1998 Washington Department of Natural Resources (WADNR) 3-foot panchromatic orthophotography

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• What does this data set describe?
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  2. What geographic area does the data set cover?
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  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
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• How reliable are the data; what problems remain in the data set?
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Title:

1998 Washington Department of Natural Resources (WADNR) 3-foot panchromatic orthophotography

Abstract:

Three-foot panchromatic (black & white) orthophotography obtained from the Washington State Department of Natural Resources

Supplemental_Information:

In 1995, the Washington State Department of Natural Resources Division of Engineering, Resource Mapping Section, contracted for an aerial photo survey of King County and other northwest Washington counties.

The photos were taken from a flying height of 12,000 feet above average terrain level using a calibrated metric aerial camera with a 12-inch focal length yielding photos at a scale of 1:12000 (1 inch = 1000 feet).

Acquisition period was Summer, 1998. Individual frame or tile acquisition dates are not available.

Data points for portion of the original flight index with limited attributes regarding the metadata for the individual photos can be found in: "<http://www.metrokc.gov/gis/sdc/raster/ortho/Ortho1998WADNRPanPhotoIndex.xls>"

Original data was provided by the Originator in their tiling scheme. Data was retiled to standard tiling scheme for King County.

Data is available as TIFF and JPG2 compressed versions.

TIFF format data is available only at the base tiling level - idxp7500 - defined by a rectangular grid of cells with x-y dimensions of 7500 feet.

Primary user data is provided at second tier tiling level - idxptrmbr. This tiling level references the PLSS township-range grid with tiles buffered to a minimum-bounding rectangle of the township. Imagery at this level is provided only as compressed (compression ratio = 7, near lossless) imagery in JPG2000 format.

Imagery is also available as larger area mosaics at the idxpzone level (if appropriate) and as a highly compressed entire area of interest mosaic. Both the zone and entire area mosaic, called key region, is provided only as JP2 images.

1. How should this data set be cited?

   Washington State Department of Natural Resources, 1998, 1998 Washington Department of Natural Resources (WADNR) 3-foot panchromatic orthophotography: Washington State Department of Natural Resources, Olympia, WA.

   Online Links:

   • None

   Other_Citation_Details: None

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -121.500000

   East_Bounding_Coordinate: -121.100000

   North_Bounding_Coordinate: +47.800000

   South_Bounding_Coordinate: +47.100000

3. What does it look like?

4. Does the data set describe conditions during a particular time period?

   Beginning_Date: 1998

   Ending_Date: 1998

   Currentness_Reference: Ground condition

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: Digital raster data

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?

   2. What coordinate system is used to represent geographic features?

7. How does the data set describe geographic features?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Washington State Department of Natural Resources

2. Who also contributed to the data set?

3. To whom should users address questions about the data?

   Mike Leathers
   King County GIS Center
   GIS Data Coordinator
   201 S Jackson St
   Seattle, WA 98104
   USA
   

   206-263-4867 (voice)
   

Archival orthophotos for King County and some adjoining County areas. Coverage for King County is complete except for some ommissions in the eastern portion of King County.

1. From what previous works were the data drawn?

2. How were the data generated, processed, and modified?

3. What similar or related data should the user be aware of?

Are there legal restrictions on access or use of the data?

Access_Constraints:

Imagery is available for internal use by King County. Other interested parties should contact the Originator directly.

Use_Constraints: None

1. Who distributes the data set? (Distributor 1 of 1)

   Mike Leathers
   King County GIS Center
   GIS Data Coordinator
   201 S Jackson St
   Seattle, WA 98104
   USA
   

   206-263-4867 (voice)
   

2. What's the catalog number I need to order this data set?

   1998 WADNR Panchromatic Imagery

3. What legal disclaimers am I supposed to read?

   King County disclaims any warranty of use of any digital product or data beyond that for which it was designed.

4. How can I download or order the data?

Dates:

Last modified: 06-Oct-2003

Metadata author:

Mike Leathers
King County GIS Center
GIS Data Coordinator
201 S Jackson St
Seattle, WA 98104
USA

206-263-4867 (voice)
mike.leathers@metrokc.gov

Metadata standard:

FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)