Brownstone Adventure Sports Park
Portland · Connecticut River Valley
Brownstone Adventure Sports Park is the cleanest legal quarry addition in this wave: deep freshwater, distinctive stone walls, and a fully managed public-access setup. It does not read like a secret hole, but it does solve the quarry lane without any fuzzy access story.
Key facts
Swimming
Managed freshwater quarry swimming with an official entry system instead of an informal hole. Expect rules, fees, and a more structured day
Access
Managed quarry park access
Parking
Limited
Current conditions
Trip profile
Difficulty
Reward
Risk
Good fit, skip if, before you go
Good fit
Legal freshwater quarry days in Connecticut
Groups that want a managed access story instead of guesswork
People drawn to clear quarry water and industrial history
Skip
You only want free public-land swims
You are avoiding structured attraction-style water access
Crowds and activity-park energy would ruin the day
Before you go
- Use the official Brownstone entrance and follow the park's day-of access rules.
- Respect posted rules and day-of closures if they exist.
- Check footing, depth, current, and exit options before entering the water.
- Pack out trash and leave access points cleaner than you found them.
- If the stop feels wrong in person, make it a look-only visit.