Sasogawa Dam
| Sasogawa Dam | |
|---|---|
 | |
  Location of Sasogawa Dam in Fukui Prefecture  Sasogawa Dam (Japan) | |
| Location | Ōno, Fukui Prefecture, Japan |
| Coordinates | 35°50′35″N 136°32′48″E / 35.84306°N 136.54667°ECoordinates: 35°50′35″N 136°32′48″E / 35.84306°N 136.54667°E |
| Purpose | multi-purpose |
| Construction began | 1952 |
| Opening date | 1957 |
| Dam and spillways | |
| Height | 76 m |
| Length | 215 m |
| Reservoir | |
| Total capacity | 58,806,000 m³ |
| Catchment area | 70.7 km² |
| Surface area | 234 hectares |
| Nakajima Power Station | |
| Installed capacity | 18,000kW |
Sasogawa Dam (笹生川ダム Sasogawa damu) is a multi-purpose dam located in the city of Ōno in Fukui Prefecture. Japan[1]. The dam and its reservoir are located within Okuetsu Kōgen Prefectural Natural Park.
Sasogawa Dam was built as part of the Managawa River Comprehensive Development Project, for the development of the Kuzuryū River basin in Fukui prefecture from 1950, for flood control, water for agriculture and also, to supply the cities of Fukui and Ōno with water and hydroelectric power generation. Construction on the dam began in 1952 and was completed in 1957. The dam is gravity type concrete dam with a height of 76.0 m.
During torrential rains in 1965, the capacity of Sasogawa Dan was greatly overwhelmed, and considerable damage occurred to the dam and to downstream settlements. Improvements were made to the dam from 1972 to 1977 increase its capacity to handle torrential rains by construction of a flood discharge tunnel on the right bank of the dam and improvement in communication and observation facilities for emergency situations. Due to these improvements, torrential rains in 2004 did not cause any further damage.
The associated Nakajima Power Station was initially operated by Fukui Prefecture, but in 2010 was transferred to Hokuriku Electric Power Company.
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