Long regarded as "Wakefield's greatest natural resource," Lake Quannapowitt covers an area of . Its outlet is the Saugus River to the Atlantic Ocean. Wakefield Common sits to the south of the lake, and is the site of many recreational activities and events throughout the year. In 1991, a group of local citizens formed "The Friends of Lake Quannapowitt" to advocate for the lake and to educate the public about this natural resource. The group has also raised money for projects that benefit the lake and the surrounding areas.