hydropower production is common in the upper part of the basin and cascades of dams form big reservoirs many small dams arc used for irrigation purposes and fishbreeding in turkey seven dams and one regulator are under operation on the ergenc river and its tributaries serving irrigation flood control and some drinking water supply purposes of drinking water of edime and kirldareli cities is supplied from two reservoirs suloglu and armagan there arc also small dams located on several tributaries used for irrigation