Blackstrap Reservoir is a man-made reservoir located in central Saskatchewan, Canada, situated south of Saskatoon in the Rural Municipality of Dundurn No. 314. Created in 1967 as part of the Saskatoon South East Water Supply System, the reservoir serves primarily as a water source supporting irrigation and industrial and municipal water supply. Fed by an earthen aqueduct from Lake Diefenbaker and part of the Saskatchewan River drainage basin, Blackstrap stretches an impressive 14.4 km in length with a width ranging from 0.8 to 1.2 km, covering approximately 1,200 hectares (3,000 acres). The reservoir reaches a depth of around 5.14 metres, making it a relatively shallow but productive fishery. Managed by the Saskatchewan Water Security Agency, Blackstrap is a well-known and popular fishing destination in the southern Saskatchewan region, offering anglers access to a solid variety of species in a prairie reservoir setting.