SW4210901_Design Calculations_20220105

Time of Concentration
Swale
Length (LF)
Upstream
Elev.
Downstream
Elev.
Slope
Kirpich TO (min)
17
323.55
652.00
645.00
2.16%
2.92
18
429.70
660.54
650.00
2.45%
3.46
24
216.28
650.00
643.30
3.10%
1.87
25
182.98
662.94
659.90
1.66%
2.09
26
237.28
662.98
654.00
3.78%
1.86
27
242.52
654.00
641.00
5.36%
1.65
28
474.00
649.00
623.00
5.49%
2.74
29
257.52
636.50
622.50
5.44%
1.72
32
192.62
652.00
641.00
5.71%
1.35
33
266.36
663.00
652.00
4.13%
1.96
34
98.54
663.00
662.00
1.01%
1.57
35
289.53
654.00
641.50
4.32%
2.06
36
231.45
650.00
644.50
2.38%
2.18
37
154.75
650.50
644.50
3.88%
1.32
38
104.58
650.50
646.30
4.02%
0.97
39
123.10
650.30
645.75
3.70%
1.13
40
104.20
650.50
645.75
4.56%
0.92
41
155.30
650.50
644.50
3.86%
1.33
42
292.04
650.20
644.50
1.95%
2.81
43
362.76
655.00
643.70
3.12%
2.77
44
808.44
662.50
639.40
2.86%
5.31
45
350.92
650.00
644.50
1.57%
3.52
46
123.00
650.30
645.75
3.70%
1.13
47
704.77
646.50
613.85
4.63%
3.97
*Time of concentration values calculated using the Kirpich Method