Teshio River
| Teshio River 天塩川 | |
|---|---|
Teshio River in Shibetsu | |
| Native name | Teshio-gawa (Japanese) |
| Location | |
| Country | Japan |
| State | Hokkaido |
| Region | Rumoi, Kamikawa, Sōya |
| Municipalities | Bifuka, Horonobe, Kenbuchi, Nakagawa, Nayoro, Otoineppu, Shibetsu, Shimokawa, Teshio, Toyotomi, Wakkanai, Wassamu |
| Physical characteristics | |
| Source | Mount Teshio |
| • location | Shibetsu, Hokkaido, Japan |
| • coordinates | 43°57′52″N 142°52′51″E / 43.96444°N 142.88083°E |
| • elevation | 1,558 m (5,112 ft) |
| Mouth | Sea of Japan |
• location | Teshio and Horonobe, Hokkaido, Japan |
• coordinates | 44°52′44″N 141°44′18″E / 44.87889°N 141.73833°E |
• elevation | 0 m (0 ft) |
| Length | 256 km (159 mi) |
| Basin size | 5,590 km2 (2,160 sq mi) |
| Discharge | |
| • average | 110 m3/s (3,900 cu ft/s) |
The Teshio River (天塩川, Teshio-gawa) is a river in Hokkaido, Japan. At 256 kilometres (159 mi), it is the second-longest river on the island (after the Ishikari) and the fourth-longest in the country (after the Shinano, Tone, and Ishikari). A Class A river, the Teshio is the northernmost major river in Japan, and has been designated Hokkaidō Heritage. Matsuura Takeshirō is said to have come up with the name "Hokkaidō" during his exploration of the river's interior.