Sudagai Dam

The Sudagai Dam rises 72 meters high and stretches 194 meters across the Tone River, creating a reservoir with a capacity of 28.5 million cubic meters.

The construction of Sudagai Dam started in 1952 and reached completion in 1955, marking a period of infrastructure development in post-war Gunma Prefecture.

The dam forms part of the Tone River upstream group, reflecting Japanese engineering practices in water management and hydroelectric power generation.

Visitors can access the dam site throughout the year to observe its structure and participate in recreational activities around the 130-hectare reservoir.

The dam's catchment area covers 310 square kilometers, supplying water for agriculture, industry, and maintaining river flow while generating 44.8 megawatts of hydroelectric power.

Location: Minakami

Inception: 1955

Height: 72 m

Part of: 利根川上流ダム群

GPS coordinates: 36.86830,139.06100

Latest update: March 11, 2025 12:22