The McTavish reservoir (French: Réservoir McTavish), named for Simon McTavish, is an underground reservoir and park located beside McGill University's campus on the southern slope of Mount Royal in Montreal, Quebec, Canada. It holds 37 million gallons of water and is supplied by its large Châteauesque style pump-houses situated in the south-eastern corner of the park. Atop the reservoir is Rutherford Park, and it is also the location of the McTavish automated weather reporting station (CWTA, 71612).
