2017 Map of Andies Prairie

About this map

Umatilla National Forest encompasses this section of the Blue Mountains, where the high ridges and deep canyons of Umatilla and Union Counties meet. The landscape is defined by its extensive network of water sources, from the N Fork Umatilla River to numerous family-named and descriptive springs such as English Spring, Will Rogers Spring, and Portuguese Spring. These reliable water points long dictated the movement of livestock and travelers through this high-elevation terrain. Access throughout the forest is provided by a complex system of Forest Service roads and historical paths, including the Umatilla Rim Trail and Skyline Rd. The presence of open areas like Andies Prairie and Horseshoe Prairie breaks the timbered ridges of Ninemile Ridge and Andies Ridge, indicating traditional grazing grounds or meadow openings that remain key landmarks for navigation and local history.