Document Type : Research Paper
M.Sc. Graduated in Hydraulic Structures, Department of Irrigation and Drainage Engineering, College of Aburaihan, University of Tehran
Assistant Professor, Department of Irrigation and Drainage Engineering, College of Aburaihan, University of Tehran
Professor, Department of Irrigation and Drainage Engineering, College of Aburaihan, University of Tehran
Researcher, Water and Water Economies office, Ministry of Energy, Tehran
Increasing the losses of water delivery and distribution regarding recent drought events makes necessity to upgrade the irrigation and drainage networks operation with higher transmission and distribution efficiency further than before. Providing solutions to improve water delivery and distribution and evaluating them requires the assessments of the plans from technical and economic views. Therefore, the present study, by giving non-structural and automation options, examines the efficiency of them by assessing the water delivery and distribution function and using the engineering economics under the inflow fluctuations conditions. The main canal of the Roodasht Network, which suffered from inflow fluctuations, was selected as a case study. The results of the simulation carried out by the ICSS hydrodynamic model, showed that the second non-structural strategies were efficient to improve the water delivery to Off-Takes by maximum 22% improvement of adequacy index relative to the present main canal operation. The automation method, by overcoming inflow fluctuations, supplied all the requirements of the crop areas and enhanced the adequacy index by a maximum of 85% than the current operation. Economically evaluation in the short-term of five years and long-term of ten years indicated that the automation method was more generate revenue than other methods. But the second non-structural option could produce a maximum profit in the standard scenario in the short and long periods 568 and 1446 billion Toman, respectively.