Land trusts are nonprofit organizations which own and manage land, and sometimes waters. There are three common types of land trust, distinguished from one another by the ways in which they are legally structured and by the purposes for which they are organized and operated:
The Trustees of Reservations is a non-profit land conservation and historic preservation organization dedicated to preserving natural and historical places in the Commonwealth of Massachusetts. It is the oldest land conservation nonprofit organization of its kind in the world and has 100,000 member households as of 2021. In addition to land stewardship, the organization is also active in conservation partnerships, community supported agriculture (CSA), environmental and conservation education, community preservation and development, and green building. The Trustees owns title to 120 properties on 27,000 acres (11,000 ha) in Massachusetts, all of which are open to the public. In addition, it holds 393 conservation restrictions to protect an additional 20,000 acres (8,100 ha). Properties include historic mansions, estates, and gardens; woodland preserves; waterfalls; mountain peaks; wetlands and riverways; coastal bluffs, beaches, and barrier islands; farmland and CSA projects; and archaeological sites.
The American Battlefield Trust is a charitable organization whose primary focus is in the preservation of battlefields of the Revolutionary War, the War of 1812, and the American Civil War, through the acquisition of battlefield land. The American Battlefield Trust was formerly known as the Civil War Trust. On May 8, 2018, the organization announced the creation of the American Battlefield Trust as the umbrella organization for two divisions, the Civil War Trust and the Revolutionary War Trust, which was formerly known as "Campaign 1776."
Sterling Forest State Park is a 21,938-acre (88.78 km2) state park located in the Ramapo Mountains in Orange County, New York. Established in 1998, it is among the larger additions to the New York state park system in the last 50 years.
Wonder Lake State Park is a 1,145-acre (4.6 km2) Putnam County state park located in Patterson, New York.
The Stewart B. McKinney National Wildlife Refuge is a 950-acre (384.5 ha) National Wildlife Refuge in ten units across the U.S. state of Connecticut. Located in the Atlantic Flyway, the refuge spans 70 miles (110 km) of Connecticut coastline and provides important resting, feeding, and nesting habitat for many species of wading birds, shorebirds, songbirds and terns, including the endangered roseate tern. Adjacent waters serve as wintering habitat for brant, scoters, American black duck, and other waterfowl. Overall, the refuge encompasses over 900 acres (364.2 ha) of barrier beach, intertidal wetland and fragile island habitats.
The Saugatuck Reservoir is a reservoir in Fairfield County, Connecticut, United States, that straddles the border between the towns of Redding, Weston, and Easton. Its completion is marked by the creation of the Samuel P. Senior dam of the Saugatuck River in January 1942, and provides water to several of the nearby towns. The reservoir is surrounded by the Centennial Watershed State Forest and a small section of the Trout Brook Valley State Park Reserve on the southeast end of the reservoir. The Saugatuck Reservoir utilizes an uncontrolled spillway adjacent to the Samuel P. Senior dam that effectively limits the maximum water level. There is also a concrete levee positioned on the southeastern side of the reservoir that prevents water from flooding Trout Brook Valley.
Natural Lands is a non-profit land conservation organization with headquarters in Media, Pennsylvania, dedicated to the management, protection, and conservation of eastern Pennsylvania and southern New Jersey's native forests, fields, streams, and wetlands. The organization owns and manages 43 nature preserves—and one public garden totaling more than 23,000 acres—located in 13 counties in Pennsylvania and New Jersey. Nineteen of the preserves are open to the public for recreational use; the others have limited visitation due to the presence of sensitive ecosystems or limited facilities.
The Trust for Public Land is a U.S. nonprofit organization with a mission to "create parks and protect land for people, ensuring healthy, livable communities for generations to come". Since its founding in 1972, the Trust for Public Land has completed 5,000 park-creation and land conservation projects across the United States, protected over 3 million acres, and helped pass more than 500 ballot measures—creating $70 billion in voter-approved public funding for parks and open spaces. The Trust for Public Land also researches and publishes authoritative data about parks, open space, conservation finance, and urban climate change adaptation. Headquartered in San Francisco, the organization is among the largest U.S. conservation nonprofits, with approximately 30 field offices across the U.S., including a federal affairs function in Washington, D.C.
Open Space Institute (OSI) is a conservation organization that protects land for clean drinking water, public recreation, healthy communities, wildlife habitat, and climate protection. Established in 1974, OSI achieves its goals through land acquisition, fiscal sponsorship, regional loan and grant programs, park and trail improvements, and public policy and advocacy. OSI is active across the country, including the states of New York, Vermont, New Hampshire, Maine, Georgia, South Carolina, Virginia, Tennessee, New Jersey, Massachusetts, Pennsylvania, Alabama, West Virginia, North Carolina, and Florida.
The Montana Land Reliance (MLR) is a nonprofit land trust established to acquire and manage conservation easements in the State of Montana. Headquartered in Helena, Montana, the organization holds 897 easements on 1,137,062 acres of private property across the state. It is the largest land trust in the State of Montana, the largest state-based land trust in the United States, and is accredited by the Land Trust Alliance.
California Rangeland Trust is a conservation nonprofit organization founded in 1998. The Rangeland Trust is the largest land trust in California, having conserved over 371,000 acres (1,500 km2) of rangeland on 90 ranches across 26 counties.
The Conservation Fund is a U.S. nonprofit organization with a dual charter to pursue environmental preservation and economic development. From 2008–2018, it has placed more than 500,000 acres under conservation management through a program whose goal is to purchase and permanently protect working forests. Since its founding in 1985, the organization has protected land and water in all 50 states, including parks, historic battlefields, and wild areas. The Fund works with community and government leaders, businesses, landowners, conservation nonprofits and other partners to integrate economic and environmental objectives.
Joshua's Tract Conservation and Historic Trust, or Joshua's Trust, is a non-profit 501(c)(3) land trust operating in northeast Connecticut. Joshua's Trust was incorporated in 1966 to help conserve property of significant natural or historic interest. As of 2011, the Trust protects more than 5,000 acres, maintains 42 miles of trails that are open to the public, holds educational outreach programs, and publishes the Joshua's Tract Walkbook.
The Webb Mountain Discovery Zone is a 170 acre park and outdoor learning center in Monroe, Connecticut, United States. The adjacent 135 acre Webb Mountain Park connects up to a 13.5 mile trail network.
The Aspetuck Land Trust is a nonprofit organization founded in 1967 that seeks to preserves open spaces in the towns of Westport, Fairfield, Weston and Easton in Fairfield County, Connecticut. In 2011 it was reported that the trust covered an area of 1,700 acres over 43 sites which include public trails.
The Land Trust for Tennessee is an non-profit conservation organization working to protect Tennessee's natural, scenic, and historic landscapes and sites. Since 1999, The Land Trust has conserved more than 135,000 acres (550 km2) of land across 65-plus Tennessee counties.
The Big Sur Land Trust is a private 501(c)(3) non-profit located in Monterey, California, that has played an instrumental role in preserving land in California's Big Sur and Central Coast regions. The trust was the first to conceive of and use the "conservation buyer" method in 1989 by partnering with government and developers to offer tax benefits as an inducement to sell land at below-market rates. Since 1978, with the support of donors, funders and partners, it has conserved over 40,000 acres through conservation easements, acquisition and transfer of land to state, county and city agencies. It has placed conservation easements on 7,000 acres and has retained ownership of over 4,000 acres.
The Peninsula Open Space Trust (POST) is a nonprofit land trust headquartered in Palo Alto, California.
The Maine Coast Heritage Trust is a nonprofit land conservation organization. Its conservation partner is the Maine Land Trust Network, which is one of its programs.
