Professor's Lake is a 65-acre (26 ha) spring-fed artificial lake located in Brampton, Ontario, Canada. Beginning in 1918, the area where the lake currently is was used as a gravel pit. In total, the pit produced approximately 20 million tonnes of sand and gravel. It re-opened as a quarry from 1954 to 1973. When digging hit the water table, the gravel pit flooded and the lake was formed.