Joint Probability Calculation of Storm Depths

by Rex G. Wescott, US Nuclear Regulatory Commission, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

A methodology is presented to estimate exceedance probabilities of rainfall depths over large areas using joint probability. The joint probability estimate combines the frequency distribution of a relatively small area 'index depth' with the probability distribution of rainfall depth-area ratios determined from larger storms. The procedure is based on the assumption that the ratios and their variation may be far more transposable to a given region or basin than the actual recorded large area depths.



Subject Headings: Frequency distribution | Rainfall | Storms | Floods | Probability | Probability distribution | Rivers and streams | Basins

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