Great Meadows National Wildlife Refuge

Great Meadows National Wildlife Refuge
IUCN category IV (habitat/species management area)
View of Great Meadows, Concord
Location within Massachusetts
Location	Concord, Massachusetts, Sudbury, Massachusetts, United States
Nearest city	Concord, Massachusetts
Coordinates	42°28′30″N 71°19′47″W / 42.47500°N 71.32972°W / 42.47500; -71.32972Coordinates: 42°28′30″N 71°19′47″W / 42.47500°N 71.32972°W / 42.47500; -71.32972
Area	250 acres (100 ha)
Established	1944
Governing body	U.S. Fish and Wildlife Service
Website	Great Meadows National Wildlife Refuge

The Great Meadows Wildlife Refuge is a 12-mile (19 km) river wetlands conservation area, in two major parcels, stretching from the towns of Billerica, Massachusetts (downstream) to Wayland, Massachusetts (upstream), along the Concord River and Sudbury River.

Part of the National Wildlife Refuge system, the park is a popular destination for bird watchers and tourists. About 85 percent of the refuge's 3,600 acres (15 km²) is freshwater wetlands.

The original 250-acre (1.0 km²) Concord, Massachusetts parcel that was the beginning nucleus of the sanctuary, has been known as the "Great Meadows" since the 17th century. The parcel was donated to the U.S. Government by Concord resident Samuel Hoar in 1944. Hoar purchased a part of the Meadows in 1928, and built earthen dams (dikes) to hold the water within the marshlands, enhancing their value as waterfowl habitat for hunting. To provide greater protection for the area’s wetlands and wildlife, the U.S. Fish and Wildlife Service began buying additional land during the 1960s.

A great diversity of birds have been recorded at the refuge, including nesting waterfowl: mallards, black ducks, wood ducks, and blue-winged teal. White-tailed deer, muskrats, red fox, raccoons, cottontail rabbits, weasels, beaver, squirrels, and a variety of small mammals are common. Many species of amphibians and reptiles are active during the warmer months.