Runoff Estimation and Dam Selection Site in the Khur khur Watershed (KHW), Using (SCS-CN) Method and (GIS & RS) Techniques

The Soil Conservation Service Curve Number (SCS-CN) method was applied to calculate the runoff in the Khur khur watershed (KHW) based on (GIS and RS) techniques. The watershed (KHW) is located southeast of the Iraqi Kurdistan region and northeast Iraq in the foothill zone. The total area of (KHW) is (106.84) km², and in the fifth order, it meets the Sirwan river. The study aim is to speculate annual runoff volume and to select the dam site in order to harvest water from (KHW). The research reached specific basic results; the annual rate of water returns was (14408514.23 m³), and a suitable dam location was proposed that could be exploited from the volume of surface runoff, with a capacity approximately (14 million m³).

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