Conditions
Scored by DiveConnect's site-physics model
Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.
Dived here today? How were conditions vs. what we showed?
About this site
Brownstone refers to a former quarry site in Portland, Connecticut, along the Connecticut River, where sandstone was cut for building material through the 1800s and into the early 1900s before the operation flooded and closed. The quarry pits now hold water and are used as a local dive training and recreation site inland from the riverbank. It is rated a beginner site, which fits its long history as a spot for training and casual local diving.
AI overviewDurable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.
No notes yet. Dived here? Be the first to leave a tip.
Share a write-up or a photo. Submissions are reviewed before they appear on the page.
Nearby dive sites
Shops that dive here
No shops have listed this site yet.