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Location Canada, Manitoba
Central coordinates 97o 32.05' West  50o 3.18' North
IBA criteria A4i, A4iii
Area 1,600 ha
Altitude 242 - 245m
Year of IBA assessment 2008

Bird Studies Canada/Nature Canada

Site description Located northwest of Winnipeg, Grants Lake Wildlife Management Area is a small, primarily cattail-filled marsh near the town of Meadow. It has shrunk to a remnant of its former immense status and is now completely surrounded by intensively cultivated farmland. Several young poplar and willow stands dot the area. Ducks Unlimited has manipulated the marsh through the placement of level ditches, a well established method of creating diversity within otherwise homogenous sites, and the blasting of potholes.

Key Biodiversity Historically, this has been a famous wetland for geese, and, to a lesser extent, for ducks. Despite the habitat changes of the past, it is still not uncommon for there to be about 100,000 each of Canada Geese and Snow Geese, utilizing the wetland and adjacent cultivated fields during the fall migration. The Canada Goose numbers are comprised of as many as four subspecies: Short Grass Prairie, Tall Grass Prairie, Eastern Prairie and Giant. The Snow Goose numbers represent perhaps a third of the Mid Continent Snow Goose population. Mallards are one of the most common duck present in the fall.

High breeding densities of Red-winged Blackbirds, Yellow-headed Blackbirds, and Marsh Wrens have been observed at Grants Lake, but there have not been any studies that have determined the precise numbers of these species here.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Canada Goose Branta canadensis passage  1995  100,000 individuals  A4i  Least Concern 
A4iii Species group - waterbirds passage  1995  50,000-99,999 individuals  unknown  A4iii   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Grant's Lake Wildlife Management Area 370 protected area contained by site 400  


IUCN habitat Habitat detail Extent (% of site)
Forest Temperate deciduous woods  -
Shrubland Scrub  -
Grassland Steppe & dry calcareous grassland  -
Wetlands (inland) Freshwater marshes/swamps  -
Artificial - terrestrial Arable land  -

Land use

Land-use Extent (% of site)
nature conservation and research major
hunting major

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Grant's Lake WMA. Downloaded from on 24/10/2016

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