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Pinal Regional Model

Pinal Model History and Timeline

                                                    

 

Pinal MODFLOW model development began in the late 1980's. Previous to the late 1980's, no numeric groundwater models within the Pinal AMA had been developed. Thomas Anderson (1968) developed an electric analog model simulating the groundwater depletion of Central Arizona between 1923 and 1964. Since the first ADWR Pinal MODFLOW release in 1990 the model has not been updated. The challenge in developing a model within the Pinal AMA is lack of measured data. The original ADWR MODFLOW model relied on data provided through a report by Hardt and Cattany entitled "Basic Groundwater Data for Western Pinal County"(1964).

In October 2007 the Pinal AMA MODFLOW model began the initial phase of update that included both the steady state (circa 1900) and the transient model (1922-2009). The Pinal model geology update was completed in 2010 and the updated modeling report that includes the simulation of subsidence was completed in 2014.

Pinal Model Location

 

Pinal Model Map
       Pinal Model Map

The Pinal model grid encompasses approximately 1,575 square miles. [1.6MB pdf] Adobe File

 

Pinal Model Datasets

  • Model Files Referenced in ADWR Modeling Report No. 26
    • 1922 to 2009 ADWR Calibrated Transient Pinal Model Modflow Datasets [150MB zip]
     
  • Pinal Modeling Report No. 26 Geodatabase
    • Steady State to 2009 ADWR Calibrated Spatial Datasets (ESRI GDB) [185MB zip]
     
  • Model Files Referenced in ADWR Modeling Report No. 02
    • 1985 to 1988 ADWR Calibrated Transient Pinal Model MODFLOW Datasets [40KB zip]

Pinal Model Reports and Documents

  • Regional Groundwater Flow Model of the Pinal Active Management Area, Arizona.
    Modeling Report No. 26 (2014)

          [Report 64 MB pdf] Acrobat Icon PDFs 

  • Regional Groundwater Flow Model of the Pinal Active Management Area: Provisional Report - Geology Update.  Modeling Report No. 20 (2010)

          [Report 63 MB pdf] Acrobat Icon PDFs  [Access Database ZIP file 283KB] ZIP Icon

 

  • Regional Groundwater Flow Model Phase One: Hydrogeologic Framework, Water Budget, and Phase One Recommendations. Wickham and Corkhill. Modeling Report No. 01 (1989) [9.4MB pdf] Adobe File
 
  • Pinal Active Management Area Regional Groundwater Flow Model Phase Two: Numerical Model, Calibration Sensitivity, and Recommendations. Corkhill and Hill . Modeling Report No. 02 (1990) [69MB pdf] Adobe File
 
  • Pinal Active Management Area Second Management Plan, Simulation of Water Use Scenarios Utilizing The Pinal AMA Regional Groundwater Flow Model. Corkhill and Plato. Modeling Report No. 04 (1992) [2.8MB pdf] Adobe File
 
  • Professional Review of the Pinal Active Management Area's Groundwater Budget. Burgess & Niple (2004) [4.9MB pdf] Adobe File


Questions?

      Contact the ADWR Modeling Unit ([email protected] )

 
 





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