Runoff Probability, Storm Depth, and Curve Numbers
Publication: Journal of Irrigation and Drainage Engineering
Volume 111, Issue 4
Abstract
Using existing antecedent moisture condition (AMC) Curve Number relationships, a general expression of rainfall‐runoff is developed for AMC I and AMC III. The probability distribution of event runoff exceeding zero is found to be lognormal. Relative storm size is then proposed to be defined on the ratio P/S, where a “large” storm has when 90% of all rainstorms will create runoff. Consequent problems arising in the definition of CN from rainfall‐runoff data are discussed.
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Published In
Journal of Irrigation and Drainage Engineering
Volume 111 • Issue 4 • December 1985
Pages: 330 - 340
Copyright
Copyright © 1985 ASCE.
History
Published online: Dec 1, 1985
Published in print: Dec 1985
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