 The maximum inundation area of Gajah Mungkur Reservoir is 8,800 hectares and covers the seven subdistricts of Wonogiri, Ngadirojo, Nguntoronadi, Baturetno, Giriwoyo, Eromoko, and Wuryantoro.The reservoir is used for irrigation, hydroelectric power, source of drinking water, tourism, aquaculture, and fisheries.Various fish may be found in the water, including parrotfish, wader pari, tawes, and patin jambal.