Document Type : Research Paper
Authors
1
Department of water engineering, university of bu ali sina
2
Department of Water Engineering, Faculty of Agriculture, University of Zanjan , Zanjan, Iran
3
Department of Water Engineering, Faculty of Agriculture, Zanjan University, Zanjan, Iran
Abstract
Today, water shortages are a serious problem in most parts of the world. Since Iran is located in a dry and semi-arid climate, the water crisis is one of its most important issue. Therefore, attempts are necessary to improve water efficiency. The main role of irrigation and drainage networks is delivering and distributing irrigation water. Investigations on the performance of water conveyance, distribution, and delivery management in different irrigation networks show that the performance of most irrigation and drainage networks is inadequate. In this research, the effect of on-time and late operation on canal performance was examined using the E1R1 canal of the Dez network. To this end, different scenarios were specified, and the HEC-RAS and ICSS hydrodynamic models were employed to simulate the canal. The results revealed that the performance of the E1R1 canal improves remarkably as the operation is done on time rather than late. In different scenarios, the equity index increased from 0.4, 0.71, 0.32, and 0.78 to 0.07, 0.01, 0.09, and 0.01, respectively, ultimately reaching the desired value of zero. The same results were obtained for other performance indices, including adequacy, efficiency, and dependability. This shows the importance of on-time operation in improving canal performance.
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