Yanba Dam, Gravity dam in Naganohara, Japan
The Yanba Dam spans the Agatsuma River with a concrete structure reaching 131 meters in height and 291 meters in length, forming Lake Agatsuma.
Construction of the Yanba Dam began in 1952 with initial surveys, faced multiple delays and modifications, and finally reached completion in March 2020.
The Yanba Furusato-kan information center presents exhibitions about local traditions and offers regional products from Gunma Prefecture to visitors.
The dam operates multiple elevators connecting the upper level to the Agatsuma Valley, with guided tours available daily from 9:00 AM to 5:00 PM.
The facility produces specialized dam cards for collectors and serves green melon soda topped with soft ice cream, representing the colors of Lake Agatsuma.
Location: Naganohara
Inception: March 31, 2020
Height: 131 m
Part of: 利根川上流ダム群
Website: https://ktr.mlit.go.jp/tonedamu/tonedamu_index004-1.html
GPS coordinates: 36.55694,138.71417
Latest update: May 27, 2025 20:48
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