Excerpt from Factors Influencing the Distribution, Abundance, and Reproductive Success of Ospreys in Voyageurs National Park, Minnesota
Water levels in the four major lakes are regulated by a dam at the outlet of Rainy Lake and by two smaller dams located at the outlet of Namakan Lake. These dams control the levels of Kabetogama, Namakan and Sand Point lakes. Operation of the dams and the lake levels are controlled by general regulations established by the International Joint Commission. The operating plan is commonly referred to as the rule curve; it defines the maximum and minimum levels the water can reach at any given time.
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