{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "These contours were generated as a cartographic product for use in map production and spatial analyses. While they conform well with the base data from which they were generated, no effort was made to guarantee a specific level of contour accuracy.", "description": "

These contours were generated primarily from a 2014 LiDAR-based DEM dataset acquired by Oregon Metro. Historical LiDAR-based DEM data were used to augment the 2014 DEM as necessary to provide complete coverage for the Tualatin Watershed. The general contour generation process was: 1) Apply evenly weighted 5x5 smoothing to DEM via convolution function 2) Generate contours from smoothed DEM using gdal_contour utility 3) Split contours into 1000 ft segments 4) Remove contours with circumference less than 100 ft 5) Build geometry and attribute indices.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "summary": "These contours were generated as a cartographic product for use in map production and spatial analyses. While they conform well with the base data from which they were generated, no effort was made to guarantee a specific level of contour accuracy.", "title": "Contours - 2ft", "tags": [ "topography", "elevation", "cws", "topo", "contours", "clean water services" ], "type": "", "typeKeywords": [], "thumbnail": "", "url": "", "minScale": 150000000, "maxScale": 5000, "spatialReference": "", "accessInformation": "Clean Water Services", "licenseInfo": "

These contours were not assessed for absolute accuracy. The results of any design, planning, analysis or other work conducted using these data should be treated as approximate.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>" }