To derive contour lines of 5 and 10 meters, the data were locally complemented with other sources, namely national DTM and digitised topographical maps. The Digital Terrain Model, MONA PRO Europe, is a copyrighted product provided by Geosys Data. Data sourcesĮUROSION was a project commissioned by the General Directorate Environment of the European Commission 2002-2004. However, most of contour lines are copyright-free and publicly available. Dissemination outside the European Commission is restricted to raster representations (i.e. A multi-posts "agency" license has been acquired for the European Commission, which makes the product available for applications developed within the European Commission. Its geometrical accuracy in x,y and z does not exceed 5 meters for lowlying areas and 15 meters for mountainous areas. The resolution of grid data is 90 to 100 meters. It is strongly advised not to use it for geoprocessing or statistical purposes. In this example, Contour Interval is specified as 100.ĭefine the space between two contour lines using either the static (by specifying the Contour Interval field) or dynamic (by specifying the Number of Contours field) value.Geographic accuracy: This dataset has errors in the 5 m contourline. Specify either the Number Of Contours or Contour Interval field to determine the space between two contour lines.If Z Base is specified as 1,434, the 100 increment starts from this value, that is, 1,534, 1,634, 1,734, and so forth. For a study area with a minimum elevation of 1,434 meters and a contour interval of 100, maintaining the default Z Base value creates increments of 100s, starting from the next nearest hundredth, that is, 1,500, 1,600, 1,700, and so forth. The default value of Z Base is 0, which represents the mean sea level. Base Contour - Sets the value on which all contours are based. In this example, it is 1,434 meters, as this is the lowest elevation in the study area. Contour Interval - Sets the spacing (difference in value) between contours. For Z Base, specify the base contour value.For Contour Type, ensure the default Contour lines option is selected.For Raster, specify the desired single-band raster layer.Refer to ArcGIS Pro: Contour function - Parameters for more information on parameter settings. Configure the Contour Properties pane.Contour lines that are shown are evenly divisible by the contour interval. Interval will be dependent on terrain and purpose of the survey or map. A contour layer with 100-meter intervals is drawn on the map.ĭEM layer of Boulder, Colorado and its surrounding area. CONTOUR INTERVALS The vertical distance between contour lines. The study area shows elevations between 1,434 and 3,200 meters above sea level. The images below show a digital elevation model (DEM) and triangulated irregular network (TIN) layer of Boulder, Colorado and its surrounding area. Tool or functionĭata of contour lines are available in the attribute table? The table below lists the tools and functions to create a contour layer. It is used to represent the distribution of z-values (elevations, concentrations) throughout. In ArcGIS Pro, existing tools and functions can be used to create contour lines, depending on the input and the desired output data. The Contour Lines layer is offered in many RockWorks map windows. This is useful in identifying suitable locations for projects, such as estimating water storage capacity, or approximating the volume of excavation work. How To: Create contour lines in ArcGIS Pro SummaryĬontour lines help visualize surface topology by creating line connecting points with an equal elevation above or below a standard level.
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