| Akao Dam | |
| Location Map: | Japan |
| Coordinates: | 36.3761°N 136.8705°W |
| Location: | Nishiakao, Toyama Prefecture, Japan |
| Purpose: | Power |
| Status: | O |
| Construction Began: | 1939 |
| Opening: | 1942 |
| Dam Type: | Gravity |
| Dam Height: | 29.2m (95.8feet) |
| Dam Length: | 153.4m (503.3feet) |
| Dam Volume: | 28000m2 |
| Dam Crosses: | Shō River |
| Spillway Type: | Crest overflow, 5 roller gates |
| Res Capacity Total: | 1465000m2 |
| Res Capacity Active: | 749000m2 |
| Res Catchment: | 778.1km2 |
| Res Surface: | 0.26km2 |
| Res Elevation: | 336.7m (1,104.7feet) |
| Plant Operator: | Kansai Electric Power Co., Inc. |
| Plant Commission: | 26 October 1978 |
| Plant Turbines: | 1 x 34 MW Kaplan-type |
| Plant Capacity: | 34 MW |
| Plant Hydraulic Head: | 17.4m (57.1feet) |
The Akao Dam is a gravity dam on the Shō River in Nishiakao village about 18km (11miles) south of Nanto in Toyama Prefecture, Japan. It was constructed between 1974 and 1978. The dam has an associated 34 MW hydroelectric power station which was commissioned in 1978. Of the nine dams on the Shō River it is the fifth furthest downstream.[1]