Corresponding Author

Ali Khoshnaw

Document Type

Research Article


The present research has managed and operated the Bekhme reservoir by using Mat Lab software which was developed rapidly during my Master study in UNESCO IHE. The Mat Lab can model demand and supply and build different scenarios that may occur, and it is supported by Geographic Information System (GIS) layers, all climatic data, hydrologic data and any other data available from previous studies and models to give a clear view about operation dam. A stochastic dynamic programming (SDP) model is developed and applied to determine the optimal operating policy of the Greater Zab River Basin (GZRB) system in the Erbil and Duhok Governorates (Iraq). The Bekhme dam and its 17 km3 reservoir which is still the work stopped. This work re-assesses the performance of the Bekhme reservoir by simulating SDP-derived optimal monthly release policies over a planning period of 47 year using historical flows. This optimization-simulation scheme is implemented for different scenarios of downstream water demands for irrigation, water supply, industrial and environmental flows. In addition, the impacts on total hydropower production of Bekhme dam are studied and compared with official figures that can be found in the planning study dating back from the 80ies. The results show that the optimal average annual hydropower generation can be as large as 6332.5 GWh, while the official expected production is 4709 GWh. Sources of different are the release policy and main operation objectives. Base Case energy production increased by (24 %) compare to the official plan, but also it cannot cover energy demands in the area.


Optimization and Simulation Model, Bekhme Reservoir Operation, GZRB Management, Downstream Water Release, Hydropower Generation

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