2017 Map of Knappa

About this map

The Columbia River dominates the northern reaches of this coastal landscape, where a complex network of channels and marshlands defines the river's approach to the Pacific. Low-lying landforms like Karlson Island, Marsh Island, and Horseshoe Island are separated by intricate waterways including Blind Slough and Prairie Channel. The settlement of Brownsmead sits amidst this alluvial terrain, connected by a web of local roads such as Penttila Rd and Fertile Valley Rd. To the south, the topography rises sharply toward Wickiup Ridge, showing the transition from riverine flats to timbered uplands.