Scuba Diving Sites Near Montreal

Below you'll find a list of popular scuba diving sites close to Montreal, within a 2 hour drive. Use this page to find sites for your own dives, or for outings and courses with Action Scuba. 

Most of the best local scuba diving in actually located in the Saint Lawrence River, especially in the world famous Thousand Islands. Local lakes and quarries are generally cold and murky with little to see. The Saint Lawrence offers a huge number of historical shipwrecks and no thermocline, with temperatures reaching in to the mid 70's in summer.

Check back often for updates - this is a work in progress.

Dive Site Description Diver Level Location

Pointe-des-Cascades, Quebec

A dive site just off the western tip of Montreal used by some dive centres for local scuba diver training and PADI instructor exams. Shallow, muddy, and not very interesting as a dive. 

Max depth about 20-25 feet.

Open Water

Greater Montreal

Olympic Stadium Pool

Although this is an indoor setting, it is deeper than a standard pool with depths up to 50 feet. Good for winter practice and training. 

Open Water

Island of Montreal

Kahnawake Quarry / Bédard Quarry

A quarry located on the south shore of Montreal, used by some dive centres for local scuba diver training. Deep, cold and of little interest to certified divers except for practice and training.

Max depth about 300 feet.

Open Water

Greater Montreal

Conestoga (wreck)

Shipwreck located just off shore. Very popular dive site for new divers and those looking for a bit of easy but enjoyable diving. Access is free and very easy. Some current.  

Max depth 30 feet. No penetration possible.

Learn more at Save Ontario Shipwrecks.

Included in Action Scuba's free shore dive schedule

Open Water

Cardinal, Ontario

Rothesay (wreck)

A fun wreck dive about 300 feet from shore, accessible by a guide line underwater.

Max depth about 30 feet. 

Included on Action Scuba's free shore dive schedule

Open Water

Prescott, Ontario

Centeen Park

Very popular dive site for scuba training and certification because of warm water temperatures in summer. Action Scuba's certification location. Not much to see, as with most training grounds.

Max depth around 30 feet. Easy shore access, street parking.

Also acts as a starting point for technical divers to reach the Robert Gaskin shipwreck. Do not attempt unless properly trained.

Open Water

Brockville, Ontario

Robert Gaskin (wreck)

Boat Dive. Very popular shipwreck site just facing Brockville town centre. 3 masted wooden boot built in 1863 and sank in 1889. Medium to strong current at times. 

Max depth 60 feet.

Action Scuba Open Water students have the option to dive this site for free following their 4 certification dives.  

Included on Action Scuba's charter schedule

Open Water

Brockville, Ontario (Thousand Islands)

Henry C Daryaw

Boat dive. Steel freighter built in France in 1919, measuring approximately 220 feet long. One of the few metal shipwrecks in the 1000 Islands. Sunk in 1941 after striking a shoal (the large gash can be seen) she came to a rest on the bottom perfectly inverted. Highlights include the ships props and the cargo holds which are now underneath the wrech. 

Wreck penetration is possible but you must be wreck certified and experienced for this is a dark and difficult wreck. Otherwise best enjoyed from the outside using the chains and ropes to pull oneself upstream, followed by a drift back over the top to the props.

Max depth about 90 feet. Very strong current (up to 4 knots)

Included on Action Scuba's charter schedule

Advanced Open Water+

Brockville, Ontario (Thousand Islands)

Lillie Parsons (wreck)

Boat Dive. Beautiful upside 19th century wooden centreboard schooner, 131 feet long.  Sank in 1877. Can have very strong current at times. Excellent drift dive. 

Penetration possible but should be Wreck certified.

Wreck sits between 40-90 feet.  Wall drops off to 180+ feet so care should be taken with depth. 

Included on Action Scuba's charter schedule

Learn more about this wreck from Save Ontario Shipwrecks.

Open Water / Advanced Open Water+

Brockville, Ontario (Thousand Islands)

Muskie / Musky / Muscallonge (wreck)

Boat Dive.  Built in 1896, she measured 128 feet long and at the time was the longest tug in the Great Lakes. She caught fire and sank in 1936. There is lots to see on this wreck (boiler, winches, engine and various other artifacts) and the fish are always plentiful. Strong currents possible.

Max depth 90-100 feet.

Included on Action Scuba's charter schedule

Advanced Open Water+

Brockville, Ontario (Thousand Islands)

JB King (wreck)

Boat Dive.  140 ft wooden barge being used to blast and build the seaway / Brockville Narrows was struck by lightening in 1930 and exploded, killing most on board. This dive site is regarded as a grave site by many.

Very strong current.  Wreck sits between 90-180 feet. 

Max depth 200+ feet in the channel.

This dive should be for experienced divers only, comfortable with strong current and deep diving.

Included on Action Scuba's charter schedule

Advanced divers / Deep Divers / technical divers 

Brockville, Ontario (Thousand Islands)

Kinghorn (wreck)

Boat Dive. Well preserved wooden vessal approx 140 feet long featuring open holds. Sank in 1897 in a storm. Highlights include the ship's wheel, pump, winch, anchor, stove. Medium current should be expected.

Max depth: 90 feet.

Included on Action Scuba's charter schedule and a regular site for our PADI Advanced Open Water Diver certification.

Advanced Open Water

Rockport, Ontario (Thousand Islands)

Ash Island Barge (wreck)

Boat Dive. This wooden barge was used to build the Thousand Island Bridge and was scuttled when work was complete. The dive site features a beautiful white shell bottom.

Wreck sits between 100-120 feet. Greater depths possible past the wreckage in the channel.

Excellent site for deep or technical diving training. Divers can use the line or the wall for ascents or descents.

Included on Action Scuba's charter schedule

Advanced Open Water

Rockport, Ontario (Thousand Islands)

Milles Roches Powerhouse

Boat Dive. Strong current. Included on Action Scuba's charter schedule

Learn more from Save Ontario Shipwrecks

Advanced Open Water

Cornwall, Ontario

Belly Dumper + wrecks

Boat Dive. Series of shipwrecks connected by a guide line. Included on Action Scuba's charter schedule

Advanced Open Water

Cornwall, Ontario

Lock 21

Shore dive. Part of the Lost Villages flooded for the construction of the Saint Lawrence Seaway. Strong current. Included on Action Scuba's shore dive schedule

NOTE: Winter access is limited due to lack of snow removal on the roadway.

Learn more about this dive site from Save Ontario Shipwrecks.

Advanced Open Water

Long Sault Parkway, Ontario

Lock 23

Shore dive. Part of the Lost Villages flooded for the construction of the Saint Lawrence Seaway. Strong current. Included on Action Scuba's shore dive schedule

Advanced Open Water

Morrisburg, Ontario

Morrison's Quarry

A privately owned flooded quarry near Ottawa (but still in Quebec) that is set up for scuba diving, complete with a sunken plane, mini-sub and more. As with all quarries, there are several thermoclines, so be prepared for very cold water below 40-50. Being in Quebec, the FQAS diving permit is required. Access fee payable on the spot to the owners of around $10 / diver. Washrooms, picnic area, parking etc. Camping possible.

All levels. 

Wakefield, Quebec

Kingston / Shipwreck Graveyard

Where the Saint Lawrence meets Lake Ontario is an area known as the Shipwreck Graveyard. Here you will numerous shipwrecks littering the lake floor, thanks in part to the navigational hazards and shifting weather patterns found in this area. Note that as this is in a lake, there are thermoclines and cold water conditions at depth. When the surface temperature is in the 70s, the bottom temperatures can be in the 40s. 

Included on Action Scuba's charter schedule

All levels. Kingston, Ontario
Wolfe Islander

This is an intentionaly sunk ferry boat that used to make the journey between Kingston and Wolfe Island. It features numerous "attractions" including some motorbikes on deck. Very interesting dive, including some penetration possible. Max depth around 70 feet, with the wheelhouse at about 40 feet.

Note that as this is in a lake, there are thermoclines and cold water conditions at depth.  

Included on Action Scuba's charter schedule

All levels. Kingston, Ontario
 
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