46.00 0.00 2,783.00 0.00
48.00 0.00 2,783.00 0.00
50.00 0.00 2,783.00 0.00
52.00 0.00 2,783.00 0.00
54.00 0.00 2,783.00 0.00
56.00 0.00 2,783.00 0.00
58.00 0.00 2,783.00 0.00
60.00 0.00 2,783.00 0.00
62.00 0.00 2,783.00 0.00
64.00 0.00 2,783.00 0.00
66.00 0.00 2,783.00 0.00
68.00 0.00 2,783.00 0.00
70.00 0.00 2,783.00 0.00
72.00 0.00 2,783.00 0.00
74.00 0.00 2,783.00 0.00
76.00 0.00 2,783.00 0.00
78.00 0.00 2,783.00 0.00
80.00 0.00 2,783.00 0.00
82.00 0.00 2,783.00 0.00
84.00 0.00 2,783.00 0.00
86.00 0.00 2,783.00 0.00
88.00 0.00 2,783.00 0.00
90.00 0.00 2,783.00 0.00
92.00 0.00 2,783.00 0.00
94.00 0.00 2,783.00 0.00
96.00 0.00 2,783.00 0.00
98.00 0.00 2,783.00 0.00
100.00 0.00 2,783.00 0.00
102.00 0.00 2,783.00 0.00
104.00 0.00 2,783.00 0.00

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 24
Summary for Pond 9P: P3
Inflow Area = 0.257 ac, 0.00% Impervious, Inflow Depth = 2.49" for 10-year, 24-hour event
Inflow = 1.18 cfs @ 11.96 hrs, Volume= 0.053 af
Outflow = 1.18 cfs @ 11.96 hrs, Volume= 0.053 af, Atten= 0%, Lag= 0.0 min
Primary = 1.18 cfs @ 11.96 hrs, Volume= 0.053 af
Routed to Pond 10P : P1
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Peak Elev= 2,750.52' @ 11.96 hrs
Flood Elev= 2,754.00'
Device Routing Invert Outlet Devices
#1 Primary 2,750.00' 15.0" Round Culvert
L= 39.0' CPP, square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 2,750.00' /2,742.00' S= 0.2051 '/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior, Flow Area= 1.23 sf
Primary OutFlow Max=1.17 cfs @ 11.96 hrs HW=2,750.52' (Free Discharge)
4-1=Culvert (Inlet Controls 1.17 cfs @ 2.44 fps)
Pond 9P: P3
Hydrograph
/I 1 1 R rf ❑Inflow 1
❑Primary
.18 cfs Inflow Area=0.257 ac
/ Peak Elev=2,750.52'
1-
15.0"
Round Culvert
/
n=0.013
L=39.0'
/ S=0.2051 '/'
0 /
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 25
Hydrograph for Pond 9P: P3
Time Inflow Elevation Primary Time Inflow Elevation Primary
(hours) (cfs) (feet) (cfs) (hours) (cfs) (feet) (cfs)
0.00 0.00 2,750.00 0.00 106.00 0.00 2,750.00 0.00
2.00 0.00 2,750.00 0.00 108.00 0.00 2,750.00 0.00
4.00 0.00 2,750.00 0.00 110.00 0.00 2,750.00 0.00
6.00 0.00 2,750.00 0.00 112.00 0.00 2,750.00 0.00
8.00 0.00 2,750.00 0.00 114.00 0.00 2,750.00 0.00
10.00 0.00 2,750.01 0.00 116.00 0.00 2,750.00 0.00
12.00 1.04 2,750.48 1.04 118.00 0.00 2,750.00 0.00
14.00 0.04 2,750.09 0.04 , 120.00 0.00 2,750.00 0.00
16.00 0.03 2,750.07 0.03
18.00 0.02 2,750.06 0.02
20.00 0.02 2,750.05 0.02
22.00 0.01 2,750.05 0.01
24.00 0.01 2,750.05 0.01
26.00 0.00 2,750.00 0.00
28.00 0.00 2,750.00 0.00
30.00 0.00 2,750.00 0.00
32.00 0.00 2,750.00 0.00
34.00 0.00 2,750.00 0.00
36.00 0.00 2,750.00 0.00
38.00 0.00 2,750.00 0.00
40.00 0.00 2,750.00 0.00
42.00 0.00 2,750.00 0.00
44.00 0.00 2,750.00 0.00
46.00 0.00 2,750.00 0.00
48.00 0.00 2,750.00 0.00
50.00 0.00 2,750.00 0.00
52.00 0.00 2,750.00 0.00
54.00 0.00 2,750.00 0.00
56.00 0.00 2,750.00 0.00
58.00 0.00 2,750.00 0.00
60.00 0.00 2,750.00 0.00
62.00 0.00 2,750.00 0.00
64.00 0.00 2,750.00 0.00
66.00 0.00 2,750.00 0.00
68.00 0.00 2,750.00 0.00
70.00 0.00 2,750.00 0.00
72.00 0.00 2,750.00 0.00
74.00 0.00 2,750.00 0.00
76.00 0.00 2,750.00 0.00
78.00 0.00 2,750.00 0.00
80.00 0.00 2,750.00 0.00
82.00 0.00 2,750.00 0.00
84.00 0.00 2,750.00 0.00
86.00 0.00 2,750.00 0.00
88.00 0.00 2,750.00 0.00
90.00 0.00 2,750.00 0.00
92.00 0.00 2,750.00 0.00
94.00 0.00 2,750.00 0.00
96.00 0.00 2,750.00 0.00
98.00 0.00 2,750.00 0.00
100.00 0.00 2,750.00 0.00
102.00 0.00 2,750.00 0.00
104.00 0.00 2,750.00 0.00

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 26
Summary for Pond 10P: P1
Inflow Area = 2.941 ac, 0.00% Impervious, Inflow Depth = 2.01" for 10-year, 24-hour event
Inflow = 10.76 cfs @ 11.97 hrs, Volume= 0.493 af
Outflow = 10.76 cfs @ 11.97 hrs, Volume= 0.493 af, Atten= 0%, Lag= 0.0 min
Primary = 10.76 cfs @ 11.97 hrs, Volume= 0.493 af
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Peak Elev= 2,683.10' @ 11.97 hrs
Flood Elev= 2,684.00'
Device Routing Invert Outlet Devices
#1 Primary 2,681.50' 24.0" Round Culvert
L= 39.0' CPP, square edge headwall, Ke= 0.500
Inlet/ Outlet Invert= 2,681.50' /2,681.00' S= 0.0128 '/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior, Flow Area= 3.14 sf
Primary OutFlow Max=10.57 cfs @ 11.97 hrs HW=2,683.08' (Free Discharge)
4-1=Culvert (Barrel Controls 10.57 cfs @ 5.47 fps)
Pond 10P: P1
Hydrograph
❑Inflow
12 I 1 n 7R rfS — ❑Primary
11 10.76 cfs I Inflow-Area-2.941-ac
10 Peak EIev=2,683.10'
9- t 24.0"
8
N 7 Round Culvert
3 6 TIT T -1 - n=0.013
0
5 - T T I fi I T I T I T L=39.0'
4- T T IT 1 '5=0.0128 '/'
3- 100
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -pipes- HydroCAD Type 11 24-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 5/19/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 27
Hydrograph for Pond 10P: P1
Time Inflow Elevation Primary Time Inflow Elevation Primary
(hours) (cfs) (feet) (cfs) (hours) (cfs) (feet) (cfs)
0.00 0.00 2,681.50 0.00 106.00 0.00 2,681.50 0.00
2.00 0.00 2,681.50 0.00 108.00 0.00 2,681.50 0.00
4.00 0.00 2,681.50 0.00 110.00 0.00 2,681.50 0.00
6.00 0.00 2,681.50 0.00 112.00 0.00 2,681.50 0.00
8.00 0.00 2,681.50 0.00 114.00 0.00 2,681.50 0.00
10.00 0.00 2,681.51 0.00 116.00 0.00 2,681.50 0.00
12.00 9.65 2,682.98 9.65 118.00 0.00 2,681.50 0.00
14.00 0.41 2,681.76 0.41 120.00 0.00 2,681.50 0.00
16.00 0.26 2,681.70 0.26
18.00 0.21 2,681.68 0.21
20.00 0.15 2,681.66 0.15
22.00 0.14 2,681.65 0.14
24.00 0.13 2,681.64 0.13
26.00 0.00 2,681.50 0.00
28.00 0.00 2,681.50 0.00
30.00 0.00 2,681.50 0.00
32.00 0.00 2,681.50 0.00
34.00 0.00 2,681.50 0.00
36.00 0.00 2,681.50 0.00
38.00 0.00 2,681.50 0.00
40.00 0.00 2,681.50 0.00
42.00 0.00 2,681.50 0.00
44.00 0.00 2,681.50 0.00
46.00 0.00 2,681.50 0.00
48.00 0.00 2,681.50 0.00
50.00 0.00 2,681.50 0.00
52.00 0.00 2,681.50 0.00
54.00 0.00 2,681.50 0.00
56.00 0.00 2,681.50 0.00
58.00 0.00 2,681.50 0.00
60.00 0.00 2,681.50 0.00
62.00 0.00 2,681.50 0.00
64.00 0.00 2,681.50 0.00
66.00 0.00 2,681.50 0.00
68.00 0.00 2,681.50 0.00
70.00 0.00 2,681.50 0.00
72.00 0.00 2,681.50 0.00
74.00 0.00 2,681.50 0.00
76.00 0.00 2,681.50 0.00
78.00 0.00 2,681.50 0.00
80.00 0.00 2,681.50 0.00
82.00 0.00 2,681.50 0.00
84.00 0.00 2,681.50 0.00
86.00 0.00 2,681.50 0.00
88.00 0.00 2,681.50 0.00
90.00 0.00 2,681.50 0.00
92.00 0.00 2,681.50 0.00
94.00 0.00 2,681.50 0.00
96.00 0.00 2,681.50 0.00
98.00 0.00 2,681.50 0.00
100.00 0.00 2,681.50 0.00
102.00 0.00 2,681.50 0.00
104.00 0.00 2,681.50 0.00

Figure 8.06a: Design of outlet protection from a round pipe flowing full,
minimum tailwater condition (Tw<0.5 diameter)
1-- , Returnto11
—La ,I //
-•11«a ter 1.' _ lfr
tionieQsg.zszisat
, , , V/
a• i�, A •
1
J
_ - _ r .4, v�4
;00, /OA ---
;0010001( if . / v
;, oar`,% ,'�/ ' , /: • n
•
al l
1 v ►—ter. ! -
3 tra
Discharge ,•:-3 -4-:1
Curves may not be extrapolated
?1 zy 14 , a In• c-f_S
P3 - lc` 1 O t. 1, Cis r-►- `)/ Din ' Co‘ 2- ,
R., 1:1 - i tzL (-, •bow LA ' (d ' o50 - 0 • r?
s.i.h.:
i / S

11S <14S>
(13s>
(9-S (20S) 26 )
SWDA <28S>
St,DA SW DA SW DA SWDA SW577DA
SW7 DA
0
21R
12R 15R 16R 18R 27R 29R
SW5
SW1
SW2 SW3 SW4 SW6 SW7
(Subca) Reach 'on.
MI Routing Diagram for Presnell Campground-ditches-HydroCAD
Prepared by ABH, Printed 6/27/2023
HydroCAD®10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC

Presnell Campground -ditches- HydroCAD
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 2
Rainfall Events Listing (selected events)
Event# Event Storm Type Curve Mode Duration B/B Depth AMC
Name (hours) (inches)
1 10-year, 24-hour Type II 24-hr Default 24.00 1 6.07 2

Presnell Campground -ditches- HydroCAD
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 3
Area Listing (all nodes)
Area CN Description
(acres) (subcatchment-numbers)
0.516 96 Gravel surface, HSG B (11 S, 13S, 14S, 19S, 20S, 26S, 28S)
5.274 58 Woods/grass comb., Good, HSG B (11 S, 13S, 14S, 19S, 20S, 26S, 28S)
5.791 61 TOTAL AREA

Presnell Campground -ditches- HydroCAD
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 4
Soil Listing (all nodes)
Area Soil Subcatchment
(acres) Group Numbers
0.000 HSG A
5.791 HSG B 11 S, 13S, 14S, 19S, 20S, 26S, 28S
0.000 HSG C
0.000 HSG D
0.000 Other
5.791 TOTAL AREA

Presnell Campground -ditches- HydroCAD
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 5
Ground Covers (all nodes)
HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment
(acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers
0.000 0.516 0.000 0.000 0.000 0.516 Gravel surface 11 S,
13S,
14S,
19S,
20S,
26S,
28S
0.000 5.274 0.000 0.000 0.000 5.274 Woods/grass comb., Good 11 S,
13S,
14S,
19S,
20S,
26S,
28S
0.000 5.791 0.000 0.000 0.000 5.791 TOTAL AREA

Presnell Campground -ditches- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 6
Time span=0.00-120.00 hrs, dt=0.04 hrs, 3001 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment 11 S: SW1 DA Runoff Area=19,675 sf 0.00% Impervious Runoff Depth=2.05"
Tc=5.0 min CN=61 Runoff=1.69 cfs 0.077 af
Subcatchment 13S: SW3 DA Runoff Area=35,004 sf 0.00% Impervious Runoff Depth=2.05"
Tc=5.0 min CN=61 Runoff=3.00 cfs 0.137 af
Subcatchment 14S: SW2 DA Runoff Area=96,044 sf 0.00% Impervious Runoff Depth=2.05"
Tc=5.0 min CN=61 Runoff=8.24 cfs 0.377 af
Subcatchment 19S: SW4 DA Runoff Area=11,213 sf 0.00% Impervious Runoff Depth=2.49"
Tc=5.0 min CN=66 Runoff=1.18 cfs 0.053 of
Subcatchment20S: SW5 DA Runoff Area=10,763 sf 0.00% Impervious Runoff Depth=2.49"
Tc=5.0 min CN=66 Runoff=1.13 cfs 0.051 af
Subcatchment26S: SW6 DA Runoff Area=63,165 sf 0.00% Impervious Runoff Depth=2.05"
Tc=5.0 min CN=61 Runoff=5.42 cfs 0.248 af
Subcatchment28S: SW7 DA Runoff Area=16,371 sf 0.00% Impervious Runoff Depth=2.23"
Tc=5.0 min CN=63 Runoff=1.53 cfs 0.070 af
Reach 12R: SW1 Avg. Flow Depth=0.33' Max Vel=2.35 fps Inflow=1.69 cfs 0.077 af
n=0.080 L=365.0' S=0.1260 '/' Capacity=17.62 cfs Outflow=1.54 cfs 0.077 af
Reach 15R: SW2 Avg. Flow Depth=0.79' Max Vel=1.95 fps Inflow=8.24 cfs 0.377 af
n=0.080 L=566.0' S=0.0283 '/' Capacity=11.12 cfs Outflow=6.76 cfs 0.377 af
Reach 16R: SW3 Avg. Flow Depth=0.34' Max Vel=3.08 fps Inflow=3.00 cfs 0.137 af
n=0.080 L=270.0' S=0.1852 '/' Capacity=26.66 cfs Outflow=2.80 cfs 0.137 af
Reach 18R: SW4 Avg. Flow Depth=0.27' Max Vel=2.24 fps Inflow=1.18 cfs 0.053 af
n=0.080 L=280.0' S=0.1429 '/' Capacity=18.76 cfs Outflow=1.09 cfs 0.053 af
Reach 21 R: SW5 Avg. Flow Depth=0.38' Max Vel=1.65 fps Inflow=1.13 cfs 0.051 af
n=0.080 L=100.0' S=0.0600 '/' Capacity=10.59 cfs Outflow=1.07 cfs 0.051 af
Reach 27R: SW6 Avg. Flow Depth=0.82' Max Vel=2.29 fps Inflow=5.42 cfs 0.248 af
n=0.080 L=560.0' S=0.0536 '/' Capacity=7.84 cfs Outflow=4.50 cfs 0.248 af
Reach 29R: SW7 Avg. Flow Depth=0.42' Max Vel=1.61 fps Inflow=1.53 cfs 0.070 af
n=0.080 L=572.0' S=0.0524 '/' Capacity=9.54 cfs Outflow=1.16 cfs 0.070 af
Total Runoff Area = 5.791 ac Runoff Volume = 1.014 af Average Runoff Depth = 2.10"
100.00% Pervious = 5.791 ac 0.00% Impervious = 0.000 ac

Presnell Campground -ditches- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 7
Summary for Subcatchment 11 S: SW1 DA
Runoff = 1.69 cfs @ 11.97 hrs, Volume= 0.077 af, Depth= 2.05"
Routed to Reach 12R : SW1
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Type II 24-hr 10-year, 24-hour Rainfall=6.07"
Area (sf) CN Description
1,698 96 Gravel surface, HSG B
17,977 58 Woods/grass comb., Good, HSG B
19,675 61 Weighted Average
19,675 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 11S: SW1 DA
Hydrograph
/ 0 Runoff
- 1.69 cfs
Typ II 24-hr
10-year
24-Ihdurt Rainfall=6.07"
Runciff }4real=19,675 sf
Runoff Volume-O.977 of
Runoff Deph=2.05
Tc15.0t1nii
GN=6h
o
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -ditches- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 8
Summary for Subcatchment 13S: SW3 DA
Runoff = 3.00 cfs @ 11.97 hrs, Volume= 0.137 af, Depth= 2.05"
Routed to Reach 16R : SW3
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Type II 24-hr 10-year, 24-hour Rainfall=6.07"
Area (sf) CN Description
2,532 96 Gravel surface, HSG B
32,472 58 Woods/grass comb., Good, HSG B
35,004 61 Weighted Average
35,004 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 13S: SW3 DA
Hydrograph
•Runoff
3 y 3.00 cfs
I1 peII24-hr
I 1 o-ylear
24-hburt RainfaII06.O77
2 I 1p ff kre-a=315,Q04 f
Runoff Volume-0.137 of
Runoff Deph=2.05
Tc15.0 to i i
GN6h
0 ///////7���I//
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -ditches- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 9
Summary for Subcatchment 14S: SW2 DA
Runoff = 8.24 cfs @ 11.97 hrs, Volume= 0.377 af, Depth= 2.05"
Routed to Reach 15R : SW2
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Type II 24-hr 10-year, 24-hour Rainfall=6.07"
Area (sf) CN Description
6,321 96 Gravel surface, HSG B
89,723 58 Woods/grass comb., Good, HSG B
96,044 61 Weighted Average
96,044 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 14S: SW2 DA
Hydrograph
g 0 Runoff
8.24 cfs
J lT�pe l l 2�- r
7� ✓ o ear
6 244 ut -Rainfd1I 6.O7 ' -
Rungffi4real=916,044 sf
5- Rt n9ff V?ILme-0. 7T
R
4 unOffDep2.0V'
31 l l Tc-5.0-min -
- G11 61
1-
o
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -ditches- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 10
Summary for Subcatchment 19S: SW4 DA
Runoff = 1.18 cfs @ 11.96 hrs, Volume= 0.053 af, Depth= 2.49"
Routed to Reach 18R : SW4
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Type II 24-hr 10-year, 24-hour Rainfall=6.07"
Area (sf) CN Description
2,274 96 Gravel surface, HSG B
8,939 58 Woods/grass comb., Good, HSG B
11,213 66 Weighted Average
11,213 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 19S: SW4 DA
Hydrograph
/ I 0 Runoff
1.18 cfs
Typ II 24-hr
1
i�ye r
24-hdurt Rainfall=6.07"
Runciff }4rea=11,213 sf
RL n ff V?Iume-O.95�3 �f
unoff Deph=2.49
Tc15.0t1nii
GN=66
0 ,/////
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -ditches- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 11
Summary for Subcatchment 20S: SW5 DA
Runoff = 1.13 cfs @ 11.96 hrs, Volume= 0.051 af, Depth= 2.49"
Routed to Reach 21 R : SW5
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Type II 24-hr 10-year, 24-hour Rainfall=6.07"
Area (sf) CN Description
2,341 96 Gravel surface, HSG B
8,422 58 Woods/grass comb., Good, HSG B
10,763 66 Weighted Average
10,763 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 20S: SW5 DA
Hydrograph
/
0 Runoff
- 1.13 cfs
p 1124-h r
1 / I I I I- 1 7 7 17 T1 o-yeir
24-hdurt Rainfall=6.07"
Runciff }4rea=10,763 sf
RL n ff V?lume-O.951 �f
unoff Deph=2.49
Tc15.0t1nii
GN=66
0 ,/////
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -ditches- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 12
Summary for Subcatchment 26S: SW6 DA
Runoff = 5.42 cfs @ 11.97 hrs, Volume= 0.248 af, Depth= 2.05"
Routed to Reach 27R : SW6
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Type II 24-hr 10-year, 24-hour Rainfall=6.07"
Area (sf) CN Description
5,127 96 Gravel surface, HSG B
58,038 58 Woods/grass comb., Good, HSG B
63,165 61 Weighted Average
63,165 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 26S: SW6 DA
//�pI Hydrograph
6J •Runoff
5.42 cfs
Typ-II-2i-r -
5
- 1 o-ylear
4� [..7z ,
_L 24.heiuRainfalIo6.O7' -
Runoff }4rea=63,16� sf
3 3� 1 -R not V,Iume- .F-4� f -
° - Runoff De th=2.05"
LI - p
1 I I I 1
Tc5.0- -
2 1 1 GN6h
1
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -ditches- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 13
Summary for Subcatchment 28S: SW7 DA
Runoff = 1.53 cfs @ 11.96 hrs, Volume= 0.070 af, Depth= 2.23"
Routed to Reach 29R : SW7
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Type II 24-hr 10-year, 24-hour Rainfall=6.07"
Area (sf) CN Description
2,186 96 Gravel surface, HSG B
14,185 58 Woods/grass comb., Good, HSG B
16,371 63 Weighted Average
16,371 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 28S: SW7 DA
Hydrograph
/ 0 Runoff
- 1.53 cfs
Typ II 24-hr
✓ I 1 o-ylear
24-hburt RainfaII06.1077
I)--upff area=16, 711 f -
1
/ R�n9ff Volume-O.979 �f
Runoff Deph=2.23"
Tc15.0t1nii
GN=6i
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -ditches- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 14
Summary for Reach 12R: SW1
Inflow Area = 0.452 ac, 0.00% Impervious, Inflow Depth = 2.05" for 10-year, 24-hour event
Inflow = 1.69 cfs @ 11.97 hrs, Volume= 0.077 af
Outflow = 1.54 cfs @ 12.04 hrs, Volume= 0.077 af, Atten= 9%, Lag= 4.3 min
Routing by Stor-Ind+Trans method, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Max. Velocity= 2.35 fps, Min. Travel Time= 2.6 min
Avg. Velocity = 0.73 fps, Avg. Travel Time= 8.3 min
Peak Storage= 241 cf @ 12.00 hrs
Average Depth at Peak Storage= 0.33' , Surface Width= 2.99'
Bank-Full Depth= 1.00' Flow Area= 4.0 sf, Capacity= 17.62 cfs
1.00' x 1.00' deep channel, n= 0.080 Earth, long dense weeds
Side Slope Z-value= 3.0 '/' Top Width= 7.00'
Length= 365.0' Slope= 0.1260 '/'
Inlet Invert= 2,730.00', Outlet Invert= 2,684.00'
Reach 12R: SW1
Hydrograph
❑Inflow
1.69 cfs ❑Outflow
Inflow Area=0.452 ac
1.54 cfs
Avg. Flow Depth=0.33'
Max Vel=2.35 fps
n=0.080
1- // L=365.0'
LL S=0.1260 '/'
// Capacity=17.62 cfs
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -ditches- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 15
Summary for Reach 15R: SW2
Inflow Area = 2.205 ac, 0.00% Impervious, Inflow Depth = 2.05" for 10-year, 24-hour event
Inflow = 8.24 cfs @ 11.97 hrs, Volume= 0.377 af
Outflow = 6.76 cfs @ 12.09 hrs, Volume= 0.377 af, Atten= 18%, Lag= 7.5 min
Routing by Stor-Ind+Trans method, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Max. Velocity= 1.95 fps, Min. Travel Time= 4.8 min
Avg. Velocity = 0.51 fps, Avg. Travel Time= 18.5 min
Peak Storage= 1,963 cf @ 12.01 hrs
Average Depth at Peak Storage= 0.79' , Surface Width= 6.75'
Bank-Full Depth= 1.00' Flow Area= 5.0 sf, Capacity= 11.12 cfs
2.00' x 1.00' deep channel, n= 0.080 Earth, long dense weeds
Side Slope Z-value= 3.0 '/' Top Width= 8.00'
Length= 566.0' Slope= 0.0283 '/'
Inlet Invert= 2,700.00', Outlet Invert= 2,684.00'
Reach 15R: SW2
Hydrograph
9_ 8.24 cfs ❑inflow
❑Outflow
Inflow Area=2.205 ac
6.76 cfs
7
Avg. Flow Depth=0.79'
- 1 -- Max Vel=1 .95 fps
6 , 1 1 1 n=0.080
5= 1 1 L=566.0'
LL 4 / S=0.0283 '/'
3 // 1 1 + Capacity=11 .12 cfs
2
1
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -ditches- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 16
Summary for Reach 16R: SW3
Inflow Area = 0.804 ac, 0.00% Impervious, Inflow Depth = 2.05" for 10-year, 24-hour event
Inflow = 3.00 cfs @ 11.97 hrs, Volume= 0.137 af
Outflow = 2.80 cfs @ 12.01 hrs, Volume= 0.137 af, Atten= 7%, Lag= 2.5 min
Routing by Stor-Ind+Trans method, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Max. Velocity= 3.08 fps, Min. Travel Time= 1.5 min
Avg. Velocity = 0.89 fps, Avg. Travel Time= 5.0 min
Peak Storage= 253 cf @ 11.98 hrs
Average Depth at Peak Storage= 0.34' , Surface Width= 3.79'
Bank-Full Depth= 1.00' Flow Area= 4.8 sf, Capacity= 26.66 cfs
1.75' x 1.00' deep channel, n= 0.080 Earth, long dense weeds
Side Slope Z-value= 3.0 '/' Top Width= 7.75'
Length= 270.0' Slope= 0.1852 '/'
Inlet Invert= 2,770.00', Outlet Invert= 2,720.00'
Reach 16R: SW3
Hydrograph
❑Inflow
3.00 cfs ❑outflow
r I Inflow Area=0.804 ac
3 2.80 cfs
Avg. Flow Depth=0.34'
Max Vel=3.08 fps
n=0.080
2-
- L=270.0'
2 = S=0.1852 '/'
Capacity=26.66 cfs
r
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -ditches- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 17
Summary for Reach 18R: SW4
Inflow Area = 0.257 ac, 0.00% Impervious, Inflow Depth = 2.49" for 10-year, 24-hour event
Inflow = 1.18 cfs @ 11.96 hrs, Volume= 0.053 af
Outflow = 1.09 cfs @ 12.02 hrs, Volume= 0.053 af, Atten= 7%, Lag= 3.6 min
Routing by Stor-Ind+Trans method, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Max. Velocity= 2.24 fps, Min. Travel Time= 2.1 min
Avg. Velocity = 0.67 fps, Avg. Travel Time= 7.0 min
Peak Storage= 138 cf @ 11.99 hrs
Average Depth at Peak Storage= 0.27' , Surface Width= 2.63'
Bank-Full Depth= 1.00' Flow Area= 4.0 sf, Capacity= 18.76 cfs
1.00' x 1.00' deep channel, n= 0.080 Earth, long dense weeds
Side Slope Z-value= 3.0 '/' Top Width= 7.00'
Length= 280.0' Slope= 0.1429 '/'
Inlet Invert= 2,794.00', Outlet Invert= 2,754.00'
Reach 18R: SW4
Hydrograph
❑Inflow
1.18 cfs ❑Outflow
I' I Inflow Area=0.257 ac
1.09 cfs
Avg. Flow Depth=0.27'
Max Vel=2.24 fps
n=0.080
L=280.0'
LL - S=0.1429 '/'
Capacity=18.76 cfs
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -ditches- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 18
Summary for Reach 21 R: SW5
Inflow Area = 0.247 ac, 0.00% Impervious, Inflow Depth = 2.49" for 10-year, 24-hour event
Inflow = 1.13 cfs @ 11.96 hrs, Volume= 0.051 af
Outflow = 1.07 cfs @ 11.99 hrs, Volume= 0.051 af, Atten= 5%, Lag= 1.8 min
Routing by Stor-Ind+Trans method, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Max. Velocity= 1.65 fps, Min. Travel Time= 1.0 min
Avg. Velocity = 0.56 fps, Avg. Travel Time= 3.0 min
Peak Storage= 66 cf @ 11.98 hrs
Average Depth at Peak Storage= 0.38' , Surface Width= 2.88'
Bank-Full Depth= 1.00' Flow Area= 3.6 sf, Capacity= 10.59 cfs
0.60' x 1.00' deep channel, n= 0.080 Earth, long dense weeds
Side Slope Z-value= 3.0 '/' Top Width= 6.60'
Length= 100.0' Slope= 0.0600 '/'
Inlet Invert= 2,806.00', Outlet Invert= 2,800.00'
Reach 21R: SW5
Hydrograph
❑Inflow
1.13 cfs ❑outflow
1.07 cfs Inflow Area=0.247 ac
Avg. Flow Depth=0.38'
1
Max Vel=1 .65 fps
n=0.080
L=100.0'
LL S=0.0600 '/'
Capacity=10.59 cfs
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -ditches- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 19
Summary for Reach 27R: SW6
Inflow Area = 1.450 ac, 0.00% Impervious, Inflow Depth = 2.05" for 10-year, 24-hour event
Inflow = 5.42 cfs @ 11.97 hrs, Volume= 0.248 af
Outflow = 4.50 cfs @ 12.08 hrs, Volume= 0.248 af, Atten= 17%, Lag= 6.6 min
Routing by Stor-Ind+Trans method, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Max. Velocity= 2.29 fps, Min. Travel Time= 4.1 min
Avg. Velocity = 0.76 fps, Avg. Travel Time= 12.3 min
Peak Storage= 1,129 cf @ 12.01 hrs
Average Depth at Peak Storage= 0.82' , Surface Width= 4.92'
Bank-Full Depth= 1.00' Flow Area= 3.0 sf, Capacity= 7.84 cfs
0.00' x 1.00' deep channel, n= 0.080 Earth, long dense weeds
Side Slope Z-value= 3.0 '/' Top Width= 6.00'
Length= 560.0' Slope= 0.0536 '/'
Inlet Invert= 2,816.00', Outlet Invert= 2,786.00'
Reach 27R: SW6
Hydrograph
❑Inflow
6- 5.42 cfs ❑outflow`
Inflow Area=1 .450 ac
5 4.50 cfs Avg. Flow Depth=0.82'
Max VeI=2.29 fps
4 n=0.080
L=560.0'
3
2 014 Capacity=7.84 cfs
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Presnell Campground -ditches- HydroCAD Type 1124-hr 10-year, 24-hour Rainfall=6.07"
Prepared by ABH Printed 6/27/2023
HydroCAD® 10.20-2d s/n 12641 ©2021 HydroCAD Software Solutions LLC Page 20
Summary for Reach 29R: SW7
Inflow Area = 0.376 ac, 0.00% Impervious, Inflow Depth = 2.23" for 10-year, 24-hour event
Inflow = 1.53 cfs @ 11.96 hrs, Volume= 0.070 af
Outflow = 1.16 cfs @ 12.12 hrs, Volume= 0.070 af, Atten= 24%, Lag= 9.1 min
Routing by Stor-Ind+Trans method, Time Span= 0.00-120.00 hrs, dt= 0.04 hrs
Max. Velocity= 1.61 fps, Min. Travel Time= 5.9 min
Avg. Velocity = 0.53 fps, Avg. Travel Time= 18.0 min
Peak Storage= 422 cf @ 12.02 hrs
Average Depth at Peak Storage= 0.42' , Surface Width= 3.02'
Bank-Full Depth= 1.00' Flow Area= 3.5 sf, Capacity= 9.54 cfs
0.50' x 1.00' deep channel, n= 0.080 Earth, long dense weeds
Side Slope Z-value= 3.0 '/' Top Width= 6.50'
Length= 572.0' Slope= 0.0524 '/'
Inlet Invert= 2,816.00', Outlet Invert= 2,786.00'
Reach 29R: SW7
Hydrograph
/ ❑Inflow
1.53 cfs ❑outflow`
Inflow Area=0.376 ac
Avg. Flow Depth=0.42'
1.16 cfs Max Vel=1 .61 fps
n=0.080
L=572.0'
LL - S=0.0524 '/'
Capacity=9.54 cfs
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

SW 1 DETERMINING SHEAR STRESS
flow depth 0.33 Shear stress, T, at normal depth is computed for the lining by the following
channel gradient 12.60% equation:
shear stress 2.594592 T = yds
Bottom width 1 Td = Permissible shear stress
Channel Armoring NAG S200 9" Rip Rap where:
T=shear stress in Ib/ft2
SW 2 y=unit weight of water, 62.4 lb/ft'
flow depth 0.79 d=flow depth in ft
channel gradient 2.83% s=channel gradient in ft/ft
shear stress 1.3950768 Table 8.05g Permissible Unit Shear Stress,Td
Bottom width 2 Permissible Shear Stresses for Riprap and Temporary Lining Category Lining Type (lb/ft')
Channel Armoring Straw with net Liners
Temporary Woven Paper Net 0.15
Jute Net 0.45
SW 3 Fiberglass Roving:
Single 0.60
flow depth 0.34 Double 0.85
channel gradient 18.52% Straw with Net 1.45
shear stress 3.9292032 Curled Wood mat 1.55
Synthetic Mat 2.00
Bottom width 1.75
Table 8.05a
Channel Armoring NAG S200 12" Rip Rap Maximum Allowable Design Velocities'
for Vegetated Channels
SW 4 1 Typical Soil Grass Lining Permissible Velocity'
flow depth 0.27 Channel Slope Characteristics, for Established Grass
channel gradient 14.29% Application Lining(ftlsec)
shear stress 2.4075792 0-5°io Easily Erodible Bermudagrass 5.0
Non-plastic Tall fescue 4.5
Bottom width 1 (Sands&Silts) Bahragrass 4.5
Kentucky bluegrass 4.5
Channel Armoring NAG S200 9" Rip Rap Grass-legume mixture 3.5
Erosion Resistant Bermudagrass 6.0
SW 5 Plastic Tall fescue 5.5
(Clay mixes) Bahragrass 5.5
flow depth 0.38 Kentucky bluegrass 5.5
channel gradient 6.00% Grass legume mixture 4.5
shear stress 1.42272 5-10% Easily Erodible Bermudagrass 4.5
Non-plastic Tall fescue 4.0
Bottom width 0.6 (Sands&Slits) Bah!egress 4.0
Channel Armoring Straw with net Kentucky bluegrass 4.0
Grass-legume mixture 3.0
Erosion Resistant Bermudagrass 5.5
SW 6 Plastic Tall fescue 5.0
flow depth 0.82 (Clay mixes) Bahiagrass 5.0
p Kentucky bluegrass 5.0
channel gradient 5.36% Grass-legume mixture 3.5
shear stress 2.7426048 >10% Easily Erodible Bermudagrass 3.5
Bottom width 0 Non-plastic Tall fescue 2.5
(Sands 8,Silts) Bahiagrass 2.5
Channel Armoring NAG S200 9" Rip Rap Kentucky bluegrass 2.5
Erosion Resistant Bermudagrass 4.5
Plastic Tall fescue 3.5
SW 7 (Clay mixes) Bahragrass 3.5
flow depth 0.42 Kentucky bluegrass 3.5
channel gradient 5.24% Source. USDA-SCS Modified
shear stress 1.3732992
NOTE: 'Permissible Velocity based on 10-year storm peak runoff
Bottom width 0.5 soil erodibility based on resistance to soil movement from concentrated flowing water.
Channel Armoring Straw with net ,Beto re grass es established.permissible velocity is determined by the type of temporary lmer used

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TEMPORARY TEMPORARY
Typical Slope Channel Typical Slope Channel
Product Product
Longevity Applications Application Longevity Applications Application
Description (H:V) Thresholds Description (H:V) Thresholds
Acceleratedpoi,
Woven
photodegradable, biodegradable
Polypropylene top 45 days 4:1-3:1 1.55 psf/5.0 fps oppos
jute top and 2.35 psf/10.0
net,100%straw bottom net,100% 36 mo. 1:1 and Greater fps
DS75 fiber matrix coconut fiber
matrix
C125BN
Accelerated biodegwovenradable
pow
polypropylene 60 days 3:1-2:1 1.75 psf/6.0 fps 70coir top net,100
top 5 bottom net, coconut fiber 36 mo. 1:1 and Greater 2.35 psf/10.0
100%straw fiber matrix,woven fps
D5150 matrix biodegrdable jute
C700BN bottom net
photodegradable,Olt
PERMANENT
polypropylene top 12 months 4:1-3:1 1.55 psf/5.0 fps
net,100%straw ERONET
fiber matrix
575
UV-stable Unvegetated
photodegradable,lit
polypropylene 3.0 psf/9.0 fps
polypropylene (PP)top and Permanent 1:1
top 5 bottom net, 12 months 3:1-2:1 1.75 psf/6.0 fps bottom net, Vegetated
100%straw fiber PP fiber matrix 10 psf/16.0 fps
matrix
P300
5150 VMAX
UV-stable -
polypropylene
top net,70%10
UV-stable PP top Unvegetated
straw/30% A bottom nets,
coconut 24 months 2:1-1:1 2.0 psf/8.0 fps UV-stable PP 2.3 psf/8.5 fps
fiber matrix, crimped center Permanent 1:1 and Greater photodegradable net,100%straw Vegetated
polypropylene fiber matrix 8 psf/18
5C150 bottom net 5200
UV-stable PP
UV stable top E.-bottom
Ilk
polypropylene top nets,UV-stable Unvegetated
&bottom nets, 36 months 1:1 and Greater 2.25 psf/10.0 3.0 sf/9.5 f s
PP crimped
center net,70% P P
100%coconut fpsPermanent 1:1 and Greater
fiber matrix straw/30% Vegetated
10 psf/15.0 fps
5125 coconut fiber
5C250 matrix
BIONET
UV-stable PP
Leno woven top&bottom Unvegetated
biodegradable nets,UV-stable 3.2 psf/10.5 fps
jute top net, 12 months 4:1-3:1 1.6 psf/5.0 fps PP crimped Permanent 1:1 and Greater
100%straw fiber center net,100/ Vegetated
matrix coconut fiber 12 psf/20 fps
5758N C350 matrix
Woven UV-stable PP top Unvegetated
., '' biodegradable &bottom nets,
jute top and 12 months 3:1-2:1 1.85 psf/6.0 fps UV-stable PP 4.0 psf/12.5 fps
bottom net,100% crimped center Permanent 1:1 and Greater Vegetated
straw fiber matrix net,100%PP fiber g
5150BN matrix 14 psf/25 fps)
P550
Woven
biodegradable Vegetated
jute top and 100%UV-stable
- bottom net, 18 months 2:1-1:1 2.10 psf/8.0 fps PP monofilament TMax:15 psf/
70%straw/30% yarns,woven into Permanent 1:1 and Greater 25 fps
coconut fiber a 3-D structure TMax-3k:12 psf/
matrix TMAX/ 20 fps 3
SC1508N TMAX3k

Appendix E
Slope Matting Calcs

ElNORTH North American Green
AMERICAN 5401 St. Wendel-Cynthiana Rd.
Poseyville, Indiana 47633
GREEN Tel. [phone]
> Fax [phone]
w w wnagreen.com
ECM D Sv7.0
SLO FE ANALYSIS
Fill Slope
Country United States
State/Region North Carolina
City Asheville
Annual R Factor 1 75.00
Adjusted R Factor 1 03.25
Total Slope Length 6 5
Protection Type P erm anent
Protection Period 4
BeginningaMonth M y
Slope G iadient (H:1) 3
Soil Type Clay Loam
K Factor 0.21
Reach 1
Start: Oft End: 65 ft
Vegetation Type: 65-79%
M aterial A SL bare A SL rr£at M L bSre M L mat S oil Loss SF R emarks S taple / App
Tolerance Rate
SC150BN 0 .5 in 0 .0 in 0 .9 in 0 .0 in 0 .25 in 8 .226 S TABLE B
Estb. Veg. 1 .0 in 0 .0 in N /A in N /A in 0 .03 in 1 .546 S TABLE - -