Lake Lenore (11527)
Canada, North America
Site overview
KBA status: confirmed
Year of last assessment: 2008
National site name: Lake Lenore
Central coordinates: Latitude: 52.5210, Longitude: -105.0005
System: freshwater, terrestrial
Elevation (m): 526 to 541
Area of KBA (km2): 236.24204
Protected area coverage (%): 41.74
KBA classification: Regional
Legacy site: Yes
Site details
Site description: Lake Lenore is situated in central Saskatchewan, midway between the towns of Lake Lenore and St. Brieux. It is a large, slightly saline lake, with an average depth of 5.2 m. The lake is subject to severe water level fluctuations, due to changes in spring runoff and seasonal rains. Outside of the numerous protected bays, emergent vegetation is limited, due to extensive wave action. Vast mudflats develop along the low relief shorelines of the lake as water levels recede during the summer. A margin of wet or dry sedge meadow and associated fine-stemmed grasses forms a 45 to 180 m wide buffer between the adjacent upland and mudflat or water (depending on the time of year). The surrounding upland consists of native grassland and some cropland. There are several islands within the lake, the largest of which, Raven Island, was a peninsula until a drainage canal between Lake Lenore and nearby Ranch Lake (also an IBA) was opened in 1973. All previously cultivated lands on Raven Island have been seeded to dense nesting cover.
Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance that was identified using previously established criteria and thresholds for the identification of Important Bird and Biodiversity Areas (IBAs) and for which available data indicate that it does not meet global KBA criteria and thresholds set out in the Global Standard.
Additional biodiversity: Lake Lenore is a globally significant site for staging waterbirds. Tremendous concentrations of birds are present, notably 80,000 ducks (mainly Mallards and assorted divers), and 40,000 geese during fall migration. In the summer about 4,000 ducks (mainly Mallard, Canvasback, and Lesser Scaup) use the lake as a moulting area. During periods when good shorebird habitat is available, numbers of shorebirds can be as high as was noted in the spring of 25,000 individuals. However, habitat conditions can and do change annually thus shorebird use will be variable. In 1998/98 water levels were extremely high and suitable shorebird habitat was limited. Another interesting record was the 312 Ruddy Turnstones that were recorded during spring migration in 1972. Large numbers of Double-crested Cormorants have been documented breeding at the lake over the years, most recently in 1991, when 853 birds were observed. American White Pelicans also breed at the lake in good numbers, with 162 nests counted in 1991. The nationally endangered Piping Plover has been recorded nesting at the lake in small numbers, with a peak of 9 birds counted during the 1991 International Piping Plover census.
Delineation rationale: 2011-06-06 (BL Secretariat): site area updated from 8800 ha to 23000 ha, following GIS analysis of site polygon by Bird Studies Canada (J. Moore & S. Marquez in litt. 2009).
Habitats
Land use: agriculture | hunting | nature conservation and research | rangeland/pastureland | tourism/recreation
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Wetlands(Inland) | 94 | |
| Artificial - Terrestrial | 3 | |
| Grassland | 2 |