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Ōnuma Quasi-National Park

Ōnuma Quasi-National Park (大沼国定公園, Ōnuma Kokutei Kōen) is a 90.83 km2 (35.07 sq mi)[1] quasi-national park on the Oshima Peninsula in southwest Hokkaidō, Japan. The park encompasses the volcanic Hokkaidō Komagatake (北海道駒ケ岳, Hokkaidō Koma-ga-take) as well as the Ōnuma (大沼) and Konuma (小沼) ponds, which abut against the west slope of the mountain. The park, which was designated as quasi-national in 1958, is the smallest major park in Hokkaidō.

Ōnuma Quasi-National Park
IUCN category II (national park)
Komagatake dusk.jpg
Hokkaidō Komagatake, in the center of the park, at dusk.
Map showing the location of Ōnuma Quasi-National Park
Map showing the location of Ōnuma Quasi-National Park
LocationHokkaidō, Japan
Nearest cityNanae
Coordinates42°00′44″N 140°40′16″E / 42.0121°N 140.671°E / 42.0121; 140.671[1]Coordinates: 42°00′44″N 140°40′16″E / 42.0121°N 140.671°E / 42.0121; 140.671[1]
Area90.83 km2 (35.07 sq mi)
EstablishedJuly 1, 1958
Official nameOnuma
Designated3 July 2012
Reference no.2058[2]

Ōnuma and Konuma were created when mudflows due to eruptions of Hokkaidō Koma-ga-take dammed up depressions at the base of the mountain. The ponds, which are dotted with watershields, are surrounded by birch and maple forests.


Related cities, towns and villagesEdit

See alsoEdit


  1. ^ a b Onuma Quasi National Park
  2. ^ "Onuma". Ramsar Sites Information Service. Retrieved 25 April 2018.

External linksEdit