Lake Tōya (September 2013)
|Location||Iburi Subprefecture, Hokkaidō|
|Type||oligotrophic crater lake|
|Primary inflows||Ō River (大川 Ō-gawa), Sōbetsu River (ソウベツ 川 Sōbetsu-gawa)|
|Primary outflows||Sōbetsu River (壮瞥川 Sōbetsu-gawa)|
|Max. length||10 km (6.2 mi)|
|Max. width||9 km (5.6 mi)|
|Surface area||70.7 km2 (27.3 sq mi)|
|Average depth||117.0 m (383.9 ft)|
|Max. depth||180 m (590 ft) |
|Water volume||8.19 km3 (1.96 cu mi)|
|Shore length1||46 km (29 mi)|
|Surface elevation||84 m (276 ft)|
|Islands||Collectively known as Naka-jima: Ō-shima, Benten-jima, Kannon-jima, Manjū-jima|
|Settlements||Sōbetsu, Hokkaidō, Tōyako, Hokkaidō|
|1 Shore length is not a well-defined measure.|
Lake Tōya (洞爺湖 Tōya-ko) is a volcanic caldera lake in Shikotsu-Toya National Park, Abuta District, Hokkaidō, Japan. It is part of "Toya Caldera and Usu Volcano Global Geopark" which joins in Global Geoparks Network. The stratovolcano of Mount Usu lies on the southern rim of the caldera. The lake is nearly circular, being 10 kilometers in diameter from east-west and 9 kilometers from North-South. The town of Tōyako comprises most of the area surrounding the lake and the town of Sōbetsu is located on the eastern side.
Lake Tōya is said to be the northernmost lake in Japan that never ices (with competing claim by nearby Lake Shikotsu), and the second most transparent lake in Japan. Nakajima Island (not to be confused with another island of the same name in Lake Kussharo) is an island in the middle of the lake which houses the Tōya Lake Forest Museum.
Lake Tōya was called Kim'un-to (キムウン (kim'un) means "in the mountain" and ト (to) means "lake") by the Ainu. In the Meiji era, Japanese pioneers named the lake Tōya after the Ainu expression to ya, which means "lakeland".
In popular culture
- In the manga and anime Gintama, Lake Tōya (洞爺湖 Tōya-ko) is engraved on the Bokutō of the main character Gintoki Sakata (坂田 銀時, Sakata Gintoki).
- It is the model for Lake Kiriya in the anime Celestial Method.
- Lake Verity in Pokémon Diamond and Pearl and Pokémon Platinum is based on this lake as the Sinnoh region is a fictionalized version of Hokkaido.
Lake Toya's surroundings
Surrounding Lake Toya, there are numerous parks each with their own unique character and charm. There are also numerous walking trails along the lake to take a stroll in, such as the Waterfront Forest Lane (Takarada Nature Observation Trail) and the Nishiyama Sanroku Crater Trail. There are also onsen managed by the town of Toyako that offer a view of Lake Toya. There are also a number of hand and foothbaths nearby. Uniquely, large vending machines near the onsen offer spring water that can be taken to be used at home.
- Geographical Survey Institute map 25000:1 洞爺
- Bisignani, J.D. (December 1993). Taran March, ed. Japan Handbook (Second ed.). Chico, California: Moon Publications, Inc. p. 781. ISBN 0-918373-70-0.
- Batchelor, John. (1905) An Ainu-English-Japanese Dictionary (Second ed.). Tokyo: Methodist Publishing House
- "Lake Toya - Hokkaido Travel Guide | Planetyze". Planetyze. Retrieved 2018-01-29.
- "Usu". Global Volcanism Program. Smithsonian Institution.
- Geographical Survey Institute, last access 28 May 2008
- (in Japanese) Japanese Wikipedia article
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