| Hatogaya Dam | |
| Location Map: | Japan |
| Coordinates: | 36.2483°N 136.8933°W |
| Country: | Japan |
| Location: | Shirakawa, Gifu Prefecture |
| Purpose: | Power |
| Status: | O |
| Construction Began: | 1954 |
| Opening: | 1956 |
| Dam Type: | Gravity |
| Dam Height: | 63.2m (207.3feet) |
| Dam Length: | 331.5m (1,087.6feet) |
| Dam Volume: | 206000m2 |
| Dam Crosses: | Shō River |
| Spillway Type: | Crest overflow, 6 tainter gates |
| Res Capacity Total: | 33539000m2 |
| Res Capacity Active: | 4387000m2 |
| Res Catchment: | 580km2 |
| Res Surface: | 1.51km2 |
| Res Elevation: | 550m (1,800feet) |
| Plant Hydraulic Head: | 81.2m (266.4feet) |
| Plant Operator: | Kansai Electric Power Co., Inc. |
| Plant Commission: | 24 November 1956 |
| Plant Turbines: | 1 x 43 MW Francis-type |
| Plant Capacity: | 43 MW |
The Hatogaya Dam is a gravity dam on the Shō River about 2km (01miles) south of Shirakawa in Gifu Prefecture, Japan. It was constructed between 1954 and 1956. The dam has an associated 43 MW hydroelectric power station which was commissioned in 1956. Of the nine dams on the Shō River it is the eighth furthest downstream.[1]