Abstract
A three-parameter, nonlinear, generalized Muskingum routing model is solved by the direct integration method. A two-parameter, variable instantaneous unit hydrograph (IUH) model is obtained from the generalized Muskingum model by the S-hydrograph method. The ordinates of the variable IUH vary directly and the time elements inversely, with the intensity of effective rainfall raised to a power between zero and one. The method of differential correction is used to obtain estimates of the model parameters from complex storm events.
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