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Thomaston Dam

Thursday, May 2, 2024

Other Names

Naugatuck River Valley

Last Known StatusOpen

This scenic area offers a great single track loop (for motorcycles only) with about 12 miles of trail covering 800 acres of public land. There are some technical sections with ruts and some short rocky climbs with tight cutbacks, but overall nothing too bad.

The area is generally open for trail riding during the summer months and weekends are often busy. There have been a couple years (2011-2012) that had delayed openings and early closures due to storm damage and downed trees, leaving a very short riding season.

During the winter, the trails are reserved for snowmobiling and cross-country skiing. Although some parts of the trail are fairly wide, ATVs and quads are not permitted. There is no camping on site but the day use area has picnic tables, restrooms, and water. The nearby model aircraft flying field also has tables and BBQ grills.

This area may close on short notice during and after inclement weather, so call first before heading out.

Trail Map... Nearby ATV Trails...


Permit RequiredYesCT All Terrain Registration required (DMV)
Dates OpenLate May through October 14 (weather and reservoir flood management operations permitting)
Other ATV Stickers AcceptedYes(FL, NY, PA, VT)
Spark ArrestorYesA spark arresting exhaust silencer or end cap is required for all vehicles.
CT All Terrain Registration requires spark arrestor
Noise LimitYesCT All Terrain Registration requires 'reasonable' volume
Whip FlagsNot Required
Maximum Vehicle Width
Allow Dirt Bikes, Trail Bikes and Motorcycles Motorcycles & Dirt BikesPermittedCT All Terrain Registration required (DMV)
Allow All Terrain Vehicles / Quads / Four Wheelers ATVsProhibited
Allow Utility Terrain Vehicles, Side by Sides (SXS), RZR UTV & SXSProhibited
Allow 4x4 Jeeps, SUVs and 4 x 4 Trucks with License Plates SUVs & Jeeps (registered)Prohibited
Dune Buggy & Sand Rail
4x4 (unregistered)
2 Stroke EnginesNo Restriction
MX Helmet RequiredYes
Camping / Overnight RV Parking CampingProhibited
Campfire Restrictions CampfiresProhibited
Night RidingNoriding hours 8am to one hour before sunset or 7pm
Trail BlazingProhibitedkeep on the trail
AlcoholNo Restriction
Rule EnforcementFew/PeriodicOn-Site Office/Station
CommentOut of state registrations from NY, VT, FL and PA are honored.


Approx Size800 acres (1 sq mi)
Miles Of Trail12
Climate TypeForest
Elevation400 to 700 ft.
Trail MaintenanceMarked, Not Rated, Lightly Maintained
Loose DirtThis trail has some loose dirt.Some
Hard PackThe trail has some hard pack terrain.Some
SandThis trail has little sandy areas.Little
MudThe trail has some mud after it rains.Some
DustThe trail has some dust on typical days.Some
RocksThis trail has some rocks.Some
TreesThe trail has many trees.Many
Steep HillsThis trail has no steep hills.None
Water CrossingsThe trail has few water crossings.Few
Small JumpsThis trail has few small jumps.Few
Large JumpsThis trail has no large jumps.None
BermsThe trail has some berms.Some
Sand/Gravel PitsThis USACE land has no sand or gravel pits.None
Single TrackThis USACE land has many single track trails.Many
RoadsThis USACE land has few roads.Few
IntersectionsThis trail has some intersections.Some
Rider TrafficThe USACE land has many rider traffic on typical days.Many
ShadeThis USACE land has some shaded areas.Some
Ranges/GunfireThis USACE land has no shooting ranges or gunfire.None
HazardsThis trail has few hazards.Few(hazards not marked)
Easy Terrain NoviceThis trail has little beginner terrain.Little
Moderate Terrain AmateurThis trail has mostly intermediate level terrain.Mostly
Difficult Terrain ExpertThis trail has little expert terrain.Little
CommentMostly one-way single track motorcycle trails and a couple play areas (ATVs/Quads prohibited throughout).


AreaMotorized Trails
LandArmy Corps of Engineers
MX TRACK  Motocross Track
Max Engine SizeNo Maximum
Min Engine SizeNo Minimum
CommentSmall MX track with berms and whoops and two or three small (5ft) jumps


Gasoline Gasoline5-20 Miles (S)Sunoco (860) 283-0239
Diesel Diesel5-20 Miles (S)Sunoco (860) 283-0239
Potable Water WaterOn SiteDay Use Area
RV Hookups RV Hookup1-5 Miles (SE)Branch Brook Campground (860) 283-8144
RV Dump Station RV Disposal1-5 Miles (SE)Branch Brook Campground (860) 283-8144
Primitive Camping Campground1-5 Miles (SE)Branch Brook Campground (860) 283-8144
Convenience Store Conv Store5-20 Miles (SE)Waterbury




Prosmotorcycles only, one-way single track throughout, great views, some short sections of good technical stuff
Consdam sometimes closed, no ATVs or quads, no camping
Our RatingRatingVery Good
Recommended StayFull Day
Comments(Scroll Down For Rider Reviews & Comments)


Nearest CityThomaston, CT
Address331 Hill Road, Thomaston, CT 06787
Go Back To Connecticut List
Trail MapGo To Trail Map
From: Waterbury, CT
1) Take Route 8 North to Exit 39
2) Turn left (west) off the ramp onto East Main Street
3) At the traffic light, turn right (north) onto North Main Street
4) Continue about 1 mile then turn right (northeast) on Route 222 (Hill Road)
5) Entrance is about 0.5 mile on the left (look for signs)
6) Cross the dam to the main staging area.


Contact InfoArmy Corps of Engineers
331 Hill Road
Thomaston, CT 06787
(860) 283-5540
Contact InfoPathfinders Motorcycle Club
147 Freeman Road
Oxford, CT 06478


Thomaston Dam Trail Photo

Thomaston Dam Trail

A scenic view coming across the dam at the entrance... There is a general information kiosk here, but more detailed info can be found at the trailhead.

Thomaston Dam Trail Photo

Scenic photo taken from main entrance road showing single track trails winding through grassy meadows and hardwood trees.

A look down from the road to the staging area off to the northeast side.  You can see some of the trail system here.

Thomaston Dam Trail Photo

Photo of paved loop with vault toilet and park bench.

After crossing the dam you will find the main staging area is a paved loop with limited parking.  It is well maintained and has a clean restroom.

Thomaston Dam Trail Photo

A close up photo of the paved main entrance road.

Another shot of the road across the dam, entering the area...

Thomaston Dam Trail Photo

Gated yellow entrance with stop signs, chain link fence, singnage and information kiosk.

This is the trailhead or entrance point at the staging area.  The kiosk here has all of the information about motorcycles and motorized use of the trails.

Thomaston Dam Trail Photo

Photo of ranger station with park signage.

The park management office is located at the main entrance off Hill Rd.

Thomaston Dam Trail Photo

Photo of main entrance road entering the forest.

Taken from the staging area, you can just see a portion of the main access road or trailhead road through the trees.  The trails begin short after this point.

Thomaston Dam Trail Photo

Wide dirt access road surrounded by trees.

An access road...

Thomaston Dam Trail Photo

Photo of model aircraft flying field with picnic tables, umbrellas and benches.

This is the model aircraft flying field.  You can access it from the northern entrance off Hill Rd.

Thomaston Dam Trail Photo

Scenic photo of single track trails winding through grassy meadows and hardwood trees.

The single track is in the trees to the left.

Thomaston Dam Trail Photo

Another scenic photo of single track trails winding through grassy meadows and hardwood trees with Naugatuck River nearby.

More scenery from the dam when the water is low.

Thomaston Dam Trail Photo

Scenic photo of trees surrounding the Naugatuck River.

This is a view to the southwest from the road that crosses the dam.

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