The Chubetsu Dam (忠別ダム, Chūbetsu damu) is a dam in Biei, Hokkaidō, Japan.

Following World War II, modernization of Agriculture in Japan advanced rapidly and a steady source of water was required for the new farming techniques.

Hokkaido's population quickly grew and a stable water supply was needed.

For this reason, a survey of agricultural dams along the Chubetsu River was conducted[2] In 1977, the Chubetsu flood control, irrigation, water supply and Hydropower dam was planned.

After prolonged, the project was started in 1986 was finally completed in 2007 after some 29 years had passed.