Koyama River

Overview

The Koyama River is a Class A river flowing through northern Saitama Prefecture, forming a tributary of the Tone River system. It runs approximately 36 kilometers in length and is sometimes referred to locally by its former name, the Minare River.

Highlights

• ●A tributary within the Tone River system, designated as a Class A river in Saitama Prefecture
• ●The river extends approximately 36 kilometers in length
• ●Its former name, the Minare River, is still sometimes used locally
• ●Its name is occasionally misread as "Oyamagawa," likely due to confusion with the place name Oyama in Tochigi Prefecture

History

The Koyama River has flowed through northern Saitama Prefecture as a tributary of the Tone River system. Its former name, the Minare River, remains in local use as a historical name for the river.

Map

36.2381, 139.3385 · Wikidata

Suggested itinerary

1. 1Head to the stretch of the Koyama River in northern Saitama Prefecture
2. 2Observe the flow of the river as a tributary of the Tone River system
3. 3Walk along the riverbank, noting traces of its former name, the Minare River
4. 4Follow a section of the river's roughly 36-kilometer course

Did you know?

💡 The Koyama River's name is sometimes misread as "Oyamagawa," though its correct reading is "Koyamagawa."

Nearby spots