Battle Creek - Cypress Hills

Battle, Middle and Lodge Creek originate in the Cypress Hills of southeastern Alberta and flow in a southeasterly direction into Saskatchewan and across the international boundary into Montana before emptying into the Milk River.

Since these streams are tributaries of the Milk River, sharing the waters of these three stream courses, is governed by both the Boundary Waters Treaty of 1909 , which requires Canada to pass 50% of the flow to Montana, and by Schedule A of the 1969 Master Agreement on Apportionment between Alberta and Saskatchewan. In recognition of Canada's obligations to the U.S. on these streams, the 1969 Master Agreement on Apportionment, Paragraph 6, Schedule A states:

"Notwithstanding paragraph 3 hereof, with respect to each of the three watercourses known as Battle Creek, Lodge Creek, and Middle Creek, the annual flow shall be apportioned such that, in each of the said watercourses, Alberta permits a quantity of water equal to 75 percent of the natural flow to pass the interprovincial boundary from Alberta to Saskatchewan."

The interprovincial balancing period for Battle, Lodge and Middle Creek is the calendar year. Calculations as to the apportionment status are carried out quarterly (more frequently if required) by the Prairie Provinces Water Board. Surplus deliveries by the upstream jurisdiction during a calendar year cannot be banked and cannot be used to offset short falls in subsequent years.

The charts and tables listed below include the natural flow, the flow actually received by Saskatchewan, and Saskatchewan's entitlement, between the years of 1985 to 2004, on Battle Creek, Lodge Creek, and Middle Creek.

• Battle Creek
• Lodge Creek
• Middle Creek