| Iruma River | |
|---|---|
|
Iruma River in Hannō, Saitama
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| Native name | Japanese: 入間川 |
| Country | Japan |
| Basin features | |
| Main source | Mount Hannō in Hannō, Saitama 1,197 m (3,927 ft) |
| River mouth | Arakawa River |
| Basin size | 721 km2 (278 sq mi) |
| Physical characteristics | |
| Length | 63 km (39 mi) |
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.
35°54′35″N 139°32′43″E / 35.90982°N 139.545139°ECoordinates: 35°54′35″N 139°32′43″E / 35.90982°N 139.545139°E (mouth, flows into Arakawa River)