Quaddick State Forest
Thompson, Connecticut (Windham County)
Tucked into Connecticut’s quiet northeast corner, Quaddick State Forest spreads across 1,109 acres of rolling woodland in Thompson, Windham County — part of the rural landscape known locally as “The Last Green Valley.” This state forest offers a genuine escape from the more heavily trafficked parks closer to Hartford and the coast, rewarding visitors with unhurried trails through mixed hardwood and hemlock groves.
The forest’s standout feature is Quaddick Reservoir, a scenic body of water shared with neighboring Massachusetts that anchors much of the recreational experience here. Fishing is popular along the reservoir’s wooded shoreline, with anglers targeting largemouth bass, yellow perch, and chain pickerel. A network of unmarked trails and old forest roads winds through the property, providing solid terrain for hiking, mountain biking, and cross-country skiing when winter snow cooperates. Hunting is permitted in season, so plan accordingly and wear blaze orange during fall.
Birdwatchers will find the mix of wetland edges and mature forest canopy productive for warblers in spring and raptors during fall migration. The relatively low foot traffic means wildlife sightings — white-tailed deer, wild turkey, and the occasional red fox — are common for those who move quietly.
Visit in mid-October for peak foliage, when the hardwoods put on one of Windham County’s best displays. Late spring brings wildflowers and the return of migratory songbirds. Come prepared with a trail map on your phone — signage is minimal, which is part of the charm but worth noting for first-time visitors.
Explore Nearby
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Photos
Nearby Discoveries
12 places to explore within 30 miles
Quaddick State Park
1.2 miles away · 4.5 ★
Pulaski State Park
3.2 miles away
George Washington State Campground
4.5 miles away
Douglas State Forest
4.7 miles away
Southern New England Trunkline Trail
5.9 miles awayLovells Island Range Lights
7.9 miles away
Purgatory Chasm State Reservation
12 miles away
Blackstone River and Canal Heritage State Park
12.8 miles awayRoss Pond State Park
13.8 miles away · 4.6 ★Quinebaug Lake State Park
13.9 miles away · 4.4 ★