Research Article
Feb 1981
Overland Flow from Time-Distributed Rainfall
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VIEW THE REPLYPublication: Journal of the Hydraulics Division
Volume 107, Issue 2
Abstract
The influence of time-varying rainfall on overland flow is investigated. The kinematic wave equations for turbulent flow (across a plane, impermeable surface) are solved using a time-varying rainfall appropriate for thunderstorms. The peak discharge is shown to be a function of surface length, total precipitation, storm duration, and time to equilibrium for rainfall of constant intensity. For rainfall durations equal or less than the time-of-concentration, there is little difference between peak discharges estimated using time-varying rainfall and rainfall of constant intensity. For rainfall of long relative duration, the thunderstorm distribution gives much higher peak discharges.
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Published In
Journal of the Hydraulics Division
Volume 107 • Issue 2 • February 1981
Pages: 227 - 238
Copyright
© 1981 American Society of Civil Engineers.
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Published in print: Feb 1981
Published online: Feb 3, 2021
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Authors
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Allen T. Hjelmfelt Jr., M.ASCE
Hydr. Engr., United States Dept. of Agric., Science and Education Administration, Agric. Research North Central Region, Watershed Research Unit, 207 Business Loop East, Columbia, Mo. 65201
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.