FLOOD05148

• County: Statewide
• Community: State of Colorado
• Basin: Statewide
• Title: Urban Storm Drainage Criteria Manual
• Date: 5/1/1984
• Prepared By: UDFCD
• Floodplain - Doc Type: Flood Mitigation/Flood Warning/Watershed Restoration

DRAINAGE ,CRITERIA MANUAL RAINFALL
. Table 5-2
Calculating Intensity - Duration
Duration (min.): 5 10 15 30 60
Table 2-1 Factor: 0.29 0.45 0.57 0.79 1.0
2-Year:
One hour depth(in.): 0.95 0.95 0.95 0.95 0.95
Depth at Duration: 0.28 0.43 0.54 0.75 0.95
Intensity (in/hr): 3.3 2.6 2.2 1.50 0.95
10-Year:
One hour depth(in.): 1.60 1.60 1.60 1.60 1.60
Depth at Duration: 0.46 0.72 .91 1.26 1.60
Intensity (in/hr): 5.6 4.3 3.6 2.5 1.60
100-Year:
. One hour depth(in.): 2.60 2.60 2.60 2.60 2.60
Depth at Duration: 0.75 1.17 1.48 2.05 2.60
Intensity (in/hr): 9.1 7.0 5.9 4.1 2.60

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