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Probabilistic Characteristics of Elapsed Time Between Rainfalls

by Ben Chie Yen, Univ of Illinois at Urbana-Champaign, Urbana, United States,
Robert Riggins, Univ of Illinois at Urbana-Champaign, Urbana, United States,
James W. Ellerbroek, III, Univ of Illinois at Urbana-Champaign, Urbana, United States,



Document Type: Proceeding Paper

Part of: Management of Irrigation and Drainage Systems: Integrated Perspectives

Abstract:

The elapsed time between rainfalls is analyzed statistically using the hourly rain data at two locations: the flat-plain at Urbana, Illinois and the northwestern Appalachian foothills near Coshocton, Ohio. The probability density function (pdf) of the elapsed time is obtained. It is found that the two-parameter gamma distribution provides a much better fit of the data than the exponential distribution.

Subject Headings: Probability | Rainfall | Probability distribution | Data analysis | Stormwater management | Statistics | Parameters (statistics) | United States | Illinois | Appalachian | Ohio

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