SW6210703_Supplement-EZ Form_20210820 (2)

Additional swale information
Table 1.1 Swale design information based on the 10-year storm.
Swale
No.
Drainage
Area (ac)
Impervious
Area(ac)
Grassed
Area
(ac)
C
Q (cfs)
Slope
M
Vallow
(fps)
Vactual
(fps)
Flow
Depth
(ft)
21
0.28
0.09
0.19
0.50
0.89
2.00
n/a
1.39
0.39
22
0.24
0.11
0.13
0.60
1.15
2.50
n/a
1.62
0.42
23
0.31
0.10
0.22
0.50
0.83
2.50
n/a
1.46
0.35
24
5.27
1.22
4.05
0.45
9.15
0.15
n/a
1.20
1.52
25
0.29
0.09
0.20
0.50
0.77
2.50
n/a
1.46
0.35
26
0.12
0.05
0.06
0.60
0.56
5.00
n/a
1.76
0.26
27
0.49
0.15
0.34
0.50
1.54
1.80
n/a
1.52
0.50
28
0.48
0.15
0.33
0.50
1.51
2.50
n/a
1.72
2.50