Ōmachi Dam

Dam in Ōmachi
36°30′53″N 137°46′53″E / 36.51472°N 137.78139°E / 36.51472; 137.78139StatusOperationalConstruction began1972Opening date1985Owner(s)TEPCODam and spillwaysType of damGravityImpoundsTakase RiverHeight107 m (351 ft)Length338 m (1,109 ft)[1]Dam volume766,000 m3 (1,001,890 cu yd)Spillways2Spillway type4 x radial gatesSpillway capacity1,910 m3/s (67,451 cu ft/s)ReservoirTotal capacity33,900,000 m3 (27,483 acre⋅ft)Active capacity28,900,000 m3 (23,430 acre⋅ft)Surface area110 ha (272 acres)Normal elevation898 m (2,946 ft)[2]Power StationCommission dateApril 1985Hydraulic head63.4 m (208 ft)Turbines1 x 13 MW Francis-typeInstalled capacity13 MW

The Ōmachi Dam is a concrete gravity dam on the Takase River [ja] just west of Ōmachi in Nagano Prefecture, Japan. Construction of the dam began in 1975 and it was completed in 1985. The primary purpose of the dam is water supply and it also supports a 13 MW hydroelectric power station.[3] It is owned by TEPCO.[1]

See also

  • flagJapan portal
  • iconWater portal
  • iconRenewable energy portal

References

  1. ^ a b "Omachi Dam". Japan Dam Handbook. Retrieved 8 August 2011.
  2. ^ "Omachi Dam". DamMania. 28 April 2003. Retrieved 8 August 2011.
  3. ^ "Tokyo Electric Power Plant Omachi" (in Japanese). Suiryoku.com. Retrieved 8 August 2011.
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