Glacial Lake Glendive was a glacial lake on the lower Yellowstone River. It formed in the valley of Yellowstone, during the late Pleistocene epoch south of the Keewatin Ice Sheet. As the ice sheet retreated northward, the lake drained into the modern Missouri River.
Location: Dawson and Prairie, Montana
Lake type: Glacial lake (former)
Primary inflows: Laurentide Ice Sheet
Primary outflows: Over the divide to the Yellowstone River or along the face of the Ice sheet.