What We Do


The St. Croix International Waterway Commission is is an international partnership that protects and enhances the health, heritage and beauty of a shared waterway.


We envision a vibrant organization that protects, restores and manages natural habitats; offers exceptional backcountry experiences; and celebrates our shared, cross-boundary cultural heritage.

The SCIWC was established through a 1986 Memorandum of Understanding and 1987 Legislative Acts by the State of Maine and the Province of New Brunswick and extends the full length of the St. Croix boundary waters, from their origin at the source of Monument Brook in Aroostook and York Counties to their confluence, 185km/110mi distant, with Passamaquoddy Bay in Washington and Charlotte Counties. Also part of the Waterway is a 250ft/75m corridor of adjacent shore lands in both countries.

Each year we develop programs in line with the goals of our management plan