Lake Kuttara

Lake Kuttara (倶多楽湖, Kuttara-ko) is a near circular caldera lake in Shiraoi, Hokkaidō, Japan.[1] It is part of Shikotsu-Tōya National Park. The lake is recognized as having the best water quality in all of Japan.[2] With a transparency of 19 metres (62 ft), the lake ranks second to Lake Mashū according to the Ministry of the Environment.

Lake Kuttara
Lake kuttara alexpetropoulos.jpg
View from the crater rim (August 2017).
Coordinates42°30′N 141°10′E / 42.500°N 141.167°E / 42.500; 141.167Coordinates: 42°30′N 141°10′E / 42.500°N 141.167°E / 42.500; 141.167 [1]
Typeoligotrophic crater lake
Native name倶多楽湖
Primary inflowsnone [1]
Primary outflowsevaporation [1]
Basin countriesJapan
Surface area4.68 km2 (1.81 sq mi)
Max. depth148 m (486 ft)[1]
Shore length18 km (5.0 mi)[2]
Surface elevation258 m (846 ft) [1]
Islandsnone [1]
SettlementsShiraoi [1]
1 Shore length is not a well-defined measure.
Relief Map

Resident species of the lake include a salamander species, Ezo salamander (エゾサンショウウオ, Ezo Sanshōuo). Since 1909, Sockeye salmon have been introduced to the lake.


  1. ^ a b c d e f g h i "Topomap 25000:1 飛生" (in Japanese). Geographical Survey Institute. Retrieved 2008-06-11.
  2. ^ a b "Nature in Shiraoi". Official Website of Shiraoi. Archived from the original on 2011-09-27. Retrieved 2008-06-11.

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