Michigan's Water Withdrawal Assessment Tool


The Water Withdrawal Assessment Tool (WWAT) is designed to estimate the likely impact of a water withdrawal on nearby streams and rivers. Use of the WWAT is required of anyone proposing to make a new or increased large quantity withdrawal (over 70 gallons per minute) from the waters of the state, including all groundwater and surface water sources, prior to beginning the withdrawal.



Natural resource and water quality practitioners; geologists, ecologists.


MSU's Institute of Water Research and MSU Extension, along with the Department of Natural Resources, U.S. Geologic Survey, and the Department of Environmental Quality.

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See related programs in these topics: