WRD_Rivers_Medium_NE

This layer contains major rivers and lake centerlines located around the world. This polygon file is intended for medium scale thematic mapping and analysis.

            

              

                

                  

                    The spatial data were obtained from the Natural Earth website. The data originated primarily from the World Data Bank 2 with additions from other various sources, primarily imagery. 
                    
                      The data are suitable for making relatively generalized maps of countries and regions and are intended for use at a scale no larger than 1:50,000,000. 
                    
                    Attributes were modified to include scalerank, type, name, and note. . The coordinate system of this data is WGS 1984.
                  
                  

                    "Double line rivers in WDB2 were digitized to created single line drainages. All rivers received manual smoothing and position adjustments to fit shaded relief generated from SRTM Plus elevation data, which is more recent and (presumably) more accurate. Lake centerlines obtained by manually drawing connecting segments in reservoirs. When available, Admin 0 and 1 political boundaries in reservoirs serve as the lake centerlines. Ranked by relative importance. Includes name and line width attributes for creating tapered drainages. No additional geoprocessing was perfomed on this layer by the TTU CGST." - Natural Earth
                  
                
              
            
          

Center for Geospatial Technology, Texas Tech University
Natural Earth

There are no access and use limitations for this item.