Lac des Arcs (Alberta)

Lac des Arcs
Tundra swans. A few houses of the hamlet can be seen in the trees on the far shore.
Lac des Arcs
Location	Bighorn No. 8, Alberta
Coordinates	51°03′15″N 115°10′47″W
Primary inflows	Bow River
Primary outflows	Bow River
Basin countries	Canada
Surface elevation	1,320 m (4,330 ft)
Settlements	Lac des Arcs

Lac des Arcs is a lake in Alberta, Canada, that forms part of the Bow River.

Located within Alberta's Rockies, the Hamlet of Lac des Arcs is located on the lake's southeastern shore, while the Lafarge Exshaw Plant and a limestone quarry lie on the lake's northern shore.

The Trans-Canada Highway runs along the southern shore, and the Canadian Pacific Railway main line and Highway 1A follow the northern shore. The lake is also locally known for having a small island with nothing but a picnic bench on it, which is visible from the Trans-Canada Highway.