There are also associated GPS data for trail bridges, backcountry campsites, and patrol cabins. This survey is intended to provide an accurate geographical coverage of trails within Yellowstone National Park for the purposes of maintenance and increased recreational enjoyment. Surveyed features include campsites, trails, trail bridges, NPS cabins, and spur trails. Data attributes were recorded on-site, during the GPS survey. Backcountry rangers from each ranger district also checked the attribute and location accuracy.
All arcs have complete topology.
All overshoots or undershoots have been corrected and all unnecessary dangles corrected. There are several trail segments within the Yellowstone National Park trail system which have not been surveyed as of August 2000. The areas that have not been checked by a backcountry ranger are the Gallatin and Tower subdistrict. The data produced from GPS field data are assumed to be spatially accurate to within 2-5 meters. Maximum PDOP was set to 6 and data were only collected when at least 4 satellites were readable.