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

作     者：Sameer SHADEED Mohammad ALMASRI 

作者机构：Department of Civil EngineeringCollege of EngineeringAn-Najah National University 

出 版 物：《Water Science and Engineering》 (水科学与水工程（英文版）)

年 卷 期：2010年第3卷第1期

页      面：1-13页

核心收录：

学科分类：08[工学] 081501[工学-水文学及水资源] 0815[工学-水利工程] 

基　　金：supported by the GLOWA-JR Project of the German Federal Ministry of Education and Research (BMBF) 

主　　题：GIS SCS-CN method surface runoff West Bank catchments arid and semiarid regions 

摘      要：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 （G/S） 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.