FLOOD09746

• County: Statewide
• Basin: Statewide
• Title: Colorado Statewide Drainage Floodplain Management Criteria Manual
• Date: 8/1/2002
• Prepared By: CWCB & WRC Engineering Inc
• Floodplain - Doc Type: Educational/Technical/Reference Information

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COLORADO STATEWIDE
DRAINAGE AND FLOODPLAIN MANAGEMENT CRITERIA MANUAL

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2-hr Design 3-hr Design Area A~justed 3-hr Design
Time (min.) 2-hr Dist. % Storm Dist. Storm Dist. Adjustment
(inches) (inches) Factors Storm Dist. (inches)
0 0.00 0.00 0.00
5.0 1.0 0.02 0.02 1.00 0.02
10.0 3.0 0.07 0.07 1.00 0.07
15.0 4.6 0.10 0.10 1.00 0.10
20.0 8.0 0.18 0.18 1.00 0.18
25.0 14.0 0.31 0.31 0.90 0.28
30.0 25.0 0.55 0.55 0.90 0.50
35.0 14.0 0.31 0.31 0.90 0.28
40.0 8.0 0.18 0.18 1.00 0.18
45.0 6.2 0.14 0.14 1.00 0.14
50.0 5.0 0.11 0.11 1.00 0.11 .
55.0 4.0 0.09 0.09 1.00 0.09
60.0 4.0 0.09 0.09 1.00 0.09
65.0 4.0 0.09 0.09 1.00 0.09
70.0 2.0 0.04 0.04 1.00 0.04
75.0 2.0 0.04 0.04 1.00 0.04
80.0 1.2 0.03 0.03 1.00 0.03
85.0 1.2 0.03 0.03 1.00 0.03
90.0 1.2 0.03 0.03 1.00 0.03
95.0 1.2 0.03 0.03 1.00 0.03
100.0 1.2 0.03 0.03 1.00 0.03
105.0 1.2 0.03 0.03 1.00 0.03
110.0 1.2 0.03 0.03 1.00 0.03
115.0 1.2 0.03 0.03 1.00 0.03
120.0 1.2 0.03 0.03 1.00 0.03
125.0 0.02 1.00 0.02
130.0 0.02 1.00 0.02
135.0 0.02 1.00 0.02
140.0 0.02 1.00 0.02
145.0 0.02 1.00 0.02
150.0 . 0.02 1.00 0.02
155.0 0.02 1.00 0.02
160.0 0.02 1.00 0.02
165.0 0.02 1.00 0.02
170.0 0.Q2 1.00 0.02
175.0 0.02 1.00 0.02
180.0 0.02 1.00 0.02
Total 115.6 2.54 2.75 2.64

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VERSION: AUGUST 2002

REFERENCE:

TABLE CH5-T105
EXAMPLE 3: i00-YEAR RAINFALL
DISTRIBUTION RESULTS

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