Water Science and Engineering 2010, 3(1) 1-13 DOI:   10.3882/j.issn.1674-2370.2010.01.001  ISSN: 1674-2370 CN: 32-1785/TV

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Keywords
GIS
SCS-CN method
surface runoff
West Bank catchments
arid and semi- arid regions
Authors
SAMEER -SHADEED
MOHAMMAD -ALMASRI
PubMed
Article by Sameer,.S
Article by Mohammad,.A

Application of GIS-based SCS-CN method in West Bank catchments, Palestine

Sameer SHADEED, Mohammad ALMASRI

Department of Civil Engineering, College of Engineering, An-Najah National University, P. O. Box 7,
Nablus, Palestine

Abstract

Among the most basic challenges of hydrology are the prediction and quantification of catchment surface runoff. The runoff curve number (CN) is a key factor in determining runoff in the SCS (Soil Conservation Service) based hydrologic modeling method. The traditional SCS-CN method for calculating the composite curve number is very tedious and consumes a major portion of the hydrologic modeling time. Therefore, geographic information systems (GIS) are now being used in combination with the SCS-CN method. This paper assesses the modeling of flow in West Bank catchments using the GIS-based SCS-CN method. The West Bank, Palestine, is characterized as an arid to semi-arid region with annual rainfall depths ranging between 100 mm in the vicinity of the Jordan River to 700 mm in the mountains extending across the central parts of the region. The estimated composite curve number for the entire West Bank is about 50 assuming dry conditions. This paper clearly demonstrates that the integration of GIS with the SCS-CN method provides a powerful tool for estimating runoff volumes in West Bank catchments, representing arid to semi-arid catchments of Palestine.

Keywords GIS   SCS-CN method   surface runoff   West Bank catchments   arid and semi- arid regions  
Received 2010-04-01 Revised  Online: 2010-04-02 
DOI: 10.3882/j.issn.1674-2370.2010.01.001
Fund:
This work was supported by the GLOWA-JR Project of the German Federal Ministry of Education and Research (BMBF).
Corresponding Authors: Sameer SHADEED
Email: sshadeed@najah.edu
About author:

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