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Table 3.4 Precipitation Depth‐Duration‐Frequency
Sewer System Master Plan
City of Morgan Hill
PRELIMINARY
2‐Year
5‐Year
10‐Year
25‐Year
100‐Year
(in)
(in/hr)
(in)
(in/hr)
(in)
(in/hr)
(in)
(in/hr)
(in)
(in/hr)
5‐min
0.15
1.80
0.20
2.40
0.23
2.76
0.29
3.48
0.37
4.44
10‐min
0.22
1.32
0.28
1.68
0.34
2.04
0.41
2.46
0.53
3.18
15‐min
0.26
1.04
0.34
1.36
0.41
1.64
0.50
2.00
0.65
2.60
30‐min
0.36
0.72
0.47
0.94
0.56
1.12
0.69
1.38
0.90
1.80
1‐hr
0.55
0.55
0.71
0.71
0.85
0.85
1.04
1.04
1.35
1.35
2‐hr
0.85
0.43
1.10
0.55
1.31
0.66
1.61
0.81
2.09
1.05
3‐hr
1.07
0.36
1.39
0.46
1.65
0.55
2.02
0.67
2.62
0.87
6‐hr
1.53
0.26
1.98
0.33
2.37
0.40
2.90
0.48
3.78
0.63
12‐hr
2.06
0.17
2.69
0.22
3.22
0.27
3.97
0.33
5.22
0.44
Duration
24‐hr
2.69
0.11
3.51
0.15
4.22
0.18
5.22
0.22
6.91
0.29
Note:
2/11/2016
1. Source: NOAA Atlas 14 Volume 6 version 2 for station MORGAN HILL 2E.