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Pima County OPUS Control Points

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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 namePima County OPUS Control Points
File namepc_opus
Spatial domainPima County
Abstractpc_opus displays Pima County DOT Survey OPUS Control Points. Control points are established using GPS field surveys and post processed using NOAA's Online Positioning Users Service (OPUS).

Latitude and Longitude values in this layer are derived from the OPUS session sheets and can be seen using the OnBase document management system. See more information.
Known errors/qualificationsOPUS coordinate values are NAD83 2011. This GIS layer has been projected to our GIS Library standard NAD83 HPGN (HARN) projection. The layer's latitude and longitude fields are NAD83 2011 as copied from the OPUS results.
Feature typepoint
Feature count 1,431
Thumbnail Map pc_opus.pdf PDF file format   (574,909 bytes, PDF created 11/28/2022 )
ProjectionNAD83 HPGN (Parameters)
RectificationGPS
Field/value metadata Field metadata
Source organizationPima County DOT Survey Division
Source contactAndrew Iler
Source document or file name
Source date20160306
Source scale
Source formatDatabase
Date of last data update
(This date may not be current.)
20160306
Last data update byEric Krutzch
Date/time last touched - Meaning? 2022-11-28  01:03 AM - Enterprise GDB - Library input format
  2022-11-28  02:13 AM - Shapefile
  See coverage files, if any, for date.
LineageNew GIS Layer created March 6, 2017
On maintenance?Yes
Maintenance organizationPima County DOT Survey
Maintenance frequencyVaries
Maintenance descriptionAs new OPUS control points are established the Pima County DOT Survey Division adds them to the OnBase document management system along with a field sketch and OPUS session sheets.

This layer is derived from an OnBase database view and exported to the GIS Library by a special adTempus job.
Original conversion byJack Avis
Pima County ITD GIS contactJack Avis
Alternate Pima County ITD GIS contacte-mail address
On  Pima County Geospatial Data Portal? No

See Metadata Field Descriptions.
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