Part 2 includes reservoirs, national trail system, national wildlife refuge system, and national wilderness areas. Reservoirs that are owned or licensed by the federal government are described below. In the Palouse grasslands, there are 15 reservoirs in this category. On tributaries of the lower Columbia River, Willow Creek Lake, USACE, Oregon (N45˚21’ W119˚33’), is a flood … More Palouse Grasslands, Part 2