Lac des Arcs is a lake in Alberta, Canada, that forms part of the Bow River.
| Lac des Arcs | |
|---|---|
 A view of Lac des Arcs in October | |
  Lac des Arcs | |
| Location | Bighorn No. 8, Alberta |
| Coordinates | 51°03′15″N 115°10′47″W / 51.05417°N 115.17972°W |
| Primary inflows | Bow River |
| Primary outflows | Bow River |
| Basin countries | Canada |
| Surface elevation | 1,320 m (4,330 ft) |
| Settlements | Lac des Arcs |
Located within Alberta's Rockies, the Hamlet of Lac des Arcs is 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 CPKC Railway main line and Highway 1A follow the northern shore. The lake is also locally known for a local landmark, Adams island (51.053152977037904, -115.18780977137516). This is a small island visible from the Trans-Canada Highway and a common sight seeing attraction for tourisits.[citation needed].
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