Dataset Record: Black and White 2000 Digital Orthophotos, Twin Cities Metropolitan Area

Footprint drawn from bounding box coordinates            
Data Type: Imagery
Source: Aerial
Type: Black amd white
Nominal post spacing: ---
Rectification: Ortho rectified
Data collection start date: May 1, 2000
Data collection end date: May 2, 2000
Update frequency: As needed
Distribution restrictions: Yes, with some restrictions
License: License required
Surface description: ---
Datum, vertical: ---
Datum, horizontal: NAD 83 - North American Datum of 1983
Ellipsoid: GRS - Geodetic Reference System of 1980
Break lines: ---
Ground resolution: 0.6 Meters
Vertical accuracy: No response provided
Test of vertical accuracy: No response provided
Horizontal accuracy: Yes- 33 Feet
Test of horizontal accuracy: No
Control monuments: No response provided
Data formats (file size):
  • GeoTIFF - Geographic Tag Image File Format (500 Mb to less than 100 Gigabyte)
  • MrSID - Multi-resolution Seamless Image Database (500 Mb to less than 100 Gigabyte)
Footprint: See map to right
Metadata: Yes
Metadata standard: Minnesota Geographic Metadata Guidelines
Identifier: No response provided
Notes: This dataset contains 267 black and white digital orthophoto quarter-quadrangles (DOQs), 3.75' x 3.75', covering the 7 county Twin Cities (Minneapolis and St. Paul) Metropolitan Area in Minnesota. Each CD-ROM contains up to 4 quarter-quadrangles of a USGS 7.5 minute quadrangle, where a quarter-quadrangle is included IF it's coverage includes any portion of the Twin cities 7 county area. The orthophotos are in UTM, Zone 15, NAD83 projection. Each image is approximately 115 Mb, with a .6 meter image pixel, and available in TIFF format. There are a total of 78 CD-ROMs. These orthophotos were produced using the USGS DOQ specifications except for the file format and the scan resolution (pixel size is .6m rather than 1 meter). The original imagery was collected at 20,000 ft. and centered on USGS quarter-quads.

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