Sonohara Dam

Last updated December 05, 2025

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Sonohara Dam

Interactive map of Sonohara Dam
Location	Gunma Prefecture, Japan.
Coordinates	36°38′20″N139°10′31″E / 36.63889°N 139.17528°E / 36.63889; 139.17528
Construction began	1958
Opening date	1965
Dam and spillways
Type of dam	Gravity
Height	76.5 m (251 ft)
Length	127.6 m (419 ft)
Reservoir
Total capacity	21,310,000 m³ (753,000,000 cu ft)
Catchment area	607.6 km² (234.6 sq mi)
Surface area	91 hectares

Sonohara Dam is a dam in the Gunma Prefecture of Japan.

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Dams in Gunma Prefecture

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