Senate Environment & Natural Resources Committee Groundwater Management in the Twin Cities...
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Transcript of Senate Environment & Natural Resources Committee Groundwater Management in the Twin Cities...
![Page 1: Senate Environment & Natural Resources Committee Groundwater Management in the Twin Cities Metropolitan Area April 9, 2013 Keith Buttleman Metropolitan.](https://reader036.fdocuments.us/reader036/viewer/2022062719/56649ed25503460f94be1b38/html5/thumbnails/1.jpg)
Senate Environment & Natural Resources Committee
Groundwater Management in the Twin Cities Metropolitan Area
April 9, 2013
Keith ButtlemanMetropolitan Council Environmental Services
![Page 2: Senate Environment & Natural Resources Committee Groundwater Management in the Twin Cities Metropolitan Area April 9, 2013 Keith Buttleman Metropolitan.](https://reader036.fdocuments.us/reader036/viewer/2022062719/56649ed25503460f94be1b38/html5/thumbnails/2.jpg)
Findings
• Current approach to water supply management and development is unsustainable
• Aquifers levels declined – depleted
• Lakes, Stream and wetlands damaged
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Over 50% of Minnesota’s population in Metro Area
Surface Water: 30 % of total supply
o St Paul and Minneapoliso Intakes from Mississippi River
Groundwater: 70 % of total supply
o Municipal wells
o Private wells
Metropolitan Area Water Supplies
2/6/2013 3
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Water Supply Trends
2/6/2013 4
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Aquifers are
Impacted
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Surface Waters are Impacted
Example - White Bear Lake
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2030 Prairie du Chien-Jordan Aquifer Conditions
“Business As
Usual”
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8
PDC-J Aquifer Decline under 2050 Avg. Annual Pumping
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• “Business As Usual” is not a solution– Recognizing limits on regional
groundwater supplies– Balanced use of surface water,
groundwater, and reclaimed water
Future Directions
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Surface Water
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Prairie du Chien-Jordan Aquifer
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Surface Water Sources9,500 cfs ( 2.2 Trillion GPY)
4,900 cfs(1.1 Trillion
GPY)
6,000 cfs(1.4 Trillion GPY)
4.7 Trillion Gallonsof river water flowing in the metro area
39 Billion Gallonsdiverted annually
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• 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
Conclusion