Cedar Lake, 1353 km2, 62.5 km long, elev 253 m, is located in west-central Manitoba, north of Lake WINNIPEGOSIS. The lake draws most of its waters from the huge SASKATCHEWAN RIVER drainage basin. Construction of an earthfill dam and 25.6 km of dikes in 1961-64 caused lake levels to rise 3.65 m, and assured a mean annual flow of 688 m3/s at the associated Grand Rapids hydroelectric generating station. The rising waters flooded most of a Cree reserve. The population was relocated to Easterville at the southeast corner of the lake.