Boundary waters: exchange of notes between Canada and the United States of America (with memorandum of agreement) - 1989 (English, French, PDF)

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2026-03-06

Archived and Outdated Information: This publication is out of date and should be referenced for research or recordkeeping purposes only. It is not subject to the Government of Canada Web Standards and has not been altered or updated since it was archived. You can request an alternate version of our publications by email at Accessibilite-accessibility@international.gc.ca or telephone at 1-800-267-8376. This category covers exchanges of notes and agreements between Canada and the United States concerning the shared management of boundary waters and related infrastructure. Topics include St. Lawrence Seaway tolls, joint levee construction, water‑supply arrangements, flood‑control measures, and cooperative development of transboundary river basins. These instruments support coordinated water‑resource management and navigation between both countries.

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