Primrose Lake
| Primrose Lake | |
|---|---|
| Location | Division No. 18, Saskatchewan / Lac La Biche County, Alberta | 
| Coordinates | 54°55′N 109°45′W / 54.917°N 109.750°W | 
| Primary inflows | Calder River | 
| Primary outflows | Martineau River | 
| Basin countries | Canada | 
| Surface area | 444 km2 (171 sq mi) | 
| Surface elevation | 559 m (1,834 ft) | 
| Islands | 
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Primrose Lake is a large lake in the Canadian provinces of Saskatchewan and Alberta in the Churchill River drainage basin. The lake straddles the Saskatchewan / Alberta border, with most of the water surface in Saskatchewan with only the south-west corner of the lake in Alberta. On the Saskatchewan side of the lake is Backes Island Wildlife Refuge, which is a small protected island near the middle of the lake that is important to birds. The entire lake plus surrounding land totalling 1,259.52 km2 (486.30 sq mi) is part of an Important Bird Area (IBA) of Canada.