Title

Comparison of design storm concepts using continuous simulation with short duration storms

Authors

Authors

F. N. Nnadi; F. X. Kline; H. L. Wray;M. P. Wanielista

Comments

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Abbreviated Journal Title

J. Am. Water Resour. Assoc.

Keywords

continuous simulation; design storm; infiltration; peak flow rate; rainfall distributions; short duration storms; return period; runoff; Engineering, Environmental; Geosciences, Multidisciplinary; Water; Resources

Abstract

The objectives of this paper were to test the ability of various design storm distributions to simulate the actual rainfall pattern and to compare the runoff rates used in the design of stormwater management devices in the State of Florida using continuous simulation approach. The analyses were performed for four gaged stations to evaluate the applicability of design storm distributions in different parts of the State of Florida. The approach used in this study compared the peak runoff rates from design storms based on the various distributions to those that would result from actual rainfall events. A series of continuous runoff rates were developed through the use of actual fifteen-minute recorded rainfall data, Horton type infiltration decay and recovery rate, and a continuous simulation model. The runoff rates were analyzed using frequency distributions to obtain peak runoff rates associated with different return periods based on the assumption that the continuous simulation approach closely predicts the actual runoff rates from the gaged stations. The results show that the behavior of the design storm distributions varies for different watershed characteristics in different parts of the state. The study also suggests that in general the Florida Department of Transportation and the Suwanne River Water Management (FDOT/SRWMD) distributions appeared to agree with the continuous simulation results.

Journal Title

Journal of the American Water Resources Association

Volume

35

Issue/Number

1

Publication Date

1-1-1999

Document Type

Article

Language

English

First Page

61

Last Page

72

WOS Identifier

WOS:000079345200005

ISSN

1093-474X

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