Fresh Pond Reservation consists of the 155 acre kettle-hole lake called Fresh Pond and 162 acres of surrounding land. The Pond is part of
the reservoir system for the City of Cambridge that includes Hobbs Brook Reservoir in Lincoln, Lexington and Waltham, and Stony Brook Reservoir in Hyde Park. Water from Fresh Pond is purified at the new Walter J. Sullivan Water Purification Facility adjacent to the Pond, and pumped to Payson Park Reservoir in Belmont. From there it flows back to the City by gravity, providing drinking water to residents and businesses of Cambridge.
Today Fresh Pond is a favorite place for many people who enjoy walking, running, bike riding, and roller-blading on the 2 1/4 mile perimeter road. Birders come to observe a wide variety of resident birds, as well as numerous migrating songbirds and waterfowl that pass through every year. Artists, naturalists, and students also treasure this green oasis in its urban setting.