The Old Saybrook Land Trust, in partnership with the Town of Old Saybrook and the State of Connecticut successfully protected the Great Cedars Conservation Area (Ingham Hill Road, formerly known as the Gleason Property), a 320-acre tract, significant for its size and unique biological features and a 51-acre tract, known as Fairbank Farm Preserve, which abuts the town park and Great Cedars Conservation Area and adds significantly to the greenway envisioned as part of the Old Saybrook Conservation Plan.

Since 2000, the Old Saybrook Land Trust, working with town, state and federal partners, has established ways for migrating fish to bypass dams. Chalker Millpond and Fishing Brook fishways, and in the near future, Crystal Lake Fish Bypass, will completely restore historic migratory fish runs to the headwaters of the Oyster River.

The Old Saybrook Land Trust has recently been awarded a multi-year grant from the Connecticut Department of Environmental Protection Wildlife Division for the control of the non-native, invasive reed, Phragmites australis and for the restoration of the tidal wetlands of North and South Coves in the town of Old Saybrook.