Calibration Strategy for Urban Catchment Parameters
Publication: Journal of Hydraulic Engineering
Volume 118, Issue 11
Abstract
A simple and methodical strategy is presented for estimating the parameters of a catchment. The method makes use of rainfall‐runoff records to construct response surfaces of the peak flow in terms of eight calibration parameters. The eight calibration parameters are assumed to vary between certain physically meaningful limits and to be random and uniformly distributed between the limits. Experimental design techniques and the response surface methodology are used here. The response surfaces are fitted within the limits. Optimal values on the response surfaces that match the observed peak flows are then obtained using a probabilistic algorithm. The values obtained are optimal since at that point on the response surface the probability density is the highest. The average of the optimal sets obtained for various rainfall‐runoff records is an estimate of the catchment parameters. The estimated values are then verified on other storm runoff. The results obtained matched very well with the observed peak flow values.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 118 • Issue 11 • November 1992
Pages: 1550 - 1570
Copyright
Copyright © 1992 ASCE.
History
Published online: Nov 1, 1992
Published in print: Nov 1992
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