Cumulative Impact Assessment of Withdrawals, Consumptive Uses and Diversions: 2016 – 2020
Cumulative Impact Assessment of Withdrawals, Consumptive Uses and Diversions: 2011 – 2015
Cumulative Impact Assessment of Withdrawals, Consumptive Uses and Diversions: 2006 – 2010

In the Great Lakes-St. Lawrence River Basin Sustainable Water Resources Agreement (Agreement), the Great Lakes and St. Lawrence River States and Provinces (the Parties) commit to periodically assess the cumulative impacts of Withdrawals, Consumptive Uses and Diversions of Water from the Great Lakes—St. Lawrence River Basin (Basin). Similar commitments are included for the Great Lakes States in the companion Great Lakes-St. Lawrence River Basin Water Resources Compact (Compact).

As required by the Agreement and Compact, the cumulative impact assessment will be conducted for each Lake and St. Lawrence River watershed and for the entire Basin. These assessments fulfill the requirement of the Compact and Agreement. The assessment will be used for a review of decision making standards and their application, and for other purposes.