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Groundwater Management in the Twin Cities Metropolitan Area

Groundwater Management in the Twin Cities Metropolitan Area. Keith Buttleman Metropolitan Council Environmental Services. April 9, 2013. Senate Environment & Natural Resources Committee. Findings. Current approach to water supply management and development is unsustainable

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Groundwater Management in the Twin Cities Metropolitan Area

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  1. Groundwater Management in the Twin Cities Metropolitan Area Keith Buttleman Metropolitan Council Environmental Services April 9, 2013 Senate Environment & Natural Resources Committee

  2. Findings • Current approach to water supply management and development is unsustainable • Aquifers levels declined – depleted • Lakes, Stream and wetlands damaged

  3. Metropolitan Area Water Supplies • Over 50% of Minnesota’s population in Metro Area • Surface Water: 30 % of total supply • St Paul and Minneapolis • Intakes from Mississippi River • Groundwater: 70 % of total supply • Municipal wells • Private wells 2/6/2013

  4. Water Supply Trends 2/6/2013

  5. Aquifers are Impacted

  6. Surface Waters are Impacted Example - White Bear Lake

  7. 2030 Prairie du Chien-Jordan Aquifer Conditions “Business As Usual”

  8. PDC-J Aquifer Decline under 2050 Avg. Annual Pumping

  9. Future Directions • “Business As Usual” is not a solution • Recognizing limits on regional groundwater supplies • Balanced use of surface water, groundwater, and reclaimed water

  10. Surface Water

  11. Prairie du Chien- Jordan Aquifer

  12. Surface Water Sources 39 Billion Gallons diverted annually 9,500 cfs ( 2.2 Trillion GPY) 4,900 cfs (1.1 Trillion GPY) 6,000 cfs (1.4 Trillion GPY) 4.7 Trillion Gallons of river water flowing in the metro area

  13. Conclusion • Region needs to: • Restore Balance among water sources • Maintain and enhance recharge capability • Conservation • Council needs to • Develop growth plans that ensure sustainable water supply

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