Challenges of hydrological analysis for water resource development in semi-arid mountainous regions: case study in Iran |
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| Authors: | Shiro Hishinuma Kuniyoshi Takeuchi Jun Magome |
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| Institution: | 1. International Centre for Water Hazard and Risk Management, Public Works Research Institute, Tsukuba, Japan;2. National Graduate Institute for Policy Studies, Tokyo, Japandoc10132@grips.ac.jp;4. International Research Center for River Basin Environment (ICRE), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Kofu, Japan |
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| Abstract: | AbstractThis study modified the BTOPMC (Block-wise TOPMODEL with the Muskingum-Cunge routing method) distributed hydrological model to make it applicable to semi-arid regions by introducing an adjustment coefficient for infiltration capacity of the soil surface, and then applied it to two catchments above the dams in the Karun River basin, located in semi-arid mountain ranges in Iran. The application results indicated that the introduced modification improved the model performance for simulating flood peaks generated by infiltration excess overland runoff at a daily time scale. The modified BTOPMC was found to fulfil the need to reproduce important signatures of basin hydrology for water resource development, such as annual runoff, seasonal runoff, low flows and flood flows. However, it was also very clear that effective model use was significantly constrained by the scarcity of ground-gauged precipitation data. Considerable efforts to improve the precipitation data acquisition should precede water resource development planning.Editor D. Koutsoyiannis |
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| Keywords: | BTOPMC water resource development infiltration excess overland runoff snowpack and snowmelt data scarcity semi-arid Karun River basin Iran |
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