Lake Udyl and the mouths of the Bichi, Bitki and Pilda Rivers

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Lake Udyl and the mouths of the Bichi, Bitki and Pilda Rivers

  • Country: 
    Russian Federation
  • Site number: 
  • Area: 
    57,600 ha
  • Designation date: 
  • Coordinates: 
    52°09'N 139°51'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.


A large freshwater lake subject to fluctuations in water level. The site includes wet meadows, floodplains, bogs and mires. Vegetation consists of various emergent aquatic plants and "mari" complexes of low peatmoss bog forests. These include "yerniks", brushes of birches, willow, ledum and sedges, and sparse larch Larix gmelinii forests with Siberian dwarf-pine. The site is very important for large numbers of breeding, molting and migrating waterbirds. The wetland supports populations of rare species, in particular the largest populations of swan goose Anser cygnoides and Steller's sea eagle Haliaetus pelagicus in the Amur region. The site supports various regionally rare forest plants and provides feeding grounds for several fish species. The major human activity is commercial fishing.

Administrative region: 
Khabarovsk Krai

  • National legal designation: 
    • zakaznik/nature sanctuary - Udyl State Zakaznik of federal level (established in 1978, covers 100,400 ha)
  • Last publication date: 


Ramsar Information Sheet (RIS)