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Location Canada, Manitoba
Central coordinates 100o 14.42' West  49o 16.26' North
IBA criteria A4i, A4iii
Area 14,000 ha
Altitude 457 - 460m
Year of IBA assessment 2008

Bird Studies Canada/Nature Canada



Site description The Whitewater Lake catchment basin is located in the southwestern corner of Manitoba, north of Turtle Mountain Provincial Park. It is an alkaline lake that may contain no water for two or three years at a time during dry cycles; during normal years it covers 6,070 hectares, but can be as high as 10,320 hectares (and two metres deep) during years with increased run-off. Over the past 100 years there have been several decades, such as the 1930s and 1980s, in which the lake was dry most of the time. Several small creeks drain into Whitewater Lake, but there is no major natural outlet. The flat terrain surrounding the lake is used for agricultural production. A small rare herbaceous plant (Heliotropium curassavicum) is found here. At the east end of the lake, Ducks Unlimited (DU) have constructed a number of dykes, creating basins that attempt to stabilize water levels for nesting and migrating waterfowl.

Key Biodiversity Up to a quarter of a million geese and ducks have been recorded at Whitewater Lake during fall migration. Many of these birds were Snow Geese, while many others were migrating ducks of several species. About 7% of the Mid-continent population of Snow Geese consistently pass through the Whitewater Lake area in the fall. Also, up to 2,000 Tundra Swans have been recorded in November; this is about 2% of the eastern population of the species. The lake is also used by several geese species, coots and ducks as a spring staging area.

Periodically, when the lake levels are low, the largest shorebird concentrations in southern Manitoba occur on this lake, with up to 23,068 shorebirds observed in the spring of 1987. An impressive 10,000 White-rumped Sandpipers were seen here in 1988; this is 2.5% of the known winter population of the species. Collections of shorebirds dead from botulism in 1998 revealed that Pectoral Sandpipers and Lesser Yellowlegs were the most common species present.

Various waterbirds nest here in significant numbers. Eighty-five pairs of Black-crowned Night Herons have been recorded here. This figure represents 1.7% of the estimated Canadian population for this species. Franklins Gulls nest here in globally significant numbers, with over 3,000 pairs, which is over 1% of the estimated North American population. Also, over 350 Eared Grebes pairs nest at this site. Numerous other wetland and upland prairie species nest at Whitewater Lake and the surrounding area.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Snow Goose Anser caerulescens passage  1982  200,000 individuals  A4i  Least Concern 
A4iii Species group - waterbirds passage  1995-1999  100,000-499,999 individuals  unknown  A4iii   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Whitemud Watershed Wildlife Management Area 324 protected area overlaps with site 64  
Whitewater Lake Wildlife Management Area 8,977 protected area contained by site 8,200  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Grassland Edaphic grassland  -
Wetlands (inland) Freshwater lakes and pools; Saline/alkaline lakes  -
Artificial - terrestrial Urban and industrial areas  -

Land use

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

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Whitewater Lake. Downloaded from http://www.birdlife.org on 23/12/2014

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