Identification_Information: Citation: Citation_Information: Originator: Computer Terrain Mapping, Inc. Publication_Date: 2005 Title: Alpine Loop Avalanche Hazard Geospatial_Data_Presentation_Form: map Description: Abstract: The Alpine Loop Avalanche Hazard data set shows the risk of avalanche on lands along the Loop. This data set is one of the development constraints used to determine (limit) the Development Potential. One of the most serious dangers to life and property within the Alpine Loop area is the hazard presented by avalanches. The Mountain Studies Institute (Silverton) web site documents that there have been 264 avalanche deaths between 1874 and 1991. A variety of data sources were combined to produce this data set, including mapping from the Colorado Geological Society, Colorado Avalanche Information Center and INSTAAR. Purpose: 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. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2003 Ending_Date: 2005 Currentness_Reference: Data were retrieved from various sources and analyzed between 2003 and 2005. See Data Quality Information for time information for source data. Status: Progress: Complete Maintenance_and_Update_Frequency: None Planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -107.8725478 East_Bounding_Coordinate: -107.2256611 North_Bounding_Coordinate: 38.08819806 South_Bounding_Coordinate: 37.73515861 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Conservation Theme_Keyword: Resources Theme_Keyword: Development Theme_Keyword: Avalanche Place: Place_Keyword_Thesaurus: None Place_Keyword: United States Place_Keyword: North America Place_Keyword: Colorado Place_Keyword: San Juan Mountains Place_Keyword: Ouray County Place_Keyword: San Juan County Place_Keyword: Hinsdale County Place_Keyword: San Miguel County Place_Keyword: Ouray Place_Keyword: Silverton Place_Keyword: Lake City Access_Constraints: None Use_Constraints: None. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Computer Terrain Mapping, Inc. Contact_Person: Ed Russell Contact_Position: President Contact_Address: Address_Type: mailing Address: PO Box 4982 City: Boulder State_or_Province: CO Postal_Code: 80306 Country: USA Contact_Voice_Telephone: 303.444.1670 Contact_Facsimile_Telephone: 303.443.4856 Contact_Electronic_Mail_Address: ctm@ctmap.com Hours_of_Service: 8:00-5:00 MT Data_Set_Credit: This data set is the product of a collaborative process between numerous agencies, organizations and interested individuals from the beautiful Alpine Loop region. Native_Data_Set_Environment: GRASS version 5 on Red-Hat Linux version 8.0 exported to an ASCII Grid Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Avalanche Hazard was determined from a variety of data sources of unknown accuracy. Most data sources were based on USGS 1:24,000 scale maps. Logical_Consistency_Report: Data are calculated from a variety of data sources of unknown accuracy. Only basic spot checking based on knowledge of terrain was performed. Completeness_Report: Although every effort was made to find avalanche information for the entire study area, there may be gaps due to lack of data. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Dale Atkins, Colorado Avalanche Information Center Publication_Date: 20011001 Title: CAIC/CDOT Avalanche Atlas Publication_Information: Publication_Place: Boulder Colorado Publisher: Colorado Avalanche Information Center Other_Citation_Details: CAIC is an abbreviation for Colorado Avalanche Information Center CDOT is an abbreviation for Colorado Department of Transportation Source is distributed on CD with map images based on USGS 1:24,000 scale maps. Type_of_Source_Media: CD Map Images Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1996 Ending_Date: 20011001 Source_Currentness_Reference: Start of study and publication date. Source_Citation_Abbreviation: CAIC Source_Contribution: Historic avalanche information and hazards. Source_Information: Source_Citation: Citation_Information: Originator: Arthur I. Mears, Colorado Geological Survey Publication_Date: 1979 Title: Colorado Snow - Avalanche Area Studies and Guidelines for Avalanche - Hazard Planning. Publication_Information: Publication_Place: Denver, Colorado Publisher: Colorado Geological Survey; Department of Natural Resources; State of Colorado Other_Citation_Details: Special Publication 7. Based on USGS 1:24,000 scale maps. Type_of_Source_Media: Paper Atlas Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1979 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Colorado Avalanche Studies Source_Contribution: Historic avalanche information and hazards. Source_Information: Source_Citation: Citation_Information: Originator: Rebecca Summer and Margaret Squier Publication_Date: 1976 Title: Avalanche Hazard Map, San Juan County Publication_Information: Publication_Place: Boulder, Colorado Publisher: Institute of Arctic and Alpine Research Other_Citation_Details: Adopted by San Juan County Commissioners Type_of_Source_Media: Paper maps Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1976 Source_Currentness_Reference: date received Source_Citation_Abbreviation: INSTAAR Source_Contribution: Avalanche hazards for San Juan County Source_Information: Source_Citation: Citation_Information: Originator: Betsy R. Armstrong Originator: Richard L. Armstrong Publication_Date: 1977 Title: Avalanche atlas, Ouray County, Colorado. Publication_Information: Publication_Place: Boulder, Colorado Publisher: University of Colorado Institute of Artic and Alpine Research Other_Citation_Details: Occasional Paper 25, 132 p. Based on USGS 1:24,000 scale maps. Type_of_Source_Media: Paper Atlas Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1977 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Ouray County Avalanche Atlas Source_Contribution: Historic Avalanche information for Ouray County Colorado. Source_Information: Source_Citation: Citation_Information: Originator: Leonard Miller Originator: Betsy R. Armstrong Originator: Richard L. Armstrong Publication_Date: 197601 Title: Avalanche atlas, San Juan County, Colorado. Publication_Information: Publication_Place: Boulder, Colorado Publisher: University of Colorado Institute of Artic and Alpine Research Other_Citation_Details: Occasional Paper 17, 232 p. Based on USGS 1:24,000 scale maps. Type_of_Source_Media: Paper Atlas Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 197601 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: San Juan County Avalanche Atlas Source_Contribution: Historic Avalanche information for San Juan County Colorado. Process_Step: Process_Description: Digitize paper and CD image map sources. Categorize avalanche chutes and runout zones. Convert to raster format with values 3 (high restriction of development potential due to avalanche hazard) for avalanche chutes, 2 (medium restriction of development potential due to avalanche hazard) for runout zones, 0 (no restriction of development potential) for areas of no hazard and no data value for areas of unknown hazard. Source_Used_Citation_Abbreviation: CAIC Source_Used_Citation_Abbreviation: Colorado Avalanche Studies Source_Used_Citation_Abbreviation: INSTAAR Source_Used_Citation_Abbreviation: San Juan County Avalanche Source_Used_Citation_Abbreviation: Ouray County Avalanche Atlas Process_Date: 2004 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 1256 Column_Count: 1863 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 13 Transverse_Mercator: Scale_Factor_at_Central_Meridian: .9996 Longitude_of_Central_Meridian: -105 00 00 Latitude_of_Projection_Origin: 00 00 00 False_Easting: 500000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 30.0 Ordinate_Resolution: 30.0 Planar_Distance_Units: METERS Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 (NAD83) Ellipsoid_Name: GRS 1980 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257222101 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Avalanche hazard grid cell Entity_Type_Definition: Any of the data elements in the avalanche hazard file Entity_Type_Definition_Source: author Attribute: Attribute_Label: Avalanche hazard grid cell value Attribute_Definition: The value describes the risk of avalanche with values 3 (high restriction of development potential due to avalanche hazard) for avalanche chutes, 2 (medium restriction of development potential due to avalanche hazard) for runout zones, or 0 (no restriction of development potential). Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 3 Attribute_Definition_Source: author Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Computer Terrain Mapping, Inc. Contact_Person: Ed Russell Contact_Position: President Contact_Address: Address_Type: mailing Address: PO Box 4982 City: Boulder State_or_Province: CO Postal_Code: 80306 Country: USA Contact_Voice_Telephone: 303.444.1670 Contact_Facsimile_Telephone: 303.443.4856 Contact_Electronic_Mail_Address: ctm@ctmap.com Resource_Description: Alpine Loop Spatial Analysis and Mapping Project Distribution_Liability: 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. Custom_Order_Process: Contact distributor to receive additional copies. Metadata_Reference_Information: Metadata_Date: 200504 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Computer Terrain Mapping, Inc. Contact_Person: Ed Russell Contact_Position: President Contact_Address: Address_Type: mailing Address: PO Box 4982 City: Boulder State_or_Province: CO Postal_Code: 80306 Country: USA Contact_Voice_Telephone: 303.444.1670 Contact_Facsimile_Telephone: 303.443.4856 Contact_Electronic_Mail_Address: ctm@ctmap.com Hours_of_Service: 8:00-5:00 MT Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998