1980 Map of Yamhill River

About this map

The Yamhill River drainage and the surrounding Oregon Coast Range appear here as they were during the late 1970s and early 1980s. This survey illustrates the transition from the marine environments of Tillamook Bay and the Pacific Ocean to the agricultural heart of the Willamette Valley. Significant landmarks include the Grand Ronde Agency and the Grand Ronde Valley, alongside numerous small coastal and inland settlements like Netarts, Hemlock, and Beaver. The landscape is dominated by the massive acreage of the Tillamook State Forest and Siuslaw National Forest, reflecting the region's enduring timber and conservation legacy. Transportation patterns are clearly defined by the Southern Pacific railroad lines and the established corridors of Us 101 and Or 18. Notable geological and topographical features such as Mount Hebo, the Red Hills of Dundee, and the Wapato Lake Bed highlight the diverse terrain that shaped early development in Yamhill and Tillamook counties.