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Show elevation at 20 ft intervals, based off of 1/3 arc angle DEM.<\/SPAN><\/P><\/DIV>", "summary": "Show elevation at 20 ft intervals, based off of 1/3 arc angle DEM.", "title": "Contours 20", "tags": [ "topography", "topographic", "elevation" ], "type": "", "typeKeywords": [], "thumbnail": "", "url": "", "minScale": 150000000, "maxScale": 5000, "spatialReference": "", "accessInformation": "USGS", "licenseInfo": "", "portalUrl": "" }