Gen River

The Gen River (亘免; gen-miyu) is a river located in the north-east of Chiha Prefecture. It flows directly past the city of Ashiyumi, and is considered to be the twin of the larger Tao River. Its source lies in the lower reaches of the Ikumo Mountains, descending from the Hirayama Waterfall. The Gen Bridge crosses the river at its middle mark, a few miles from Ashiyumi.

The river gets its name from its characteristically clear, fast-flowing water, which has been likened to molten metal (the character 亘 means "silver").

Historically, the river has supplied the surrounding area with fertile, well-watered land and an abundance of freshwater fish. It also contributed largely to the growth of the nearby city Ashiyumi.

In 1998, the river became widely known for being the setting of a pivotal scene in the famous thriller film Where The Water's Deep.