2017 Map of Oso

About this map

The North Fork Stillaguamish River corridor defines the southern half of this landscape, where the settlement of Oso sits near the junction of several mountain-drainage creeks. This 2017 survey documents the topography and rural infrastructure of the border between Skagit and Snohomish counties, a region shaped by its steep river valleys and high ridges like Frailey Mtn and Ebey Hill. Further north, the residential and recreational area surrounding Lake Cavanaugh is detailed, showing the network of roads including N Shore Dr and S Shore Dr that ring the water. The map traces the winding Arlington-Darrington Rd as it follows the river valley through Halterman, providing a clear view of the timbered slopes and hydrologic features such as Birch Lake and Deer Cr that characterize this part of the North Cascades foothills.