• Aerial Photography:

    1941 Aerial Photography Waukesha County, Wisconsin

  • wauk1941
  • Identification Information
    Citation 
    Citation Information:Originator: Ayres Associates
    Publication Date: REQUIRED: The date when the data set is published
    Title: 1941 Aerial Photography Waukesha County, Wisconsin
    Geospatial Data Presentation Form: remote-sensing image 

    Description:
    Abstract: This data set consists of digital aerial photo images obtained from 1"=1667' scale black and-white negatives aquired in the spring of 1941. The pixel resolution of the 400-scale imagery is one foot on the ground. The images are in a single county-wide file in MrSID compressed format with the accompanying sid "world" (sdw) files.
    Purpose: Dataset was created to provide historical imagery record for Waukesha County.

    Time Period of Content
    Time Period Information: Single Date/Time:Calendar Date: 1941
    Time of Day: Unknown
    Currentness Reference: ground condition

    Status
    Progress: Complete
    Maintenance and Update Frequency: None planned

    Spatial Domain
    Bounding Coordinates:

    West Bounding Coordinate: -88.546944
    East Bounding Coordinate: -88.057768
    North Bounding Coordinate: 43.199775
    South Bounding Coordinate: 42.835167

    Keywords:
    Theme:

    Theme Keyword Thesaurus:
    REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords.
    Theme Keyword: Aerial Photography data set.
    Theme Keyword: Historic Aerial Photography

    Access Constraints: None
    Use Constraints: The information and depictions herein are for informational purposes 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.

    Point of Contact:
    Contact Information:
    Contact Organization
    Primary: Contact Organization: Ayres Associates
    Contact Address:
    Address Type: mailing and physical address
    Address: 1802 Pankratz StreetCity: Madison
    State or Province: Wisconsin
    Postal Code: 53704-4069
    Country: United States
    Contact Voice Telephone: (608) 443-1200
    Contact Facsimile Telephone: (608) 443-1250

    Data Set Credit: National Archives & Records Administration and USDA.Native
    Data Set Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.3.0.800

    Data Quality Information
    Section Index

    Positional Accuracy:
    Horizontal Positional Accuracy:

    Horizontal Positional Accuracy Report:
    The horizontal positional accuracy of the data varies depending on terrain and the quality of image control points common to the historic imagery and the control data set. Generally the image data is accurate to approximately +/- 40 feet horizontally though there may be instances where the imagery does not meet this standard.

    Lineage:
    Source Information:

    Source Citation:
    Citation Information:
    Originator: Ayres Associates
    Publication Date: REQUIRED: The date when the data set is published
    Title: 1941 Aerial Photography Waukesha County, Wisconsin
    Geospatial Data Presentation Form: remote-sensing image
    Online Linkage: \\MD5794\D$\ttttemp\Wauk_1941.sid 
    Source Time Period of Content:
    Time Period Information:
    Single Date/Time:
    Time of Day: Unknown
    Source Contribution: Aerial photography was provided by the National Archives & Records Administration Photography and was flown by the USDA at a 1 inch =1667 feet negative scale. scale in 1941.

    Process Step:
    Process Description:
    Aerial photography film negatives were scanned on a photogrammetric scanner at a 15-micron scanning rate scan rate. To georeference the digital images, Ayres Associates selected a minimum five control points for each image. Year 2000 SEWRPC digital orthophotography for Waukesha County was used as the control data set. The best common points within the control source data and the historical image data were selected. Commonly used features included roads, fence lines, structures, utility features, and a number of other manmade and natural features. Once control data was selected for each image the image was georeferenced using a projective method. The images were processed to the control points using Z/I Imaging software. When processing was completed for each project year, orthophotography technicians proceeded with the final processing including mosiacing, tone balancing, editing, and tiling.
    Cloud Cover: 0
    Spatial Data Organization Information - Section Index
    Direct Spatial Reference Method: Raster
    Raster Object Information:
    Raster Object Type: Pixel
    Row Count: 130303
    Column Count: 128200
    Vertical Count: 1
    Spatial Reference Information - Section Index
    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: 42.733333
    Standard Parallel: 44.066667
    Longitude of Central Meridian: -90
    Latitude of Projection Origin: 42
    False Easting: 2000000
    False Northing: 0

    Planar Coordinate Information:
    Planar Coordinate Encoding Method: Coordinate Pair
    Coordinate Representation:
    Abscissa Resolution: 1
    Ordinate Resolution: 1
    Planar Distance Units: survey feet
    Geodetic Model:
    Horizontal Datum Name: North American Datum of 1927
    Ellipsoid Name: Clarke 1866
    Semi-major Axis: 6378206
    Denominator of Flattening Ratio: 294.9786982
    Entity and Attribute Information - Section Index
    Detailed Description:
    Entity Type:
    Entity Type Label: Band_1
    Attribute:
    Attribute Label: Count
    Attribute:
    Attribute Label: ObjectID
    Attribute Definition: Internal feature number.
    Attribute Definition Source: ESRI
    Attribute Domain Values:
    Unrepresentable Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
    Attribute Label: Value
    Distribution Information - Section Index
    Distributor:
    Contact Information:
    Contact Person Primary:
    Contact Person: Don Dittmar
    Contact Organization: Waukesha County Land Information Office (WCLIO)
    Contact Position: Land Information Systems Coordinator
    Contact Address:
    Address Type: mailing and physical address
    Address: Waukesha County Administration Center, Parks and Land Use Dept. Rm. 260, 515 W Moreland BoulevardCity: Waukesha
    State or Province: Wisconsin
    Postal Code: 53188Country: United States
    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: Downloadable Data
    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:
    SID
    Format Version Number: MRSID
    Format Specification: Original GeoTiff files were compressed to township tiled MRSID format files. MRSID is a proprietary compression format viewable with most GIS softwares.
    Digital Transfer Option:
    Online Option:
    Access Instructions:
    Data can be transferred at the same cost using FTP methods upon request. Please indicate method on Data Request Form.
    Fees: $50.00 per CD-ROM (Tax is included)
    Ordering Instructions: Written request identifying area.
    Turnaround: Approx. 3 working days
    Metadata Reference Information - Section Index
    Metadata Date: 12/17/2004
    Metadata Review Date: 12/17/2005
    Metadata Future Review Date:
    Metadata Contact:
    Contact Information:
    Contact Organization Primary:

    Contact Organization: Ayres Associates
    Contact Address:
    Address Type: mailing and physical address
    Address: 1802 Pankratz Street
    City: Madison
    State or Province: Wisconsin
    Postal Code: 53704-4069
    Country: United States
    Contact Voice Telephone: (608) 443-1200
    Contact Facsimile Telephone: (608) 443-1250
    Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
    Metadata Standard Version: FGDC-STD-001-1998
    Metadata Time Convention: local time
    Metadata Extensions:
    SMMS Metadata report generated Thursday, 30/December/2004