These tables represent the range of Canada-United States transboundary governance mechanisms across North America’s east coast (Maine, New Hampshire, Vermont, Nova Scotia, New Brunswick, Prince Edward Island, Newfoundland and Labrador) at federal, state-provincial and local levels. They are sub-categorised according to major watersheds (general, Gulf of Maine-Bay of Fundy, St Croix River, Lake Champlain and other) and are ordered by date of conception. They contain information on the form and objectives of the agreement, scope of enforcement and management, and relevant stakeholders. The mechanism types are categorised according to treaty, memoranda of understanding (MOU), agreement (MOA) or cooperation (MOC), exchange of notes or other directives. Stakeholders refer to the organisation represented by members of the board, signatories or those otherwise mentioned within the text of the agreement or mandate.