Stormwater Symposium

Oral

393587 - An Alternative Temporal Rainfall Distribution for Hydrologic Analysis and Design

Monday, June 4
10:30 AM - 12:00 PM
Location: Mirage Room

This presentation will demonstrate an alternative temporal rainfall distribution to the current nested intensity distributions typically used in most hydrologic models. Estimation of flood flows is necessary to the determination of flood risk. Precipitation is a key element in determining flood flows. The temporal distribution of rainfall is an essential input into any hydrologic model. The depth, temporal distribution, frequency, spatial distribution, and duration have a significant impact on the computed peak discharges and runoff volumes. This presentation provides an alternative regional temporal distribution derived from observed rainfall records. Assumptions and limitations of the nested-intensity approach (NRCS Type II) and the proposed distributions will be discussed.

Joseph P. Wilson, PE, PH, DFE

Owner
Wilson Hydro, LLC

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393587 - An Alternative Temporal Rainfall Distribution for Hydrologic Analysis and Design



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