United States Geological Survey (USGS)Elevation lines from United States Geological Survey (USGS) 7.5 minute quadrangle maps. Contour interval is 10, 20 or 40 feet, depending on quad. As additional quads become available from USGS, the map extent will be expanded. Date of last data update: 2002-07-31 This is official RLIS data. Contact Person: Joe Gordon joe.gordon@oregonmetro.gov 503-797-1587 RLIS Metadata Viewer: https://gis.oregonmetro.gov/rlis-metadata/#/details/437 RLIS Terms of Use: https://rlisdiscovery.oregonmetro.gov/pages/terms-of-useArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/adf971bd93374c1b8846da88d8c2e541_0engRLIS DiscoveryPublicContours [Oregon--Portland]Web servicesOregon--PortlandOregonLast Modified: 2023-02-14