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Simulation of Consumptive Use Impacts on Upper Great Lakes Water Levels



Contributors
Yin Fan;
Abstract
The Coordinated Great Lakes Regulation and Routing Model was used to simulate the impacts of consumptive use on upper Great Lakes water levels. The model was run using the existing Lake Superior Regulation Plan 77A with and without 2004 consumptive use data added into the historical net basin supplies for all lakes for the entire period of record (1900 to 2006). The simulated differences in the levels and flows between the two time series showed that consumptive uses lowers the lakes by a small amount, from about 1 cm (0.4 inches) for Lake Superior up to a maximum of approximately 4 cm (1.6 inches) for Lake Michigan-Huron.
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Consumptive Use Impacts on Water Levels
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Supporting Content (Show)
Main Topics
Lake Superior Regulation
Questions We Asked
Can a regulation plan be designed to perform better than Plan 1977A?
What are the main benefits of the new regulation plan?
Key Findings
Plan 2012 will be more robust and provide important benefits compared to Plan 77A
Plan 2012 provides overall economic improvements
Recommendations
Approve Lake Superior Plan 2012
Tasks
Water Uses Evaluation
Hydrological Modelling