Estimating the Parameters of the Curve Number Model
Publication: Journal of Hydrologic Engineering
Volume 22, Issue 6
Abstract
A methodology is presented for combining the conventional Natural Resources Conservation Service (NRCS) 24-h rainfall distributions with Horton and Green–Ampt infiltration processes to estimate the curve number (CN) and initial abstraction () parameters of the NRCS curve number model. It is shown that the rainfall distribution, rainfall depth, and infiltration characteristics all affect CN and , and the influence of these factors on CN and under selected conditions are quantified. The results presented in this paper are particularly applicable to cases in which the dominant abstraction mechanism is infiltration.
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Published In
Journal of Hydrologic Engineering
Volume 22 • Issue 6 • June 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Nov 23, 2015
Accepted: Oct 19, 2016
Published ahead of print: Feb 6, 2017
Published online: Feb 7, 2017
Published in print: Jun 1, 2017
Discussion open until: Jul 7, 2017
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