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Recreation AreaRecreation.gov

Black Rock Lake

Thomaston, Connecticut · Litchfield County

Black Rock Lake is located next to Black Rock State Park. A portion of the 35-mile-long Mattatuck Blue Trail System crosses through the reservoir. The 21-acre lake is open seasonally for fishing and non-motorized boating. The lake and brook are stocked with brown, rainbow and brook trout by the State. Opportunities abo…

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41.65754, -73.10775
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5-Day Forecast

Weather at Black Rock Lake

Live forecast for the park. Plan your visit accordingly.

Avg High70°F
Avg Low53°F
Peak Rain Chance9%
Humidity77%
UV (avg)5
Air Quality73 · Moderate
Today
☁️
Overcast
73°/57°
💧 4%🌬 6mph
↑ 6:49 AM ↓ 6:33 PM
Fri
🌦
Drizzle
78°/61°
💧 7%🌬 9mph
↑ 6:50 AM ↓ 6:32 PM
Sat
☁️
Overcast
65°/53°
🌬 10mph
↑ 6:51 AM ↓ 6:30 PM
Sun
🌦
Light Drizzle
64°/46°
💧 9%🌬 9mph
↑ 6:52 AM ↓ 6:28 PM
Mon
☁️
Overcast
69°/46°
💧 4%🌬 13mph
↑ 6:53 AM ↓ 6:27 PM

Forecast data © Open-Meteo. Refreshed every 6 hours. Always check the most recent forecast before heading out.

About Black Rock Lake

Black Rock Lake is located next to Black Rock State Park. A portion of the 35-mile-long Mattatuck Blue Trail System crosses through the reservoir. The 21-acre lake is open seasonally for fishing and non-motorized boating. The lake and brook are stocked with brown, rainbow and brook trout by the State. Opportunities abound for wildlife viewing. For up-to-date information, call (860) 283-4900.

How to Get There

Route 8 to exit #38. Follow US Route 6 West to Route 109 North. The dam and reservoir area is one mile from the intersection of 6 and 109.

Driving directions (Google Maps) →

Plan Your Visit to Black Rock Lake

Heading to Black Rock Lake? A few things to know before you go:

  • Reservations: popular sites fill up fast — check Recreation.gov 6 months in advance
  • Fees: day-use and camping fees vary; check current rates on the official park page
  • Trash & pack-out: follow Leave No Trace principles
  • Wildlife: store food in bear boxes where provided; never feed wildlife
  • Weather: the 5-day forecast above is updated every 6 hours; verify just before you go

Frequently Asked Questions

Do I need a reservation for Black Rock Lake?

No central reservation system listed for Black Rock Lake. Check the official page (https://www.recreation.gov/recarea/199) for the latest entry policy and availability.

How do I get to Black Rock Lake?

Route 8 to exit #38. Follow US Route 6 West to Route 109 North. The dam and reservoir area is one mile from the intersection of 6 and 109.

How do I contact Black Rock Lake?

You can reach the park at phone: (860) 283-5540.