Sagebrush Sea spans approximately 100 million acres of the American West,
making it one of the most extensive ecosystems in North America. The heart
of the Sagebrush Sea is shaped by the Columbia River Basin, the Great
Basin, the Wyoming Basin and the Colorado Plateau. The landscape extends
from the east side of the Cascade Mountains in Washington and Oregon,
across the Snake River Plain in Idaho, east to western and central Wyoming,
southwestern Montana, and the western edge of the Dakota grasslands, and
south into western Colorado, northern New Mexico and Arizona. The Sagebrush
Sea includes northeastern California along the Oregon and Nevada border
east of the Sierra Nevadas, northern and central Nevada south to the Mojave
Desert and the West Desert in Utah.
he Sagebrush Sea is high countrymuch of it over 4000 feet in elevation with mountains rising 5000 to 6000 feet or higher above the desert floor. The Sagebrush Sea is basin and range country where long, steep ridges of volcanic uplift and faultblock mountains flank broad basins and valleys. Sagebrush Sea mountain ranges include the Saddle Mountains and Rattlesnake Hills north of the Columbia River; the Warner Mountains, Steens Mountain, Hart Mountain, Owyhees, Sheep Creek and Pueblo Mountains in southeastern Oregon and Idaho; the White Mountains and Bodie Hills of northern California; Nevada's Shoshone, Diamond and Ruby Mountains; Wyoming's Green Mountains and Bear River Range; the Absarokas, Big Horns, and the Crazy Mountains in Montana; and the San Juan Mountains and Uncompahgre Plateau in Colorado.
Adapted from the Sagebrush Sea booklet.