1986 Map of Knappa

About this map

The Columbia River dominates this mid-1980s landscape, where the braided channels of the Lewis and Clark National Wildlife Refuge create a complex archipelago including Woody Island, Marsh Island, and Karlson Island. On the southern bank, the settlements of Knappa and Brownsmead represent a resilient riverfront economy defined by land reclamation and transportation. Extensive levee systems protect low-lying areas like Davis Bottom and Blind Slough, enabling agriculture and habitation in the floodplain.