Iruma River
# Iruma River

The Iruma River (入間川, Iruma-gawa), is a river in Saitama Prefecture, Japan. It is 63 kilometres (39 mi) long and has a watershed of 721 square kilometres (278 sq mi). The river rises from Mount Ōmochi in Hannō, Saitama and flows to the Arakawa River at Kawagoe, Saitama.

