Alpine Loop Floodplains

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Computer Terrain Mapping, Inc.

Publication_Date: 2005

Title: Alpine Loop Floodplains

Geospatial_Data_Presentation_Form: map

Description:

Abstract:

The Alpine Loop floodplains data set shows floodplains along the Loop. This data set is one of the development constraints used to determine Development Potential.

Floodplains were digitized from the Federal Emergency Management Agency (FEMA) Flood Insurance Rate Maps (FIRM).

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: Development

Theme_Keyword: Floodplains

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: Determined from a variety of data sources of unknown accuracy.

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:

Floodplains were digitized for all portions of the study area covered by FIRM mapping. There may be areas with floodplain issues not included in this mapping.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: National Flood Insurance Program

Publication_Date: 1978 - 1988

Title: FEMA Flood Insurance Rate Map

Publication_Information:

Publication_Place: Unknown

Publisher: Federal Emergency Management Agency

Geospatial_Data_Presentation_Form: map

Other_Citation_Details:

FEMA is an abbreviation for Federal Emergency Management Agency. Maps identify areas of 100 and 500 year flooding and rank the hazard (flood level) in the flood area. Different regions mapped had different publication and time periods.

Type_of_Source_Media: digital data

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1974

Ending_Date: 1988

Source_Currentness_Reference: Earliest initial identification to latest final revision.

Source_Citation_Abbreviation: FEMA Flood

Source_Contribution: Floodplain areas.

Process_Step:

Process_Description:

Digitize FEMA Flood maps in the study area. Classify as 3 for 100-year flood areas with average depth of 1 foot or more, 2 for 500-year flood areas and 100-year areas with average depth of less than 1 foot or protected by levees, and 0 for areas with no known flood hazard.

Source_Used_Citation_Abbreviation: FEMA

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: Floodplain grid cell

Entity_Type_Definition: Any of the data elements in the floodplains map

Entity_Type_Definition_Source: author

Attribute:

Attribute_Label: floodplain cell value

Attribute_Definition:

The value represents whether the area is in a hazardous floodplain. The value of 3 (high reduction of development potential due to floodplains) is used for 100-year flood areas with average depth of 1 foot or more, 2 (moderate reduction of development potential) for 500-year flood areas and 100-year areas with average depth of less than 1 foot or protected by levees, and 0 (no reduction of development potential) for areas with no known flood hazard.

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