Lesser Slave Lake

This article is about the lake in Alberta. For the electoral district, see Lesser Slave Lake (electoral district). For the lake in the Northwest Territories, see Great Slave Lake.

Lesser Slave Lake
Southeast corner of the lake from Marten Mountain looking south, with Dog Island, Devonshire Beach, and the Town of Slave Lake visible in the distance
Lesser Slave Lake Location within Alberta
Location	Big Lakes / Lesser Slave River No. 124, Alberta
Coordinates	55°26′26″N 115°29′19″W
Type	Eutrophic
Primary inflows	South Heart River, Swan River Driftpile River, Assineau River, Marten River
Primary outflows	Lesser Slave River
Catchment area	13,900 km2 (5,400 sq mi)
Basin countries	Canada
Max. length	+100 km (62 mi)
Max. width	15 km (9.3 mi)
Surface area	1,168 km2 (451 sq mi)
Average depth	11.4 m (37 ft)
Max. depth	20.5 m (67 ft)
Water volume	13.69 km3 (11.10×10^6 acre⋅ft)
Shore length1	247 km (153 mi)
Surface elevation	578 m (1,896 ft)
Settlements	Slave Lake, High Prairie, Alberta
References
1 Shore length is not a well-defined measure.

Lesser Slave Lake is located in northern Alberta, Canada, northwest of Edmonton. It is the second largest lake entirely within Alberta boundaries (and the largest easily accessible by vehicle), covering 1,160 km² (450 sq mi) and measuring over 100 km (62 mi) long and 15 km (9.3 mi) at its widest point. Lesser Slave Lake averages 11.4 m (37 ft) in depth and is 20.5 m (67 ft) at its deepest. It drains eastwards into the Athabasca River by way of the Lesser Slave River.

The town of Slave Lake is located at the eastern tip of the lake, around the outflow of Lesser Slave River.