The Glenmore Reservoir is a large artificial reservoir on the Elbow River in the southwest quadrant of Calgary, Alberta. The Glenmore Dam is the concrete structure that holds back the reservoir. The reservoir is a primary source of drinking water to the city. Built in 1932, with a cost of $3.8 million, the dam controls the downstream flow of the Elbow River, thus allowing the city to develop property near the river's banks with less risk of flooding.
The City of Calgary offers sailing lessons and boat rentals on the reservoir. The reservoir is home of the Glenmore Sailing Club, for both social and organized sailing events in Calgary. Swimming in the reservoir is not permitted.
The reservoir has a water mirror of 3.84 km sq (1.48 sq mi) and a drainage basin of 1,210 km sq (470 sq mi). It has a mean depth of 6.1 m (20 ft) and reaches a maximum depth of 21.1 m (69 ft).