Environmental Protection
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TMDL Fact Sheets
What is a TMDL? A Total Maximum Daily Load (TMDL) is the maximum amount of a pollutant that a body of water can receive while still meeting water quality standards. A waterway that exceeds water quality standards is often no longer suitable for its…
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TMDLs in Development
Wisconsin TMDLs in development include waters where specific projects have been started. These projects gather detailed water quality data, analysis of data for modeling pollutant loads and determine reductions and/or where resource professionals…
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Point Source TMDL Implementation
Once a TMDL is approved, federal and state regulations require implementation of point source requirements, or wasteload allocations (WLAs), from the TMDL to be expressed in Wisconsin Pollutant Discharge Elimination System (WPDES) permits.…
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TMDL Overview
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TMDL Implementation
Once a Total Maximum Daily Load (TMDL) is developed and approved, federal and state regulations then require implementation of TMDLs to meet water quality standards where there are implementation mechanisms in place and supported by law. For point…
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Upper Fox and Wolf Rivers TMDL
The Upper Fox River and Wolf River Basins. © Winnebago Waterways
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Featured Water Restorations
Since 2002, the DNR has delisted 89 individual streams, lakes or beaches, representing 443 stream miles and 52,000 lake acres in the state. Below are a few stories of the road to these waters' aquatic health recovery.
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Resources for homeowners and farmers
The following resources describe things homeowners and farmers can do to reduce polluted runoff, related to the Wisconsin River Basin TMDL.
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Presentations, webinars and videos
Presentations, webinars and videos on the Wisconsin River TMDL and related topics. Presentations February 2018 informational webinar and meetings The DNR hosted an informational webinar on February 21, 2018, which kicked off a series of…