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 Johnson Co. Rain Depth-Duration Table Contact Us
 
Duration Rainfall Depth (inches) for Return Period
Hours Minutes 1 Year 2 Year 5 Year 10 Year 25 Year 50 Year 100 Year
0 5 0.39 0.45 0.54 0.60 0.70 0.78 0.85
0 6 0.44 0.52 0.62 0.70 0.81 0.90 0.98
0 7 0.50 0.58 0.70 0.79 0.91 1.01 1.11
0 8 0.55 0.64 0.78 0.87 1.01 1.12 1.23
0 9 0.60 0.70 0.84 0.95 1.10 1.22 1.34
0 10 0.64 0.75 0.91 1.02 1.18 1.31 1.44
0 11 0.68 0.80 0.96 1.08 1.26 1.40 1.53
0 12 0.71 0.84 1.02 1.14 1.33 1.47 1.62
0 13 0.75 0.88 1.06 1.20 1.39 1.55 1.70
0 14 0.78 0.92 1.11 1.25 1.46 1.62 1.78
0 15 0.81 0.95 1.15 1.30 1.52 1.68 1.85
0 16 0.83 0.98 1.20 1.35 1.57 1.75 1.92
0 17 0.86 1.01 1.24 1.40 1.63 1.81 1.99
0 18 0.88 1.04 1.27 1.44 1.68 1.87 2.06
0 19 0.90 1.07 1.31 1.48 1.73 1.93 2.12
0 20 0.92 1.09 1.34 1.52 1.78 1.98 2.18
0 21 0.94 1.12 1.38 1.56 1.83 2.04 2.25
0 22 0.95 1.14 1.41 1.60 1.88 2.09 2.30
0 23 0.97 1.16 1.44 1.64 1.92 2.14 2.36
0 24 0.98 1.18 1.47 1.67 1.96 2.19 2.42
Hours Minutes 1 Year 2 Year 5 Year 10 Year 25 Year 50 Year 100 Year
0 25 1.00 1.20 1.50 1.70 2.00 2.24 2.47
0 26 1.01 1.22 1.52 1.74 2.04 2.28 2.52
0 27 1.03 1.24 1.55 1.77 2.08 2.33 2.57
0 28 1.04 1.26 1.58 1.80 2.12 2.37 2.62
0 29 1.05 1.27 1.60 1.83 2.16 2.41 2.66
0 30 1.06 1.29 1.62 1.86 2.19 2.45 2.71
0 31 1.07 1.31 1.65 1.88 2.22 2.49 2.75
0 32 1.08 1.32 1.67 1.91 2.26 2.53 2.80
0 33 1.10 1.34 1.69 1.94 2.29 2.56 2.84
0 34 1.11 1.35 1.71 1.96 2.32 2.60 2.88
0 35 1.12 1.36 1.73 1.98 2.35 2.63 2.91
0 36 1.12 1.38 1.75 2.01 2.38 2.67 2.95
0 37 1.13 1.39 1.77 2.03 2.41 2.70 2.99
0 38 1.14 1.40 1.79 2.05 2.43 2.73 3.02
0 39 1.15 1.42 1.80 2.07 2.46 2.76 3.06
0 40 1.16 1.43 1.82 2.10 2.49 2.79 3.09
0 41 1.17 1.44 1.84 2.12 2.51 2.82 3.12
0 42 1.18 1.45 1.85 2.14 2.53 2.84 3.15
0 43 1.19 1.46 1.87 2.16 2.56 2.87 3.18
0 44 1.20 1.48 1.89 2.17 2.58 2.90 3.21
Hours Minutes 1 Year 2 Year 5 Year 10 Year 25 Year 50 Year 100 Year
0 45 1.21 1.49 1.90 2.19 2.60 2.92 3.24
0 46 1.21 1.50 1.92 2.21 2.63 2.95 3.27
0 47 1.22 1.51 1.93 2.23 2.65 2.97 3.30
0 48 1.23 1.52 1.95 2.25 2.67 3.00 3.32
0 49 1.24 1.53 1.96 2.26 2.69 3.02 3.35
0 50 1.25 1.54 1.98 2.28 2.71 3.04 3.38
0 51 1.26 1.55 1.99 2.30 2.73 3.07 3.40
0 52 1.27 1.56 2.01 2.31 2.75 3.09 3.42
0 53 1.28 1.58 2.02 2.33 2.77 3.11 3.45
0 54 1.28 1.59 2.03 2.35 2.79 3.13 3.47
0 55 1.29 1.60 2.05 2.36 2.81 3.15 3.49
0 56 1.30 1.61 2.06 2.38 2.82 3.17 3.52
0 57 1.31 1.62 2.07 2.39 2.84 3.19 3.54
0 58 1.32 1.63 2.09 2.41 2.86 3.21 3.56
0 59 1.33 1.64 2.10 2.42 2.88 3.23 3.58
1 0 1.34 1.65 2.11 2.43 2.89 3.25 3.60
1 5 1.38 1.70 2.18 2.50 2.97 3.33 3.70
1 10 1.43 1.75 2.23 2.57 3.04 3.41 3.78
1 15 1.48 1.80 2.29 2.63 3.11 3.49 3.86
1 20 1.52 1.85 2.34 2.69 3.18 3.56 3.94
Hours Minutes 1 Year 2 Year 5 Year 10 Year 25 Year 50 Year 100 Year
1 25 1.56 1.90 2.39 2.74 3.23 3.62 4.00
1 30 1.59 1.94 2.44 2.79 3.29 3.68 4.07
1 35 1.63 1.97 2.48 2.83 3.34 3.74 4.13
1 40 1.66 2.01 2.52 2.88 3.39 3.79 4.19
1 45 1.68 2.03 2.55 2.91 3.44 3.84 4.24
1 50 1.70 2.06 2.58 2.95 3.48 3.89 4.30
1 55 1.72 2.08 2.61 2.99 3.52 3.94 4.35
2 0 1.73 2.10 2.64 3.02 3.56 3.98 4.40
2 5 1.74 2.11 2.66 3.05 3.60 4.02 4.45
2 10 1.75 2.13 2.68 3.07 3.63 4.06 4.50
2 15 1.75 2.14 2.70 3.10 3.66 4.10 4.54
2 20 1.75 2.15 2.72 3.12 3.70 4.14 4.59
2 25 1.76 2.15 2.74 3.15 3.73 4.18 4.63
2 30 1.76 2.16 2.75 3.17 3.76 4.22 4.67
2 35 1.76 2.17 2.77 3.19 3.79 4.25 4.71
2 40 1.76 2.17 2.79 3.21 3.82 4.29 4.75
2 45 1.76 2.18 2.80 3.23 3.84 4.32 4.79
2 50 1.76 2.19 2.82 3.25 3.87 4.35 4.83
2 55 1.76 2.19 2.83 3.27 3.90 4.38 4.86
3 0 1.77 2.20 2.85 3.29 3.92 4.41 4.90
Hours Minutes 1 Year 2 Year 5 Year 10 Year 25 Year 50 Year 100 Year
3 15 1.78 2.23 2.89 3.35 4.00 4.50 5.00
3 30 1.80 2.26 2.94 3.41 4.07 4.58 5.09
3 45 1.83 2.29 2.98 3.46 4.13 4.66 5.18
4 0 1.86 2.33 3.03 3.51 4.20 4.73 5.26
4 15 1.89 2.36 3.07 3.57 4.26 4.80 5.33
4 30 1.92 2.40 3.12 3.62 4.32 4.87 5.41
4 45 1.95 2.43 3.16 3.67 4.38 4.93 5.48
5 0 1.98 2.47 3.21 3.71 4.43 4.99 5.55
5 15 2.01 2.50 3.25 3.76 4.49 5.05 5.61
5 30 2.03 2.54 3.29 3.81 4.54 5.11 5.68
5 45 2.06 2.57 3.33 3.85 4.59 5.17 5.74
6 0 2.09 2.60 3.36 3.89 4.64 5.22 5.80
6 30 2.14 2.66 3.44 3.98 4.74 5.33 5.92
7 0 2.18 2.71 3.51 4.05 4.83 5.43 6.03
7 30 2.22 2.76 3.57 4.13 4.92 5.53 6.14
8 0 2.26 2.81 3.63 4.20 5.00 5.63 6.25
8 30 2.29 2.85 3.69 4.27 5.08 5.72 6.35
9 0 2.33 2.89 3.74 4.33 5.16 5.80 6.44
9 30 2.36 2.93 3.79 4.39 5.23 5.88 6.53
10 0 2.39 2.97 3.84 4.44 5.29 5.96 6.61
Hours Minutes 1 Year 2 Year 5 Year 10 Year 25 Year 50 Year 100 Year
10 30 2.41 3.00 3.89 4.49 5.36 6.03 6.69
11 0 2.44 3.04 3.93 4.54 5.42 6.09 6.77
11 30 2.47 3.07 3.97 4.59 5.47 6.16 6.84
12 0 2.49 3.10 4.01 4.64 5.52 6.21 6.90
13 0 2.54 3.16 4.08 4.72 5.62 6.32 7.02
14 0 2.58 3.21 4.14 4.79 5.71 6.42 7.12
15 0 2.63 3.26 4.20 4.86 5.78 6.50 7.22
16 0 2.67 3.30 4.26 4.92 5.85 6.58 7.30
17 0 2.70 3.35 4.31 4.97 5.92 6.65 7.38
18 0 2.74 3.39 4.36 5.03 5.98 6.72 7.45
19 0 2.77 3.43 4.40 5.08 6.03 6.78 7.52
20 0 2.81 3.47 4.44 5.12 6.09 6.83 7.58
21 0 2.84 3.50 4.48 5.17 6.14 6.89 7.64
22 0 2.87 3.54 4.52 5.21 6.18 6.94 7.69
23 0 2.90 3.57 4.56 5.25 6.23 6.99 7.75
24 0 2.93 3.60 4.59 5.29 6.27 7.04 7.80
Depths courtesy Dr. Bruce McEnroe, University of Kansas
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