Gajah Mungkur Dam
| Gajah Mungkur Reservoir | |
|---|---|
Gajah Mungkur dam | |
| Country | Indonesia |
| Location | Wonogiri Regency, Central Java, Indonesia |
| Status | Operational |
| Construction began | 1976 |
| Opening date | 1982 |
| Dam and spillways | |
| Type of dam | Embankment, rock-fill with watertight core |
| Impounds | Solo River |
| Height | 40 m (131 ft) |
| Length | 830 m (2,723 ft) |
| Reservoir | |
| Maximum length | 16 km (10 mi) |
| Maximum width | 7.6 km (5 mi) |
| Normal elevation | 162 m (531 ft) |
| Power Station | |
| Operator(s) | PT Indonesia Power |
| Commission date | 1991 |
| Installed capacity | 12.5 MW |
Gajah Mungkur Reservoir (Dam) (Indonesian: Waduk Gajah Mungkur) is a water reservoir located at Pokohkidul in the Wonogiri Regency, Central Java, of Indonesia. It was constructed by redirecting the Bengawan Solo River, the longest in the Java Islands, which originates from The Gajah Mungkur Mountain. The maximum inundation area of Gajah Mungkur Reservoir is 8,800 hectares (producing the largest lake in Java by surface area) and covers parts of the seven administrative districts (kecamatan) 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.