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100 foot contours for the Portland, Oregon metro area Elevation lines from United States Geological Survey (USGS) 7.5 minute quadrangle maps. Contour interval of 100 feet is derived from Contours shape file. Tags: contour, contour line, elevation, hypsography, topography Hypsographic map of California A hypsographic map of California with elevation intervals ranging from 1000 to 4000 ft. Projected from original shapefile in lat/long . Elevation polygons: 0-1000 ft, 1001-3000 ft, 3001-7000 ft, 7001-11000 ft, and 11000 ft. Tags: california, elevation, hypsography, topographic lines 10 foot contours of the Portland, OR metro area 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. Tags: contour, contour line, elevation, hypsography, topography