Nonlinear Runoff Modeling: Parameter Identification
Publication: Journal of Hydraulic Engineering
Volume 109, Issue 6
Abstract
A nonlinear functional rainfall‐runoff model is applied to an urban watershed (Curotte‐Papineau, Montréal) and the results are compared with those from the ILLUDAS model. Simulations are performed using a 5 minute time interval in order to better define the characteristics of the hydrographs. Particular emphasis is placed on the identification of the most appropriate set of model parameters, namely the memory of the catchment (U) and the order of expansion of the first‐ and second‐order kernels and Parameter identification based on calibration results alone can lead to unpredictable verification (prediction) results; while calibration results improve with increasing values of and verification results do not exhibit the same consistency. Consequently, a two‐way calibration‐verification analysis is recommended for obtaining the best set of model parameters. Further, results of the nonlinear functional runoff model compare favorably with those of the ILLUDAS model.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 109 • Issue 6 • June 1983
Pages: 865 - 880
Copyright
Copyright © 1983 ASCE.
History
Published online: Jun 1, 1983
Published in print: Jun 1983
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