Joint Probability Calculation of Storm Depths

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

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


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: Probability | Storms | Joints | Frequency distribution | Probability distribution | Rainfall frequency | Flood frequency | Rivers and streams

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