The Glenmore Reservoir is a large reservoir on the Elbow River in the southwest quadrant of Calgary, Alberta. It is controlled by the Glenmore Dam, a concrete gravity dam on the Elbow River. The Glenmore Reservoir is a primary source of drinking water to the city of Calgary. 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 reservoir’s perimeter features a scenic, uninterrupted 16km multi-use pathway/pedestrian and cycling trail along the water’s edge, connecting popular city destinations such as the Heritage Marina beach, Heritage Park Historical Village, South Glenmore Park, Glenmore Sailing Club, Weaselhead Flats Natural Environment Park, North Glenmore Park, Calgary Canoe Club, Calgary Rowing Club, and the Earl Grey Golf Club. The reservoir has a water mirror of and a drainage basin of . From 2017 to 2020, the City of Calgary rehabilitated and upgraded the Glenmore Dam at a cost of $81 million. The reservoir is bordered to the west by the Tsuut’ina Nation reserve, to the north by the communities of Lakeview and North Glenmore, to the east by the neighbourhood Eagle Ridge (which sits on the peninsula alongside Heritage Park), and to the south by the communities of Oakridge, Palliser, and Pump Hill. History The Glenmore Reservoir is located on land originally settled by Calgary pioneer Sam Livingston, who gave the area the name Glenmore (Gaelic for "big valley"). The City of Calgary began contemplating the need for a new source of drinking water in the early 1900s. City Alderman John Goodwin Watson proposed a gravity water supply fed from the Elbow River in April 1907. The issue of water scarcity and runoff continued to compound in the 1920s with the Calgary Herald reporting the muddy conditions of the Elbow and Bow River in April 1926. The city retained Canadian architecture firm Gore, Naismith and Storrie to study the inadequate and frequently contaminated water supply in July 1929, with the firm recommending 12 remediation options, including the Glenmore Dam and Reservoir. The City of Calgary would eventually receive approval for a dam and reservoir from the Government of Canada under the Irrigation Act in the late 1920s. The final step was approval from the electorate, which came in the form of a plebiscite during the 1929 Calgary municipal