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Attached is an image of the Avra valley in Southern Arizona, USA from

Effects of Kriging and Inverse Modelling on Conditional Simulation of the Avra Valley Aquifier in Southern Arizona -- Clifton and Neuman

Two related questions

  1. What is this R{int}E-T{int}S coordinate system? Is it US specific? Arizona specific? A reference and how to convert to a global system would be great.
  2. Is there somewhere where I can find a shape file for the designated region? I'm assuming this particular example has been used in several studies.

Thanks!

enter image description here

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  • $\begingroup$ it is the position,if you google T12S R11E you will find maps of the area. $\endgroup$ Commented Sep 20, 2019 at 11:42
  • $\begingroup$ Questions for data are more suited for OpenData.SE, questions for coordinate systems are slightly more suited for GIS.SE. Two questions in one is not suited for SE in general. $\endgroup$
    – Erik
    Commented Sep 20, 2019 at 13:46
  • $\begingroup$ T = township, R = range. Part of the PLSS, public land survey system. $\endgroup$
    – mkennedy
    Commented Sep 21, 2019 at 0:03
  • $\begingroup$ Thank you both. @Erik get over yourself buddy, everyone else have a good day $\endgroup$
    – Nadiels
    Commented Sep 21, 2019 at 17:49
  • $\begingroup$ @Nadiels Dude, I pointed you some places you might find more extensive help and you bitch at me? Really? $\endgroup$
    – Erik
    Commented Sep 22, 2019 at 14:22

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