Columbia County elevation and terrain tools
Portland Metro • County seat: St. Helens
Columbia County lies along the lower Columbia River north of Portland, with low river bottomland, sloughs and islands on its eastern edge. Westward the ground rises into the forested hills of the northern Coast Range.
Open the mapLidar coverage
Lidar projects that cover St. Helens, from the USGS 3DEP index and DOGAMI’s project records. Other parts of the county may come from other projects; the coverage guide explains how to check any spot.
Coverage details are temporarily unavailable.
Property boundaries
The county assessor’s parcel service for Columbia County is not available in the Property tool yet, so taxlots cannot be selected here. Draw your area on the map instead; the parcel lines overlay still shows taxlot lines.
Tools for Columbia County
A PDF terrain report for a taxlot: hillshade, contours, slope and elevation statistics.
How the tool worksContour lines at the interval you choose, on the map and as vector files.
How the tool worksHours of direct sun on any day of the year, with shadows cast by the terrain.
How the tool works