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2017 Map of Cathlamet Bay

Name: 2017 Topographic Map of Cathlamet Bay
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

Cathlamet Bay and the intricate marshlands of the Columbia River dominate this 2017 survey east of Astoria. The landscape is a complex network of channels and tidal islands, including Mott Island, Grassy Island, and Russian Island. These landforms divide the river into distinct corridors like the North Channel, South Channel, and Prairie Channel, reflecting the dynamic estuarine environment where freshwater meets the Pacific influence.

On the southern shore, the community of Svensen serves as a focal point for local history and genealogy, anchored by the Svensen Pioneer Cem and the nearby Svensen Junction. The terrain rises from the riverbanks toward Fern Hill, cut by numerous watercourses such as the John Day River and Little Bear Cr. Transportation and infrastructure are evidenced by Karpens Airport and a dense web of local roads like Old US Hwy 30 and Burnside Loop, which trace the contours of the shoreline and interior valleys.