2020 Map of Duncan Ridge

About this map

Okanogan National Forest covers this high-altitude landscape in northern Washington, where a network of drainage systems and prominent ridgelines defines the terrain. The hydrology of the area is centered on the various forks of Middle Fork Toats Coulee Cr, which are fed by numerous tributaries including Patsy Cr and Cold Cr. Topographic landmarks like Duncan Ridge and the unusually named Skull and Crossbones Ridge suggest a region shaped by complex geological uplift and erosion, providing significant relief across the quadrangle.