Green Durham Association (GDA) is a non-profit registered charity dedicated to protecting, preserving and enhancing the forests, farmlands and natural areas which lie northeast of Toronto in Uxbridge, north Pickering and adjacent Green Belt lands. Our members are people who live near, enjoy visiting or care about these lands.

GDA supports healthy habitats for flora, fauna, wetlands and watersheds, promotes development of trails for passive recreational use, and provides a constructive voice on all issues which may have implications for our vision for these lands. 

We work in partnership with municipalities, conservation bodies and other partners to plan, acquire and manage trail networks, nature corridors and conservation lands. We support and promote land protection and stewardship efforts on private lands. We support research, make comments and advise on policies and decisions affecting land use.