• [2013-08-26] Study forecasts future water levels of crucial agricultural aquifer
  + http://www.sciencedaily.com/releases/2013/08/130826180523.htm + http://www.pnas.org/content/110/37/E3477 + http://www.nature.com/news/overpumping-threatens-to-deplete-us-high-plains-groundwater-1.13623
  in Tietoukka Monitor > 2013 > 2013-35 with groundwater irrigation ogallala_aquifer usa water_availability
• [2013-12-13] Saving the Great Plains water supply
  + http://www.sciencedaily.com/releases/2013/12/131213135427.htm + http://msutoday.msu.edu/news/2013/saving-the-great-plains-water-supply/ + http://onlinelibrary.wiley.com/doi/10.1002/2013EF000107/abstract + http://www.futurity.org/complete-shift-needed-save-aquifiers-water/
  in Tietoukka Monitor > 2013 > 2013-50 with agriculture groundwater_extraction irrigation ogallala_aquifer usa

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