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Publication Abstract

Frequency Relations for Storm Rainfall in Illinois Huff, Floyd A., and James C. Neill, 1959  Illinois State Water Survey, Champaign, IL,  ISWS B-46    Full Text Available
Considerable information on precipitation frequencies for periods of 5 minutes to 24 hours has been provided by Yarnell(1) and the U. S. Weather Bureau.(2) However, longer periods of precipitation which are of importance in agriculture, water supply replenishment, and hydrologic design have not been analyzed in detail for Illinois. Consequently, analyses were performed to determine the recurrence interval of heavy precipitation encompassing periods of 1 to 10 days. An early phase of the study was committed to a comparison of several commonly used approaches to frequency analysis of maximum data, in an effort to determine the most representative statistical distribution for use with the Illinois data.

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