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Harvey Thorleifson, Ph.D. Director Minnesota Geological Survey University of Minnesota

Harvey Thorleifson, Ph.D. Director Minnesota Geological Survey University of Minnesota. Information Systems Required to Ensure Sustainable Groundwater Supply. Harvey Thorleifson, Ph.D. Director Minnesota Geological Survey University of Minnesota.

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Harvey Thorleifson, Ph.D. Director Minnesota Geological Survey University of Minnesota

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  1. Harvey Thorleifson, Ph.D. Director Minnesota Geological Survey University of Minnesota

  2. Information Systems Required to Ensure Sustainable Groundwater Supply Harvey Thorleifson, Ph.D. Director Minnesota Geological Survey University of Minnesota

  3. Information Systems Required to Ensure Sustainable Groundwater Supply Harvey Thorleifson, Ph.D. Director Minnesota Geological Survey University of Minnesota

  4. Groundwater USGS

  5. EC

  6. Industry, 14% Domestic, 43% Agriculture, 43% IMPORTANCE OF GROUNDWATER FOR CANADA Groundwater Use in Canada

  7. Groundwater USGS - not recharged locally -

  8. Groundwater pumping Surface water and groundwater systems are linked; much to most river flow is groundwater USGS

  9. USGS

  10. Threats to groundwater quality Vulnerability and fate of contaminants are governed by geology

  11. Groundwater contaminant plume USGS

  12. Role of groundwater Principal drinking water source Principal source of irrigation water Critical water supply for industry Principal usable freshwater reserve Source of water for wetlands & streamflow

  13. Sustainable groundwater use “development and use of groundwater in a manner that can be maintained for an indefinite time without causing unacceptable environmental, economic, or social consequences” United States Geological Survey

  14. Sustainable pumping rates

  15. Observation Wells

  16. Unsustainable pumping rates

  17. CLIMATE CHANGE NGDC

  18. Saltwater intrusion USGS

  19. Land subsidence USGS

  20. Groundwater sustainability priorities sustainable long-term yields maintenance of river flow effective use of stored water preservation of water quality preservation of aquatic environments

  21. Sustainable groundwater management • We need to balance • groundwater pumping and land use activity • with • maintaining groundwater quality and quantity • What do we need to do to achieve this?

  22. Requirements for sustainable groundwater development • protect recharge • minimize contamination • manage pumping

  23. Indicators for sustainable groundwater development • quantity • quality • mapping of groundwater systems

  24. County Atlas - Regional Assessment Program

  25. Assessing the sustainability of a regional groundwater system • Winnipeg

  26. MWRB

  27. Drillhole data

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