The Iruma River (入間川, Iruma-gawa), is a river in Saitama Prefecture, Japan.[1][2] 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.

Iruma River
Iruma River in Hannō, Saitama
Map
Native name入間川 (Japanese)
Location
CountryJapan
Physical characteristics
Source 
 • locationMount Hannō in Hannō, Saitama
 • elevation1,197 m (3,927 ft)
Mouth 
 • location
Arakawa River
Length63 km (39 mi)
Basin size721 km2 (278 sq mi)

References

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  1. ^ Group, Sasai Fossil Forest Research (1984). "Geology of the Sasai Fossil Forest in the Bedrock of Iruma River, Saitama Prefecture, Japan". Bull Saitama Mus Nat. 2. {{cite journal}}: |last= has generic name (help)
  2. ^ "災害・防災情報:令和元年台風第19号による被害状況等について - 国土交通省". www.mlit.go.jp. Retrieved 2022-11-29.
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35°54′35″N 139°32′43″E / 35.90982°N 139.545139°E / 35.90982; 139.545139