Ueno Dam

Ueno Dam (上野ダム) is a concrete gravity dam in the Gunma Prefecture of Japan. The dam serves as the lower reservoir of the Kannagawa Hydropower Plant. Because of the dams remote location deep in the hillside, no houses were submerged.

Lake Okukanna
Ueno Dam
LocationUeno, Gunma, Japan
Coordinates36.05173°N 138.705056°E / 36.05173; 138.705056
Construction began1997
Opening date2004
Dam and spillways
ImpoundsKanna River
Height120 m
Length350 m
Reservoir
Total capacity18,400,000 m³
Catchment area31.2 km²
Surface area56 hectares


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