| Lac des Mille Lacs | |
|---|---|
  Lac des Mille Lacs Location of Lac des Mille Lacs in Ontario. | |
| Location | Thunder Bay, Ontario, Canada |
| Coordinates | 48°50′57″N 90°30′38″W / 48.84917°N 90.51056°W |
| Type | Lake |
| Primary inflows | Savanne River |
| Catchment area | 1,774.55 km2 (685.16 sq mi) |
| Max. length | 30 km (19 mi) |
| Max. width | 20 km (12 mi) |
| Surface area | 245.1 km2 (94.6 sq mi) |
| Surface elevation | 457 m (1,499 ft) |
Lac des Mille Lacs is a lake in the western part of Thunder Bay District in northwestern Ontario, Canada. It is in the Nelson River drainage basin and is the source of the Seine River. The lake lies between Ontario Highway 17 on the north and Ontario Highway 11 on the south about 100 kilometres (62 mi) west of the city of Thunder Bay.
Lac des Mille Lacs has an area of 245.1 square kilometres (94.6 sq mi) and a drainage basin of 1,774.55 square kilometres (685.16 sq mi).[1] The named inflows are the Savanne River and McKay Creek at Sawmill Bay at the northeast, Joe's Creek at Baril Bay at the southwest, and Inwood Creek at the north. The only outflow, at the northwest tip of the lake, is the Seine River, which flows to Rainy Lake and eventually via the Nelson River to Hudson Bay. The lake has numerous arms, named bays and named islands.
- ^ "Lac des Mille Lacs Dam". Seine River Watershed. Retrieved 2010-08-07.