Computer Terrain Mapping, Inc. 2005 map The Alpine Loop Historic Resources data set shows the distribution of historic resources on lands along the Loop. This data set is used to determine the Conservation Resource Value. The historical resources map was derived from information from the Colorado Historical Society (CHS) supplemented with revision from BLM personnel. The Alpine Loop Spatial Analysis and Mapping Project inventoried natural and cultural resources and identified important areas where overlapping resources occur. The results from this project will provide an opportunity for area stakeholders - landowners, outdoor enthusiasts, surrounding communities, federal government agencies and local and national preservation groups - to come together to find solutions that maintain the Alpine Loop experience for future visitors and residents, while working within the framework of landowner objectives as well as local and federal government goals. The Alpine Loop Spatial Analysis and Mapping Project analyzed the Alpine Loop landscape, considering important natural and cultural resources along with the likelihood of development based upon building constraints. The Project aims to provide a planning tool for area stakeholders as they consider the variety of land management options and the future of this magnificent region. The next logical step will be to craft solutions that work within the framework of landowner desires, local and federal government land management goals, and available financial and technical resources to manage the area in a way that preserves the Alpine Loop experience for future generations. While the Alpine Loop lies within three counties - San Juan, Hinsdale and Ouray - the analytical work extended into a portion of San Miguel County. The resulting mapping and analyses will: 1. Create a spatial foundation to aid future projects in the Alpine Loop corridor; 2. Serve as a prioritization tool for evaluating the conservation potential of individual private parcels; 3. Provide the necessary framework for pursuing future funding opportunities. 2003 2005 Data were retrieved from various sources and analyzed between 2003 and 2005. See Data Quality Information for time information for source data. Complete None Planned -107.8725478 -107.2256611 38.08819806 37.73515861 None Conservation Resources Historic None United States North America Colorado San Juan Mountains Ouray County San Juan County Hinsdale County San Miguel County Ouray Silverton Lake City None None. Computer Terrain Mapping, Inc. Ed Russell President mailing

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Boulder CO 80306 USA 303.444.1670 303.443.4856 ctm@ctmap.com 8:00-5:00 MT This data set is the product of a collaborative process between numerous agencies, organizations and interested individuals from the beautiful Alpine Loop region. GRASS version 5 on Red-Hat Linux version 8.0 exported to an ASCII Grid Historic resources were determined from a variety of data sources of unknown accuracy. Data are calculated from a variety of data sources of unknown accuracy. Only basic spot checking based on knowledge of terrain was performed. Historic resources were calculated for the entire study area. Colorado Historical Society 20021209 Denver, Colorado Colorado Historical Society CHS is an abbreviation for Colorado Historical Society. Historic Sites are specified by UTM coordinates that represent the center of areas 10 acres or less. Historic Sites greater than 10 acres have multiple UTM coordinates that define a bounding polygon. digital 20021209 Publication date CHS Locations of historic sites. CHS data were converted to GIS format. Sites were rasterized with buffers of varying size. 250m buffers were used for those sites that are on the National or State historic register. These sites were also assigned a high resource value (3). 100m buffers were used for those sites that were determined to be eligible for the National or State register. These sites were also assigned a medium resource value (2). All other sites were given a 50m buffer and assigned a low (1) resource value. This scheme was altered based upon input from BLM personnel. CHS 2004 Raster Grid Cell 1256 1863 Universal Transverse Mercator 13 .9996 -105 00 00 00 00 00 500000 0 coordinate pair 30.0 30.0 METERS North American Datum of 1983 (NAD83) GRS 1980 6378137 298.257222101 Historic resource grid cell Any of the data elements in the historic resource map author Historic grid cell value The value describes the historic resources value at any locale. 3 - high value; 2 - medium; 1- low; 0 - no resource mapped at this site. author 0 3 Computer Terrain Mapping, Inc. Ed Russell President mailing

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Boulder CO 80306 USA 303.444.1670 303.443.4856 ctm@ctmap.com Alpine Loop Spatial Analysis and Mapping Project Computer Terrain Mapping, Inc. (CTM) provides this data set as is. CTM makes no guarantee or warranty concerning the accuracy of information contained in the data. CTM further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although this data has been processed successfully on computers at CTM, no warranty, expressed or implied, is made by the CTM regarding the use of this data on any other system, nor does the fact of distribution constitute or imply any such warranty. Contact distributor to receive additional copies. 200504 Computer Terrain Mapping, Inc. Ed Russell President mailing

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Boulder CO 80306 USA 303.444.1670 303.443.4856 ctm@ctmap.com 8:00-5:00 MT FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998