| St. Mary Reservoir | |
|---|---|
 The disused (right) and replacement (left) spillways of St. Mary Reservoir | |
  St. Mary Reservoir | |
| Location | Cardston County, Alberta |
| Coordinates | 49°19′15″N 113°12′42″W / 49.32083°N 113.21167°W |
| Basin countries |  Canada |
| Max. length | 7.9 km (4.9 mi) |
| Max. width | 9.9 km (6.2 mi) |
| Surface area | 37.5 km2 (14.5 sq mi) |
| Average depth | 10.4 m (34 ft) |
| Max. depth | 56.4 m (185 ft) |
| Surface elevation | 1,100 m (3,600 ft) |
| References | St. Mary Reservoir |
St. Mary Reservoir is a reservoir in southwestern Alberta, Canada. It was created for irrigation purposes by the damming of the St. Mary River, which was completed in 1951. The Kainai Nation's Blood 148 Indian reserve borders its northwest side. There are camping and picnic areas at the reservoir, and it is a popular site for power boating, water skiing, windsurfing, swimming and fishing.[1]
- ^ Anonymous. "Atlas of Alberta Lakes". Archived from the original on 2014-12-01. Retrieved 2014-02-01.