ILLINOIS WATER RESOURCE IMPACTS. Derek Winstanley, Illinois State Water Survey,

Champaign, Illinois 61820-7463

Many components of energy production, distribution, and use in Illinois require water. The presentation identifies these water uses and sources of water in the context of overall water supply and use in Illinois.

The energy sector produces waste, some of which impacts water resources, and water quality issues will be addressed. This will include the impacts on precipitation quality of regional energy-related emissions.

Increasing demand for energy and changes in the sources of energy could affect water demand and use in Illinois. The presentation will also address the water resource impacts of a range of energy scenarios for Illinois, again in the context of overall water supply and use in Illinois.

Water resources in Illinois are determined primarily by climatic conditions. Precipitation is the source of water for rivers, lakes, streams, and reservoirs, and shallow groundwater aquifers. Variations in precipitation cause droughts and floods and variations in groundwater levels. Temperature also affects the availability of water through losses by evapotranspiration. Climate will continue to be variable in the future, as will the availability of water resources. An additional concern is the possibility of climate change due to natural and man-made factors. The presentation will address the issues of climate variation and change as they might affect Illinois water supply and demand.

Finally, a summary will be provided of policies that are in place to protect the state's water resources. Challenges to improved water resources planning and management will be identified.

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