In 1958 the St-Lawrence seaway was created. The depth of the seaway was increased to allow larger ships to travel to the Great Lakes. As such many villages, road ways, locks, power houses, canals were submerged and can be seen by divers.

The St-Zotique underwater park boasts four wrecks: the Fédéral 11, The Teddy W, The Anne-Marie G, and the Fédéral 4. There are multiple anchors all linked together with cables so divers do not get lost.

This site is located near Parc des Ancres. A lot of parking available. There is also a large covered area suitable for completing log books. This site is used extensively for training. The water here is shallow with a maximum depth of 7 meters. The area is protected by mounts on three sides and the water is calm.

In 1958 the St-Lawrence seaway was created. The depth of the seaway was increased to allow larger ships to travel to the Great Lakes. As such many villages, road ways, locks, power houses, canals were submerged and can be seen by divers.

Lock 21 is an exciting and unique dive where you get to go back in time and dive a 19th century submerged Victorian canal lock on the St. Lawrence River. This dive can have strong currents and is best done by experienced divers.

This is the only local dive site in the Montreal area that allows you to reach 100 feet deep. This freshwater quarry is open Tuesday evenings and during the day over the weekends. There is a $20 cash only access fee to be paid upon arrival.

A great site to dive the historic Locks of the St. Lawrence River. This site is accessible from the Canadian side of the river. A nice dive for beginners as there is no current and the depth is shallow.

Multiple entry points. There is a wall drop-off where you can enter, but the site can also be accessed from an easy gradual shore entry point (near the wreck of Wee Hawk). This is a shallow drift dive that can end up at the Conestoga Wreck.

The Wee Hawk wreck is very deceiving and should be viewed from the exterior; it is located in very shallow and calm water. Penetration should not be attempted without proper training.

This site was set up by the City of Prescott. It has easy access and a nice set up for divers. The area is shallow with calm water. Bottom composition is silt.