Moses Coulee the southern portion of the plateau. These streams had combined into a canyon that drained to the Columbia near the current mouth of Moses Coulee. These side drainages are still visible today along the coulee walls as truncated streambeds, interspersed with gable-like highlands. The Okanogan lobe of the Cordilleran Glacier moved down the Okanogan River valley, covering 500 mi² of the Waterville Plateau and blocked the ancient route of the Columbia River, backing up water to create Glacial Lake Columbia and Lake Spokane. Initially water discharged from Lake Columbia by running up through the head of Grand Coulee and down
Grand River (Michigan) conducted studies and explains resulted as it moves downstream. The expedition offered presentations, displays and demonstrations to communities along the river in an attempt to interact with the river, its tributaries, and its people throughout the watershed. One of its stops was in Portland, at the riverside Verlen Kruger Memorial pavilion. Kruger traveled over by paddle, was the 1990 and 2000 GRE Rivermaster, and counted the Grand as his favorite river. A 500-passenger dinner cruise ship modeled after a riverboat operates on the river in Lansing. Grand Rapids was built on the site of a mile long rapids on the