Ōnuma (大沼) is a low-lying lake in Wakkanai, Hokkaidō, Japan. Its surface area of 4.67 km2 (1.80 sq mi) makes it, by this metric, the twentieth largest on the island. Located a short distance inland from Sōya Bay (宗谷湾), with the city centre to the west and Wakkanai Airport to the east, Ōnuma provides a resting point in the autumn for swans from Siberia on their way to their winter grounds, and again in spring upon their return.[1][2]

See also

References

  1. ^ 付1 湖沼面積 [Appendix One: Lakes by Surface Area] (PDF) (in Japanese). Geospatial Information Authority of Japan. 1 October 2018. Archived from the original (PDF) on 9 June 2019. Retrieved 28 September 2019.
  2. ^ 大沼野鳥観察館（大沼バードハウス） [Ōnuma Wild Bird Observatory (Ōnuma Bird House)] (in Japanese). Wakkanai City. Retrieved 28 September 2019.