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GIS Library Contents - Metadata

Urban Interface

Layer Thumbnail Map

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 nameUrban Interface
File nameurbnlite
Spatial domainPima County
AbstractUrbnlite shows urbanized areas as determined by nighttime lights. It was derived from the NOAA city lights layer (2001). The data layer was masked with a water bodies layer. Stan Wilds, srwilds@usgs.gov, has more detail. See more information.
Known errors/qualificationsIt appears that light blooming may limit the usefulness of this layer at Pima County scale. This is the same Urban Interface as found on the map at the GeoMAC site at http://www.geomac.gov
Feature typepolygon
Feature count 34
Thumbnail Map urbnlite.pdf PDF file format   (425,505 bytes, PDF created 07/21/2022 )
ProjectionNAD83 HPGN (Parameters)
Field/value metadata Field metadata
Source organizationUSGS/National Mapping Division
Source contactElizabeth Lile, ellile@usgs.gov
Source document or file nameurban.shp
Source date2001
Source scale
Source formatShape
Date of last data update
(This date may not be current.)
Last data update byJohn Regan
Date/time last touched - Meaning? 2021-01-07  10:56 PM - Enterprise GDB
  2021-01-07  10:37 PM - Shapefile - Library input format
  See coverage files, if any, for date.
On maintenance?No
Maintenance organization
Maintenance description
Original conversion byUSGS/National Mapping Division
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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