Underwater Topography Map
COLUMBIA RIVER, LOWER – UPDATES JUNE 2017:
•AREA 1, mouth of the Columbia River: Major improvement to the underwater topography depths in this area.
•Satellite imagery used to update the outline of the river, shoals and sloughs throughout the map. COLUMBIA RIVER, LOWER - Bonneville Dam to Pacific Ocean, including Portland, Oregon
10 foot underwater depth contours
Suggested Fish Locations + Fishing Strategy
Multiple GPS coordinates provided.
Fish-n-Map Company's GPS coordinates are attached to various structural elements which have the potential of holding fish - depending on the season, water elevation, etc. These GPS coordinates are available in gpx format for downloading into chart plotters, fish finders and hand held devices. See "Columbia River, Lower - gpx formatted gps coordinates" if interested.
MADE IN THE U.S.A.