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Scuba Diving in Connecticut, United States

Destination guide

Scuba diving in Connecticut, United States

Connecticut, United States has 6 public dive sites on PickADive. Use the list below to compare mapped sites by depth, access, difficulty, ratings, and reviews before opening a site page.

Public sites
6
Indexed destination pages
Reviews
0
Catalog review count
Rating
Building
Reviews are still growing
Common access
Shore
4 dive sites

Seasonal patterns

Best months, historically in Connecticut, United States

Typical conditions by month across dive sites in Connecticut, United States— historical patterns, not a forecast.

  1. Jan77%
  2. Feb82%
  3. Mar74%
  4. Apr84%
  5. May87%
  6. Jun96%
  7. Jul97%
  8. Aug96%
  9. Sep94%
  10. Oct91%
  11. Nov83%
  12. Dec82%

From 5 sites’ typical conditions · historical typicals, not a forecast

Best dive sites in Connecticut, United States

Showing 16 of 6

Map of Gardner Lake (Sunken House)

Gardner Lake (Sunken House)

Connecticut · Up to 15.2 m

A 528-acre natural lake in Salem/Bozrah/Montville famous for the house that fell through the ice in 1895 while being moved across the frozen lake, settling in deep water near the middle. Divers have long visited the collapsed structure, though by the 2000s it was reported mostly rotted away. The site is usually reached by boat from the state launch.

IntermediateBoat entry
Map of Stonington Point (Dubois Beach)

Stonington Point (Dubois Beach)

Connecticut · 1.5–6.1 m

Connecticut's most popular shore dive, at the tip of Stonington Borough where two stone jetties shelter a sandy beach entry. The shoreline slopes gently to about 20 feet over boulder fields covered in kelp and seaweed, and Gulf Stream-carried tropical juveniles appear in late summer. It is an easy, protected site widely used for training and night dives.

Shore entry
Map of Candlewood Lake

Candlewood Lake

Connecticut · Up to 25.9 m

Connecticut's largest lake, a 1928 man-made reservoir whose flooded valley still holds old roads, stone walls, foundations, Model T-era vehicles and small plane wreckage that divers seek out. The Candlewood Lake Authority acknowledges it as a popular dive destination but warns that it is dark, low-visibility diving requiring lights and preparation. Most diving is done from boats or town launch areas around the lake.

IntermediateShore + boat
Map of Brownstone Quarry (Brownstone Exploration & Discovery Park)

Brownstone Quarry (Brownstone Exploration & Discovery Park)

Connecticut · 0–25.9 m

A flooded 27-acre historic brownstone quarry in Portland operated as an adventure park, with 80-100 foot cliffs surrounding clear fresh water. Scuba diving is permitted in the north quarry for certified divers who buy an adventure pass, with depths to about 85 feet and submerged quarry features and attractions to explore.

IntermediateShore entry
Map of Bigelow Hollow State Park (Mashapaug Lake)

Bigelow Hollow State Park (Mashapaug Lake)

Connecticut · 0–12.2 m

A designated scuba area on Mashapaug Lake inside Bigelow Hollow State Park in Union, one of the few Connecticut state park waters that formally permits diving. The dive access is a small cove about a quarter mile from the Mashapaug Lake boat ramp, over a rocky and sandy freshwater bottom with a maximum depth around 40 feet.

Shore entry
Map of Squantz Pond State Park

Squantz Pond State Park

Connecticut ·

A 288-acre lake separated from Candlewood Lake by a causeway, with a state park on its shore in New Fairfield that explicitly allows scuba diving along with swimming and boating. Diving is over a gently sloping freshwater bottom from the park's shoreline; it is a popular regional training spot with typically modest visibility.

Shore entry

Plan a dive in Connecticut, United States

Compare nearby sites

Connecticut has 6 public dive sites in the PickADive catalog. Start with the map when coastline, nearby alternatives, and travel distance matter.

Explore sites on the map

Match depth and difficulty

Current public data shows 3 intermediate dive sites. Listed depths range from about 0m to 26m where available. Shore is the most common listed access type. Use those signals as a starting point, then confirm the plan against training, equipment, and current local guidance.

Check conditions close to the dive

PickADive can help with research and comparison, but it does not certify that a dive is safe today. Weather, current, visibility, entry, boat traffic, and local rules can change quickly.

How condition context works

Common questions about diving in Connecticut, United States

What are the best dive sites in Connecticut, United States?

Use the ranked list on this page to compare 6 public dive sites in Connecticut. PickADive highlights ratings, reviews, depth, access type, difficulty, and mapped location so you can move from destination research to a specific site page.

Is Connecticut beginner-friendly for scuba diving?

PickADive does not yet have enough beginner-labeled public site data to summarize Connecticut confidently. Review difficulty, access, depth, and recent notes on each site page before deciding.

Are there advanced dives in Connecticut?

PickADive does not currently show many advanced-labeled public sites in Connecticut. A dive can still be demanding because of weather, entry, navigation, visibility, current, or depth.

What depths can I expect in Connecticut?

Listed PickADive depth data for Connecticut ranges from about 0m to 26m. Use that as a research starting point, then verify current conditions and site-specific guidance.

Can I see Connecticut dive sites on a map?

Yes. Use the map link on this page to compare Connecticut dive sites by location, coastline, nearby alternatives, and individual site details.