Knappa Slough
connects to
Prairie Channel
Blind Slough (Columbia River)
Warren Slough
Big Creek Slough
Calendar Slough
gnis feature
https://edits.nationalmap.gov/apps/gaz-domestic/public/gaz-record/1122810
island
Karlson Island
OpenStreetMap
https://www.openstreetmap.org/way/456093816
random
Israeli Declaration of Independence
slough in
Columbia River
Clatsop County, Oregon
Oregon
slough of
Karlson Island
tags
slough
no Wikidata record
tributaries
Big Creek (Knappa Slough tributary)
Fertile Valley Creek