Volume 10, Issue 3 (2008)                   JAST 2008, 10(3): 285-292 | Back to browse issues page

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Najafi Shahri M R, Behbahani S M R. Conceptual Watershed Modeling for Direct Runoff Computations. JAST. 10 (3) :285-292
URL: http://jast.modares.ac.ir/article-23-3198-en.html
1- Department of Irrigation and Drainage Engineering, Faculty of Agricultural Engineering, College of Aboureihan, University of Tehran, Tehran, Islamic Republic of Iran
Abstract:   (4795 Views)
This paper describes a simple, physically-based conceptual model utilizing watershed drainage characteristics for rainfall-runoff simulation. This conceptual physiographic model is essentially based on the work of Najafi (2003), which has led to a model compris-ing the main tributary subwatersheds and a single main channel subwatershed. The Ki-nematic Wave (KW) theory is used to describe flow over the subwatershed plans. The dy-namic wave theory is applied for channel flow computations to compute the watershed re-sponses at the outlet. The proposed model was tested on a natural watershed where the results could be compared with the results obtained by Najafi (2003). The results show the proposed physiographic model has advantages over the former in terms of mathematical formulation and input data preparation as well as computation time requirements.
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Subject: Irrigation and Drainage
Received: 2010/01/28 | Accepted: 2010/01/28 | Published: 2010/01/28

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