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Zoos #4 in Maynard, Massachusetts

Assabet River National Wildlife Refuge

4.7 · 615 reviews
A quiet, preserved wilderness area.
Assabet River National Wildlife Refuge, 680 Hudson Rd, Sudbury, MA 01776, United States
Interesting facts
1

The property contains concrete bunkers left over from its time as a military ammunition storage site.

2

The refuge encompasses a variety of habitats including red maple swamps and oak-hickory forests.

3

Blanding's turtles, a species of special concern in Massachusetts, utilize the refuge for nesting.

4

The refuge was officially established in 2000 as part of the closure and conversion of Fort Devens.

5

Approximately 15 miles of trails allow for year-round wildlife observation and hiking.

6

The site acts as a key component of the Great Meadows National Wildlife Refuge Complex.

Overview

The Assabet River National Wildlife Refuge is a 2,230-acre protected area managed by the U.S. Fish and Wildlife Service, located on land formerly belonging to the U.S. Army's Fort Devens Sudbury Training Annex. The refuge features 15 miles of trails traversing wetlands, vernal pools, and hardwood forests. It provides critical habitat for the state-endangered Blanding's turtle and various migratory songbirds. Visitors can access diverse ecosystems, including shrublands and meadows created by historical agricultural use and military activities. The site serves as a vital corridor for wildlife movement within the Assabet River watershed. Facilities include a visitor center and a designated auto-tour route during specific seasons.

Photo spot

The boardwalk observation deck overlooking the wetlands near the visitor center.

Insider tips

Bring insect repellent, as ticks and mosquitoes are highly prevalent in the wetlands.

Check the official website for seasonal trail closures due to bird nesting or controlled burns.

Download trail maps offline as cellular service can be unreliable in deeper sections of the refuge.

What to avoid

Do not enter areas marked as closed or restricted, which are often active restoration sites or hazardous former military zones.

Good to know

The visitor center is closed on weekends and federal holidays.

Etiquette

Stay on marked trails to protect sensitive habitat, pack out all trash, and keep dogs leashed at all times.

Plan your visit
Typical visit
2-4 hours
Best time to visit
Early morning in spring or autumn for optimal bird migration and turtle activity.
Address
Assabet River National Wildlife Refuge, 680 Hudson Rd, Sudbury, MA 01776, United States
42.408, -71.471
Get directions
Details
WildlifeMigratory songbirds and Blanding's turtles
FacilitiesVisitor center and 15 miles of trails

Frequently asked

Plan for about 2-4 hours to see the highlights.

The best time to visit is Early morning in spring or autumn for optimal bird migration and turtle activity..

The boardwalk observation deck overlooking the wetlands near the visitor center.

Close by you'll find Discovery Museum, Wayside Inn Grist Mill, Callahan State Park.