| Lake Tōya 洞爺湖 |
|
|---|---|
| Toyako (November 2007) | |
| Location | Iburi Subprefecture, Hokkaidō |
| Lake 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) |
| Basin countries | Japan |
| 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) [1] |
| Water volume | 8.19 km3 (1.96 cu mi) |
| Shore length1 | 46 km (29 mi) [2] |
| Surface elevation | 84 m (276 ft) |
| Frozen | never |
| Islands | Nakano-shima |
| Settlements | Sōbetsu, Hokkaidō, Tōyako, Hokkaidō |
| References | [1][2] |
| 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. 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 lakes biggest town, Tōyako Onsen (洞爺湖温泉) is located on its western shore. The town Tōyako is located on the other side of the lake.
Lake Tōya is said to be the northernmost lake in Japan that never ices, and the second most transparent lake in Japan. Nakano-shima, an island in the middle of the lake, houses the Tōya Lake Forest Museum.
Lake Tōya was called Kim'un-to (キムウン (kim'un) means "in the mountain"[3] and ト (to) means "lake"[3]) by the Ainu. In the Meiji era, Japanese pioneers named the lake Tōya after the Ainu expression to ya, which means "lakeland."[3]
The 2008 G8 Summit was held at Lake Tōya and The Windsor Hotel Toya Resort & Spa.