A woman on a hike pausing to look at fall scenery (Instagram@baymontinngroton)

Devil's Hopyard State Park

East Haddam, CT

Visit Devil's Hopyard State Park and learn more about the age-old mystery of the round potholes that mark the falls. Devil's Hopyard State Park provides visitors with opportunities to hike to the spectacular waterfall vistas and enjoy some of the finest birding in the state. The park is also a great spot for fishing — especially in the clear, cool Eight Mile River, a designated National Scenic and Wild River by the U.S. Forest Service. One of the main attractions of the park is Chapman Falls which drops more than sixty feet over a series of steps in a Scotland Schist stone formation.

Views from the Park
Location

366 Hopyard Rd.
East Haddam, CT 06423

Details

Open Daily
(8:00 a.m. – Sunset)

Contact

Main (860) 526-2336

Hiker standing on rocks looking at waterfall at Devil's Hopyard State Park (Instagram@smithfarmgetaway)
Activities

Overview

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Know Before You Go 

  • Busses seating 30 or more passengers are not allowed at this park
  • Trails Map

Camping

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The Devil's Hopyard Campground offers 21 spacious, wooded sites near the park's scenic waterfall. 

Devil’s Hopyard Campground

2026 Season: Opens Friday, April 10 and closes Monday, October 12 at noon
2027 Season: Opens Friday, April 9 and closes Monday, October 11 at noon.

Campground Map

  • Daily Rate:  $14 resident/$24 non-resident plus processing fee
  • Six-person maximum per site
  • Maximum stay: 14 days
  • Park Office:  860-526-2336

Reserve a campsite

Know Before You Go

Youth Group Camping

  • 2 sites available, Site 1 accommodates up to 50 campers and Site 2 accommodates up to 30 campers
  • Open to qualified youth groups only
  • Advance reservations are required
  • Youth group camping

Fishing

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KNOW BEFORE YOU GO

Before heading out, be sure to check the latest water conditions and fishing regulations. 

Geology

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What's behind the potholes?

The perfectly cylindrical potholes range from inches to several feet in diameter and depth and are some of the finest examples of pothole stone formations in this section of the country. Early settlers explained their great mystery with tales of how the Devil accidentally got his tail wet in the falls and was so angry, he burned holes in the stones with his hooves as he bounded away. Geologists theorize they formed when stones traveling downstream in the current got trapped in an eddy and spun around and around, the friction wearing a depression in the rock. When one rock wore itself down, another would catch in the same hole and enlarge it even more. 

Rock Types Found on Main Trail: 

Igneous (Pegmatite), Metamorphic (Schist, Gneiss)

Rock Units: 

Brimfield Schist (Ordovician): Gray rusty weathering interlayered schist with a metavolcanic amphibolite gneissic member

Minerals of Interest: 

Biotite, Quartz Crystals

Interesting Geologic Features: 

Glacial plucking, rock shelters, folds, differential weathering, glacial boulder

Hiking

Historic

Nature

Picnicking

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Open air picnic shelter rental

  • 40 x 60-ft. open air shelter
  • Space for 60 people, 10 picnic tables, 2 grills available just outside pavilion, access to nearby restrooms (pit toilets), and non-potable water
  • No running water. Drinking water must be brought in. On-site water is unsafe for drinking
  • Reservations available May 23 -September 7. Shelter closed from November 12 - March 31. Available at other times on a first come, first served basis
  • Rental Fee: $150 (plus $9 processing fee)
  • Parking fee for out-of-state registered vehicles: No fee
  • Learn more about our picnic shelter rental polices and reservation details

Reserve a picnic shelter: 

Additional Park Info

Fees

Free

Accessibility

Fishing Platform

Parking

Picnic Tables

Restrooms

Pets

Picnic Areas & Hiking Trails 
Yes, on leash

Campground
Not permitted