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Kōsaka Dam

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Dam in Saku, Nagano
Kōsaka Dam
CountryJapan
LocationSaku, Nagano
Coordinates36°15′54″N 138°32′55″E / 36.26500°N 138.54861°E / 36.26500; 138.54861
PurposeFlood control
StatusOperational
Construction began1969 (1969)
Opening date1972 (1972)
Construction cost1,222,000,000 JPY
Dam and spillways
Type of damEmbankment dam
ImpoundsKosaka river
Height (thalweg)38.5 m
Length184.0 m
Dam volume334,000 m
Reservoir
CreatesLake Kōsaka Dam
Total capacity1,050,000 m
Active capacity870,000 m
Catchment area14 km
Surface area11 ha

Kosaka Dam (Japanese: 香坂ダム) is an embankment dam on the Kosaka river in the Saku, Nagano, Japan, completed in 1972. The primary purpose is flood control, because villages in the Kosaka River basin suffered heavy damage from the floods.

  • Lake Kōsaka Dam Lake Kōsaka Dam
  • Kōsaka Dam office and spillway Kōsaka Dam office and spillway

References

  1. 香坂ダム (in Japanese). Retrieved 2016-09-15.
Dams in Nagano Prefecture


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