20230213 17405400 1.0 TRUE Joe Gordon Metro Data Resource Center 503-797-1587 503-797-1909 600 NE Grand Ave. Portland OR 97232 joe.gordon@oregonmetro.gov 20230201 ArcGIS Metadata 1.0 Metro Data Resource Center 503 797-1742 503 797-1909 600 NE Grand Ave. Portland OR 97232 drc@oregonmetro.gov No cost Shapefile 37 37 http://www.oregonmetro.gov/rlisdiscovery Email drc@oregonmetro.gov or call 503-797-1742 for further instructions. Contours 1993-01-01 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. <br /><br />Date of last data update: 2002-07-31 <br /><br />This is official RLIS data. <br /><br />Contact Person: <br />Joe Gordon <br />joe.gordon@oregonmetro.gov <br />503-797-1587 <br /><br />RLIS Metadata Viewer: <a href='https://gis.oregonmetro.gov/rlis-metadata/#/details/437' rel='nofollow ugc'>https://gis.oregonmetro.gov/rlis-metadata/#/details/437</a> <br /><br />RLIS Terms of Use: <a href='https://rlisdiscovery.oregonmetro.gov/pages/terms-of-use' rel='nofollow ugc'>https://rlisdiscovery.oregonmetro.gov/pages/terms-of-use</a> For general mapping purposes. http://library.oregonmetro.gov/rlisdiscovery/browse_graphic/contours.png 10 ft contour lines in brown on a gray basemap of the region for orientation. PNG Portland Multnomah County Washington County Clackamas County Oregon Contour topography elevation hypsography contour line RLISContourtopographyelevationhypsographycontour linePortlandMultnomah CountyWashington CountyClackamas CountyOregon This database and GIS data are made available under the RLIS Open Database End User License Agreement. See https://rlisdiscovery.oregonmetro.gov/pages/open-database-license. The information in this file was derived from digital databases on Metro's GIS. Care was taken in the creation of this file. Metro cannot accept any responsibility for errors, omissions, or positional accuracy. There are no warranties, expressed or implied. true -123.153528597 -122.367487422 45.70263875 45.23396470 Ground condition 2002-07-31 The data was generated from USGS Digital Line Graph files (DLG) and converted to ARC/INFO. Elevations were derived from major/minor pairs and the major/minor pairs were dropped. Contours are registered to the U.S. Geological Survey (USGS) 7.5 minute quadrangles. Control point positional accuracy is plus or minus 40 feet. Vertical datum is National Geodetic Vertical Datum 1929 (NGVD29. Metro and USGS contracted with AverStar (formerly Pacer/Infotec) to digitize the elevation lines from the 7 1/2 minute USGS quadrangle maps. 1992 Downloaded four new quads from USGS. Converted to ARC/INFO format. 1999-03 Projection information (.prj file), compatible with ArcGIS 8.1, was added to the layer. 2001-07-15 Contours.dbf Description of the contour line attributes. Elevation elevation in feet. NA