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Land Subsidence & Aquifer-System Compaction: 1987-1998

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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 nameLand Subsidence & Aquifer-System Compaction: 1987-1998
File namesbsd8798
Spatial domainEastern Pima County
AbstractSBSD8798 displays land subsidence (and rebound) in 1" increments across the Tucson metro area and parts of Avra Valley and south-central Pinal County. This layer shows as "Figure 9" in the 2007 USGS report: "Land Subsidence and Aquifer-System Compaction in the Tucson Active Management Area, South-Central Arizona, 1987-2005". See more information.
Known errors/qualificationsSee USGS report for description of scattered data interpolation methods.
Feature typepolygon
Feature count 18
Thumbnail Map sbsd8798.pdf PDF file format   (424,078 bytes, PDF created 07/20/2022 )
ProjectionNAD83 HPGN (Parameters)
Field/value metadata Field metadata
Source organizationUSGS
Source contactDonald R. Pool
Source document or file name
Source date20071201
Source scale
Source formatGrid
Date of last data update
(This date may not be current.)
Last data update byMike List
Date/time last touched - Meaning? 2020-12-14  11:05 PM - Enterprise GDB
  2020-12-14  10:42 PM - Shapefile - Library input format
  See coverage files, if any, for date.
LineageUSGS provided a raster of interpolated subsidence values. One inch contours were drawn from this surface, smoothed, and built into polygons.
On maintenance?No
Maintenance organization
Maintenance description
Original conversion byMike List
Pima County ITD GIS contactMike List
Alternate Pima County ITD GIS contacte-mail address
On  Pima County Geospatial Data Portal? No

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