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BLM Arizona Imagery Mosaic

This metadata information is subject to our disclaimer. Metadata information presented here is maintained manually. Therefore, date-sensitive fields such as feature count and date of last update may not be up-to-date. All metadata is subject to errors inherent in a manual process.

Descriptive nameBLM Arizona Imagery Mosaic
File nameopdoq96b
Spatial domainArizona
AbstractThis is a monochrome 1990-1999 Arizona imagery mosaic from various sources and image types. This imagery is a composite believed to have been made by the BLM. The mosiac's images were taken from various sources including the USGS and from various special projects. Some USGS color infrared imagery was adapted by using only the green band to produce the monochrome image.

The mosaic includes over 8,000 DOQQ images. Each source image has between 50 and 300 meters of overedge image beyond the latitude and longitude corner crosses embedded in the image. The overedge has been clipped off and the images have been georeferenced to align with each other in a seamless mosaic grid. Due to variations in the individual photos, the seams are often visible. See more information.
Known errors/qualificationsWhile this layer is a useful state-wide image and represents the best that was available to make a state-wide image at the time it was assembled, one professional's opinion with knowledge of the project calls it "awful stuff", presumably because of the compositing of various types of images and the method used to convert some imagery to monochrome.
Feature typeraster
Feature count
Thumbnail Map
ProjectionNAD83 UTM (Parameters)
Field/value metadata Field metadata
Source organizationArizona State Cartographer's Office
Source contactGene Trobia
Source document or file name
Source date200211
Source scale
Source formatECW
Second source nameBLM GIS Incident Management Team
Second source contactDave Wilson dave_t_wilson@blm.gov
Second source document or file name
Second source date
Second source scale
Second source formatUnknown
Date of last data update
(This date may not be current.)
Last data update byJohn Dickinson
Date/time last touched - Meaning?   - The Enterprise GDB date was not found.
    - The Shapefile date was not found.
  See coverage files, if any, for date.
LineageThis layer was was assembled by the BLM GIS Incident Management Team and given to the Arizona State Cartographer's Office.
On maintenance?No
Maintenance organization
Maintenance description
Original conversion byBLM GIS Incident Management Team
Pima County ITD GIS contactJohn Dickinson
Alternate Pima County ITD GIS contacte-mail address
On  Pima County Geospatial Data Portal? No

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