Home1999 Treaties and Agreements ...Canada (13027) – Agreement for the Sale of Canada’s Entitlement to Downstream Power Benefits within the United States hide Canada (13027) – Agreement for the Sale of Canada’s Entitlement to Downstream Power Benefits within the United States TIAS Office of Treaty Affairs March 31, 1999 Boundaries and Boundary Waters Agreement effected by exchange of notes at Washington March 31, 1999; Entered into force March 31, 1999. With attachment. Download Attachment [2 MB] Tags Boundaries and Boundary Waters Canada International Law, Treaties, and Agreements