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Climate Change and Great Lakes Water Resources

  • Noah D. Hall, Bret B. Stuntz
  • Nov 01, 2007

Part I of this report focuses on how climate change will impact water resources. It begins with a brief summary of climate change science. It then explores what a changing climate will mean for the Great Lakes, including possible lowering of lake levels, impacts on fisheries and wildlife, changes in Great Lakes shorelines, and reduction of groundwater supplies.

Climate change will also reduce water supplies in other parts of the country, creating increased pressure to divert Great Lakes water to other regions. As the Great Lakes and other regions struggle with loss of water supplies, demand for water is expected to increase unless water conservation laws and policies are adopted.

Part II of this report focuses on policies to reduce greenhouse gas emissions that cause climate change and to adapt to the unavoidable impacts on water resources. It begins with a brief summary of recommendations to reduce emissions of greenhouse gases which cause climate change. It then evaluates the adequacy of existing Great Lakes water resource policies for responding to the pressures of climate change. Unfortunately, current laws and policies intended to protect Great Lakes water resources from diversions (transfers of Great Lakes water outside of the basin) and overuse within the basin are not up to the new challenges posed by climate change.

The report concludes by examining how the Great Lakes compact gives the region an opportunity to make these improvements in water resource policy and better protect the Great Lakes from the pressures of climate change.

Climate Change and Great Lakes Water Resources

The stress of climate change threatens the health of the Great Lakes, putting a valuable water resource at risk.

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