||Determination of Discharge-Frequency Relationships Utilizing Non-Linear Hydrographs and a Modified Rational Formula.
Smit, Robert L. ;
Larso, Kirke E. ;
Berr, Michael G. ;
||Kansas Water Resources Research Inst., Manhattan.
||Contrib-126; DI-14-31-0001-3283; OWRR-B-022-KAN; 05406,; B-022-KAN(1)
Flood forecasting ;
Computer programs ;
Surface water runoff ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
A new methodology for calculating flood frequency relationships is presented. Input data requirements are the normal watershed parameters of length, slope and area plus the point rainfall intensity-duration-frequency curve for the specified geographic location. Initial testing on 60 Kansas basins ranging in size from less than one square mile to more than 1,000 square miles gave results which compared favorably with other available techniques. The methodology provides for the determination of a frequency-equivalent storm having a uniform rainfall excess intensity. (Modified author abstract)