• Digital Terrain Model: (FGDC Metadata)
    2005 Digital Terrain Model Files Waukesha County, Wisconsin


  • DescriptionSampleFGDC Metadata
    Identification Information
    Citation:
    Citation Information:
    Originator: Aero-Metric, Inc., Sheboygan, Wisconsin, on behalf of Waukesha County Department of Parks and Land UsePublication Date: 2005
    Title: Waukesha County 2005 Digital Terrain Model Files
    Geospatial Data Presentation Form: vector digital data
    Publication Information: Publication Place: Waukesha, Wisconsin
    Publisher: Waukesha County Department of Parks and Land Use

    Description:
    Abstract: This data set contains point and line features of elevational information covering Waukesha County, Wisconsin. The three-dimensional files contain point features ("mass points") and line features ("break lines") that can be used to prepare terrain models and contour and depression maps. The digital terrain model (DTM) files were prepared at one-inch-equals-100-feet scale to support two-foot contour interval mapping. The DTM files are current as of Spring 2005 and are available in ESRI geodatabase format.
    Purpose: The digital terrain model files were originally compiled to enable topographic mapping and for the preparation of surface models using GIS software. This data set was collected to provide elevational information for use in county planning programs in Waukesha County and for regional planning activities in Southeastern Wisconsin.

    Time Period of Content:
    Time Period Information:
    Single Date/Time:
    Calendar Date: 2005
    Currentness Reference: Ground condition of aerial orthophotography used to prepare the digital terrain model files (2005)
    Status:
    Progress: complete
    Maintenance and Update Frequency: As needed
    Spatial Domain:
    Bounding Coordinates:
    West Bounding Coordinate: -88.5423
    East Bounding Coordinate: -88.0635
    North Bounding Coordinate: 43.19603
    South Bounding Coordinate: 42.84134
    Keywords:

    Theme:
    Theme Keyword Thesaurus: Wisconsin Land Information Program Thesaurus
    Theme Keyword: digital terrrain models
    Theme Keyword: DTM
    Theme Keyword: mass points
    Theme Keyword: break lines
    Theme Keyword: 3D
    Theme Keyword: surface model

    Place:
    Place Keyword Thesaurus: Counties and County Equivalents of the States of the United States and the District of Columbia (FIPS Pub 6-3)
    Place Keyword: Waukesha County

    Access Constraints: There are no legal prerequisites for accessing this data set. Potential users should contact the Waukesha County Department of Parks and Land Use.
    Use Constraints: Digital terrain model files should be used for their intended purpose and should not take the place of ground surveys for highly detailed requirements. The information and depictions herein are for informational purposes only and Waukesha County specifically disclaims accuracy in this reproduction and specifically admonishes and advises that if specific and precise accuracy is required, the same should be determined by procurement of certified maps, surveys, plats, Flood Insurance Studies, or other official means. Waukesha County will not be responsible for any damages which result from third party use of the information and depictions herein, or for use which ignores this warning.
    This data set was prepared from large-scale aerial orthophotography obtained in Spring 2005. This digital terrain model file data set may not reflect current conditions. Site investigation may be necessary to determine current ground conditions and elevational features.
    Data Quality Information
    Logical Consistency Report: The features in this data set were collected from aerial orthophotography utilizing stereo-photogrammetric methods. The digital map files in the data set were reviewed to insure that all features are correctly represented and properly symbolized. The files were also inspected to insure that all features are complete and correctly organized in the files.
    Completeness Report: This data set was compiled by a photogrammetric engineering firm under subcontract to the Southeastern Wisconsin Regional Planning Commission. To the best knowledge of the Waukesha County Department of Parks and Land Use and the Southeastern Wisconsin Regional Planning Commission, this data set includes all of the intended features acquired from the aerial orthophotography.
    Positional Accuracy:

    Horizontal Positional Accuracy:
    Horizontal Positional Accuracy Report: The digital terrain model files were prepared to meet National Map Accuracy Standards for one-inch-equals-100-feet scale mapping. Therefore, ninety percent or more of all well-defined planimetric features in the DTM files are within 3.3 feet of their true position on the ground.
    Vertical Positional Accuracy:
    Vertical Positional Accuracy Report: The digital terrain model files in this data set were prepared to meet National Map Accuracy Standards for one-inch-equals-100-feet scale, two-foot contour interval topographic mapping. Therefore, ninety percent or more of all elevational features in the DTM files are within 1.0 feet of their true vertical position.

    Lineage:
    Source Information:
    Source Citation:
    Citation Information:
    Originator: Aero-Metric, Inc., Sheboygan, Wisconsin
    Publication Date: 2005
    Title: Waukesha County 2005 Digital Terrain Model Files
    Geospatial Data Presentation Form: vector digital data
    Publication Information:
    Publication Place: Waukesha, Wisconsin
    Publisher: Waukesha County Department of Parks and Land Use

    Source Scale Denominator: 1200
    Type of Source Media: aerial photography acquired with a Digital Mapping Camera at a nominal elevation of 5,000 feet; horizontal and vertical control survey data; legacy DTM files Source Time Period of Content:

    Time Period Information:
    Single Date/Time:
    Calendar Date: 2005
    Source Currentness Reference: ground condition
    Source Citation Abbreviation: none
    Source Contribution: The digital terrain model files in this data set were obtained from the source aerial orthophotography, legacy DTM files, and control survey data.

    Process Step:
    Process Description: Waukesha County obtained complete countywide coverage of digital terrain model (DTM) files as part of various topographic mapping projects conducted between 1993 and 2000. These existing DTM files were updated by superimposing the data over new orthophoto imagery acquired in the spring of 2005. The data were viewed using stereo-photogrammetric techniques and areas of change between the legacy DTM data and the terrain shown on the 2005 imagery were identified. New digital terrain model features were collected for the areas of change and merged into the existing data files to create DTM files for the entire County current as of Spring 2005.
    Process Date: 2005
    Spatial Data Organization Information
    Direct Spatial Reference Method: Vector
    Point and Vector Object Information: SDTS Terms Description:
    SDTS Point and Vector Object Type: String
    Spatial Reference Information
    Horizontal Coordinate System Definition:
    Planar:
    Grid Coordinate System:
    Grid Coordinate System Name: State Plane Coordinate System 1927
    State Plane Coordinate System:
    SPCS Zone Identifier: 4803
    Lambert Conformal Conic:
    Standard Parallel: 42.733300
    Standard Parallel: 44.066700
    Longitude of Central Meridian: -90.00
    >Latitude of Projection Origin: 42.00
    False Easting: 2000000.000000
    False Northing: 0

    Planar Coordinate Information:
    Planar Coordinate Encoding Method: coordinate pair
    Coordinate Representation:
    Abscissa Resolution: 0.0001
    Ordinate Resolution: 0.0001
    Planar Distance Units: survey feet

    Geodetic Model:
    Horizontal Datum Name: North American Datum of 1927
    Ellipsoid Name: Clarke 1866
    Semi-major Axis: 6378206.400000
    Denominator of Flattening Ratio: 294.980000

    Vertical Coordinate System Definition:
    Altitude System Definition:
    Altitude Datum Name: National Geodetic Vertical Datum of 1929
    Altitude Resolution: 0.1
    Altitude Distance Units: feet
    Altitude Encoding Method: Explicit elevation coordinate included with horizontal coordinates
    Entity and Attribute Information
    Overview Description: Entity and Attribute Overview: This data set consists of a set of digital terrain model (DTM) files covering Waukesha County. Each file covers one U.S. Public Land Survey System township in the County, for a total of 16 DTM files in the data set. The files are in ESRI geodatabase format.

    Each geodatabase file contains the following three Feature Classes and features:
    1) Hard Break Lines -- distinct line features such as road edges and drainage lines
    2) Soft Break Lines -- indistinct line features such as ridge lines

    The files were prepared at one-inch-equals-100-feet scale for two-foot contour interval mapping. The DTM files are three-dimensional with line features encoded as "Polyline Z" shapes and point features encoded as "Point Z" shapes.

    Entity and Attribute Detail Citation: Information about the features included in this data set are contained in a table entitled "Digital Terrain Model Map Features" included in a mapping and orthophotography agreement between Waukesha County and the Southeastern Wisconsin Regional Planning Commission.
    Distribution Information
    Distributor:
    Contact Information:
    Contact Person Primary:
    Contact Person: Don Dittmar
    Contact Organization: Waukesha County Land Information Office
    Contact Position: Land Information Systems Coordinator
    Contact Address:
    Address Type: mailing and physical address
    Address: Waukesha County Administration Center, Department of Parks and Land Use, 515 W Moreland Boulevard 260
    City: Waukesha
    State or Province: Wisconsin
    Postal Code: 53188
    Contact Voice Telephone: 262-896-8270
    Contact Facsimile Telephone: 262-548-7042
    Contact Electronic Mail Address: ddittmar@waukeshacounty.gov
    Hours of Service: 8:00AM - 4:30PM (Central Time)
    Contact Instructions: If Don Dittmar is not available, contact Jim Landwehr at 262-548-7946 Resource
    Description: Waukesha County 2005 Digital Terrain Model Files
    Distribution Liability: The information and depictions herein are for informational purposes only and Waukesha County specifically disclaims accuracy in this reproduction and specifically admonishes and advises that if specific and precise accuracy is required, the same should be determined by procurement of certified maps, surveys, plats, Flood Insurance Studies, or other official means. Waukesha County will not be responsible for any damages which result from third party use of the information and depictions herein, or for use which ignores this warning. Standard Order Process:
    Digital Form:
    Digital Transfer Information:
    Format Name: ESRI geodatabase format
    Format Information Content: point and line features with elevational attributes
    Transfer Size: 1000
    Digital Transfer Option:
    Offline Option:
    Offline Media: CD-ROM
    Recording Capacity:
    Recording Density: 640
    Recording Density Units: megabytes
    Recording Format: ISO 9660 Level 3
    Fees: $50.00 per CD-ROM (Tax is included)
    Ordering Instructions: Written request identifying area.
    Turnaround: Approximately three working days
    Metadata Reference Information
    Metadata Date: 2005-11-11
    Metadata Contact:
    Contact Information:
    Contact Person Primary:
    Contact Person: Don Dittmar
    Contact Organization: Waukesha County Land Information Office
    Contact Position: Land Information Systems Coordinator
    Contact Address:
    Address Type: mailing and physical address
    Address: Waukesha County Administration Center, Department of Parks and Land Use, 515 W Moreland Boulevard, Room 260
    City: Waukesha
    State or Province: Wisconsin
    Postal Code: 53188
    Contact Voice Telephone: 262-896-8270
    Contact Facsimile Telephone: 262-548-7042
    Contact Electronic Mail Address: ddittmar@waukeshacounty.gov
    Hours of Service: 8:00AM - 4:30PM (Central Time)
    Contact Instructions: If Don Dittmar is not available, contact Jim Landwehr at 262-548-7946

    Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
    Metadata Standard Version: FGDC-STD-001-1998
    Generated by mp version 2.8.18 on Fri Nov 11 10:36:34 2005