City of Morgan Hill Sewer System Master Plan 2017

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

Duration

(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

24‐hr

2.69

0.11

3.51

0.15

4.22

0.18

5.22

0.22

6.91

0.29

2/11/2016

Note:

1.  Source: NOAA Atlas 14 Volume 6 version 2 for station MORGAN HILL 2E.