Wyoming Roads (2009) By Michael S. O'Donnell, Tammy S. Fancher, Aaron T. Freeman, Abra E. Ziegler, Zachary H. Bowen, and Cameron L. Aldridge 2014 U.S. Geological Survey Authors: Michael S. O'Donnell, Tammy S. Fancher, Zachary H. Bowen, and Cameron L. Aldridge Cherokee Services Group, Fort Collins, Colo. Authors: Aaron T. Freeman, Abra E. Ziegler, U.S. Geological Survey Data Series 821 ABSTRACT: The U.S. Geological Survey Fort Collins Science Center created statewide roads data for the Bureau of Land Management Wyoming State Office using 2009 aerial photography from the National Agriculture Imagery Program. The updated roads data resolves known concerns of omission, commission, and inconsistent representation of map scale, attribution, and ground reference dates which were present in the original source data. To ensure a systematic and repeatable approach of capturing roads on the landscape using on-screen digitizing from true color National Agriculture Imagery Program imagery, we developed a photogrammetry key and quality assurance/quality control protocols. Therefore, the updated statewide roads data will support the Bureau of Land Management’s resource management requirements with a standardized map product representing 2009 ground conditions. The updated Geographic Information System roads data set product, represented at 1:4,000 and +/- 10 meters spatial accuracy, contains 425,275 kilometers within eight attribute classes. The quality control of these products indicated a 97.7 percent accuracy of aspatial information and 98.0 percent accuracy of spatial locations. Approximately 48 percent of the updated roads data was corrected for spatial errors of greater than 1 meters relative to the pre-existing road data. Twenty-six percent of the updated roads involved correcting spatial errors of greater than 5 meters and 17 percent of the updated roads involved correcting spatial errors of greater than 9 meters. The Bureau of Land Management, other land managers, and researchers can use these new statewide roads data set products to support important studies and management decisions regarding land use changes, transportation and planning needs, transportation safety, wildlife applications, and other studies. DISCLAIMERS: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this information product, for the most part, is in the public domain, it also contains copyrighted materials as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the copyright owner. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. This data base, identified as DS 782, has been approved for release and publication by the Director of the U.S. Geological Survey. Although this database has been subjected to rigorous review and is substantially complete,the U.S. Geological Survey reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the U.S. geological Survey nor the U.S. Government may be held liable for any damages resulting from its authorized or unauthorized use. CONTENTS: 00Readme.txt DS821_WyomingRoads2009.txt DS821_WyomingRoads2009.xml datafiles: GIS_Data (DS821_WyomingRoads2009.gdb) 1. WY_Roads_2009: feature class representing road centerlines and its associated FGDC compliant metadata in XML format (and ArcGIS internal FGDC format). 2. WY_Roads_2009_Topology: feature class topology used to validate WY_Roads_2009. We provide this data set because it demonstrates that we addressed all topology exceptions (no topology errors are represented in the topology rule set) and so data users can maintain the same topology rules if updating the data. INSTRUCTIONS AND DOCUMENTATION FOR U.S. GEOLOGICAL SURVEY DATA SERIES 821 To access the data: The data files can be downloaded via the web from http://pubs.usgs.gov/ds/821/. A product description is avialable as a Portable Document Format (.pdf) pamphlet which requires Adobe Acrobat for viewing. Acrobat software runs on a variety of systems, and is available for download free of charge from Adobe at http://www.adobe.com. Software Recommended: Adobe Acrobat (8.x, 9.x, or X), or Adobe Acrobat Pro (8.x, 9.x X), or the free Adobe Reader (8.x, 9.x X), X is preferred. ArcGIS 10.x preferred, older and newer versions may also work. Additonal free software that allow users to read these files include: File Geodatabase API (http://www.esri.com/apps/products/download/) and ArcGIS Explorer Desktop (http://www.esri.com/apps/products/download/).