NBM Dive Site Resource
Brownstone Quarry
Portland, Connecticut, United States
A seasonal Connecticut adventure park with controlled scuba access to its north quarry.
Save this dive site to your free member profile.
Quarry Picture Placeholder
Aquatic life at this dive site
What divers may encounter
Three reviewed connections are featured here. Sightings vary by season, conditions, and chance, so they are never guaranteed.
Largemouth Bass
Micropterus salmoidesThe current site guide reports largemouth bass at Brownstone Quarry. Divers may encounter them along quarry walls, ledges, and sunken attractions.
USFWS Mountain PrairieOpen Aquatic Life Profile →
Bluegill
Lepomis macrochirusThe current site guide reports bluegill at Brownstone Quarry. They are most likely around shallower cover and submerged training structures.
USFWS Mountain PrairieOpen Aquatic Life Profile →
Yellow Perch
Perca flavescensThe current site guide reports yellow perch at Brownstone Quarry. Divers may see individuals or small groups close to the bottom and structure.
Robert CollettaOpen Aquatic Life Profile →
Site media
Photographs
Three views rotate from the published gallery on each visit.
Contributor media
Dive videos
Three featured video positions are reserved on every profile.Published reference location
Location map
The marker shows the public coordinates associated with this profile. Confirm current access, moorings, and departure details before the dive.Map data © OpenStreetMap contributors
Recent field observations
Diver-reported temperatures
Automatically checked observations from dives during the past 14 days. Three reports are visible at a time; scroll for more.A report that passes the automatic checks will appear here with the dive date, diver’s display name, and temperatures at each depth.
Reports are automatically checked for plausible dates, depths, and temperatures. They are observations, not forecasts; confirm conditions before diving.
Why divers know this place
Highlights
Historic brownstone quarry, high rock walls, easy entry, and training platforms.
Quarry-only module
Quarry layout and services
This section appears only for quarries and mines, with the practical details divers need for entries, training areas, submerged features, surface support, and current operations.
- Current operating status
- Summer operating schedule; reserve a dated pass
- Training platforms
- Historic brownstone quarry, high rock walls, easy entry, and training platforms.
- Submerged attractions
- Historic brownstone quarry, high rock walls, easy entry, and training platforms.
- Onsite dive services
- Parking, restrooms, food and visitor facilities; scuba services vary by date.
- Surface facilities
- Parking, restrooms, food and visitor facilities; scuba services vary by date.
Before you arrive
Access notes
Purchase the appropriate park pass, complete the waiver, present certification, and confirm that scuba is offered on the selected date.
Plan within your training
Conditions and hazards
Depth, quarry walls, submerged structures, mixed recreation users, and changing visibility.
At the site
Facilities and support
Parking, restrooms, food and visitor facilities; scuba services vary by date.
Independent resource notice
This record is a starting point for independent verification. Access, closures, moorings, weather, currents, depth, visibility, operator availability, and site conditions can change without notice. Confirm current information with the responsible operator, property owner, managing authority, or another qualified local source before planning or attempting a dive.