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Location Canada, Yukon Territories
Central coordinates 134o 24.09' West  60o 33.05' North
IBA criteria A4i, A4iii
Area 5,000 ha
Altitude 1,000 m
Year of IBA assessment 2008

Bird Studies Canada/Nature Canada

Site description MClintock Bay and the Lewes River Marsh are located about 30 kilometres southeast of Whitehorse, in the Yukon Territory. The shallow MClintock Bay is at the north end of Marsh Lake; here the outflow of the Yukon River is adjacent to the inflowing MClintock River, which has a rich delta, mudflats and beds of submergent aquatic vegetation, including pondweeds. Three kilometres downstream along the Yukon River is the Lewes River Marsh, which consists of side channels, shallows, marshes and mudflats on both sides of the main channel.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Trumpeter Swan Cygnus buccinator passage  1995  6,000 individuals  A4i  Least Concern 
Tundra Swan Cygnus columbianus passage  1995  12,000 individuals  A4i  Least Concern 
A4iii Species group - waterbirds non-breeding  20,000-49,999 individuals  unknown  A4iii   


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Freshwater lakes and pools; Freshwater marshes/swamps; Intertidal mud, sand or salt flats; Rivers  -

Land use

Land-use Extent (% of site)
nature conservation and research major
hunting minor
tourism/recreation major
urban/industrial/transport minor
water management major

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: M'Clintock Bay to Lewes River Marsh. Downloaded from on 01/11/2014

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