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2014 Map of Knappa

Name: 2014 Topographic Map of Knappa
Creator: U.S. Geological Survey
Published: 2014
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2014

About this map

The Columbia River dominates the northern reaches of this landscape, carving a complex network of islands and channels including Woody Island, Marsh Island, and Karlson Island. Near the water's edge, the settlement of Knappa serves as a focal point where the low-lying wetlands meet the rising timbered slopes of the coast range. The map details a unique amphibious geography where Marsh Island Light guides river traffic past Jim Crow Sands and the intricate bends of Devils Elbow.

Further inland, the transition from river economy to upland topography is marked by the presence of Maplewood Cem and Prairie Cem, providing valuable points of interest for those tracing local family histories. The southern portion of the sheet rises toward Wickiup Ridge, a sharp contrast to the tidal flats. Transportation patterns are defined by the timber-hauling route of the Big Creek Mainline and the agricultural corridors along Blind Slough and Grizzly Slough, reflecting the region's enduring ties to both the river and the forest.