R.E. Wells 1989 <p>The Cape Disappointment-Naselle River area is in southwestern Washington at the mouth of the Columbia River.&nbsp; The area encompasses several major estuaries and their adjacent highlands, which reach elevations of about 2,000 feet.&nbsp; Rainfall is abundant and produces heavy vegetation and deep weathering of the bedrock.&nbsp; Natural bedrock exposures are restricted to stream courses along larger drainages, although a network of logging roads provides excellent access to most of the area and widespread, but somewhat ephemeral, exposures of bedrock.</p> application/pdf 10.3133/i1832 en U.S. Geological Survey Geologic map of the Cape Disappointment-Naselle River area, Pacific and Wahkiakum counties, Washington reports