Elm Brook Park
🌤 Weather at Elm Brook Park by season
| Spring | Summer | Fall | Winter |
|---|---|---|---|
| 20–69 °F | 52–82 °F | 28–74 °F | 11–37 °F |
Each range runs from the coldest monthly average low to the warmest monthly average high in that season (1991-2020 climate normals), measured at Hopkinton Lake, 1 mi away, elevation 430 ft. Conditions at the park can differ from the station, especially where elevation differs — check a forecast before you go.
Elm Brook Park is a day-use area of the U.S. Army Corps of Engineers at the Hopkinton-Everett Lake flood-control project in Hopkinton, Merrimack County, New Hampshire. It is not a New Hampshire state park: you pay the Corps’ day-use fee, and New Hampshire state park passes and reservations do not apply.
Quick Facts
| State | New Hampshire |
| Operator | U.S. Army Corps of Engineers, Hopkinton-Everett Lake |
| Town | Hopkinton (Contoocook), Merrimack County |
| Day-use fee | $5 per private vehicle, $2 per walk-in adult (summer season) |
Things to Do
Elm Brook Park is a day-use park on Elm Brook Pool, part of the Hopkinton-Everett Lake project. You come here to swim at the beach, picnic, fish or launch a small boat. Picnic shelters can be reserved in advance for a fee.
Visitor Tips
All visitors to Elm Brook Park pay the Corps of Engineers user fee. In the 2026 summer season (May 23–August 30) it is $5 per private vehicle and $2 per adult arriving on foot or by bike. Check the Elm Brook Park day-use page on Recreation.gov for the current season before you go. As of October 2026.
Explore More New Hampshire State Parks
Looking for state parks in New Hampshire? Discover them in our Best State Parks in New Hampshire guide, or use our Park Finder to search by activity, location, or features.
Wildlife & Nature
Elm Brook Park — on Elm Brook Pool (US Army Corps of Engineers flood control reservoir) in Hopkinton — provides swimming, picnicking, and fishing on a reservoir surrounded by New England hardwood forest. White-tailed deer, wild turkeys, and foxes inhabit the surrounding woods. Great blue herons fish the shallows. Painted turtles sun on logs. Largemouth bass and pickerel fishing is popular.
Nearby Attractions
Hopkinton — adjacent — has a charming village center. Concord — 10 miles east — is the state capital with the gold-domed State House and the McAuliffe-Shepard Discovery Center. Hillsborough — 10 miles west — has the Franklin Pierce Homestead. Pat’s Peak — 5 miles west — offers skiing.
Park Location
Plan your gear for Elm Brook Park
From our editorial guides, matched to this park’s activities:
Top Tours & Activities Near New Hampshire
from $75
from $55
from $20