The Klamath River Ridges is characterized by highly dissected mountains, with a dry, continental climate. Elevation varies from 3,800 to 7,500 feet (1,158 to 2,286 m). Vegetation varies with slope, aspect, and elevation. Higher altitudes and north-facing slopes have Douglas-fir and white fir; lower elevations and south-facing slopes are covered in ponderosa pine and western juniper, species that are more drought-resistant than other vegetation types found within the region. The chaparral features Oregon grape, western fescue, snowberry, bluebunch wheatgrass, and ceanothus. The region covers 121 square miles (313 km2) in Oregon near the Siskiyou Summit, including portions of the Rogue River – Siskiyou National Forest and the Cascade–Siskiyou National Monument. Contiguous areas in California have not been mapped yet.
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