- Site number:539
- Area:510 ha
- Designation date:12-12-1991
- Coordinates:42°42'N 141°43'E
Materials presented on this website, particularly maps and territorial information, are as-is and as-available based on available data and do not imply the expression of any opinion whatsoever on the part of the Secretariat of the Ramsar Convention concerning the legal status of any country, territory, city or area, or of its authorities, or concerning the delimitation of its frontiers or boundaries.
Utonai-ko. 12/12/91; Hokkaido; 510 ha; 42°42'N 141°43'E. National Wildlife Protection Area. A freshwater lake in the Bibi River floodplain, surrounded by reed-sedge swamp, swamp forest and stands of wild rice. One of the most important staging and wintering areas for Anatidae (ducks, geese, swans, etc.) in Japan. Human activities are fishing and nature conservation devoted to research and monitoring projects. Ramsar site no. 539. Most recent RIS information: 1992.
- National legal designation:
- special protection area in national wildlife protection area
- Last publication date:01-01-1992