The Akigawa River (also, the Akikawa River, [1]) flows west of Tokyo Metropolitan Area. It is a major tributary of the Tama River, [2].
The Akigawa has a north fork and a south fork, [3], [4], but the river's source is in the Chichibu Tama Kai National Park, [5].
It flows through the towns of Akiruno and Hinohara, [6], and through Kanagawa and Tokyo Prefectures. [7].
The river's gorge is a popular recreation area.