| Ohkawa Dam | |
| Name Official: | 大川ダム（再） |
| Location: | Kagoshima Prefecture, Japan |
| Dam Length: | 161.4m |
| Dam Height: | 49.2m |
| Construction Began: | 1983 |
| Opening: | 1986 |
| Res Capacity Total: | 2320 thousand cubic meters |
| Res Catchment: | 11.1 sq. km |
| Res Surface: | 19 hectares |
| Coordinates: | 28.3414°N 129.4836°W |
| Location Map: | Japan |
Ohkawa Dam is a rockfill dam located in Kagoshima Prefecture in Japan. The dam is used for irrigation and water supply. The catchment area of the dam is 11.1 km2. The surface area of the dam can reach about 19 ha of land when full and can store 2320 thousand cubic meters of water. The construction of the dam was started in 1983 and completed in 1986.[1]