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TMDL overview
Overview of TMDLs.
TMDL development
TMDLs in development.
TMDL approvals
List of TMDLs approved by USEPA.
TMDL implementation
TMDL implementation.
Wastewater, storm water, CAFOs
Point source issues in TMDLs.
Nonpoint source
Runoff and stormwater related to TMDLs.
TMDL map and projects
Map of TMDL Projects and New Dynamic Project Pages.
Contact information
For more information on the Upper Fox and Wolf TMDL, contact:
Keith Marquardt
Upper Fox and Wolf TMDL project manager

Upper Fox and Wolf Total Maximum Daily Load (TMDL) A framework for water quality improvement

The Upper Fox River and Wolf River Basin, courtesy of Winnebago Waterways.

The Upper Fox and Wolf River Basins (UFW) are two separate basins that converge within a series of pool lakes in Winnebago County before finally flowing collectively into Lake Winnebago. All the surface water drainage to Lake Winnebago is contained within these two basins. Lake Winnebago outlets into the Lower Fox River Basin, where it eventually flows into Green Bay.

The DNR, together with many partners throughout the basins, are working to improve water quality within the Upper Fox and Wolf Rivers, which includes many lakes and tributaries. The Total Maximum Daily Load (TMDL) study and implementation plan will provide a strategic framework and prioritize resources for water quality improvement in the UFW.

The UFW TMDL study area spans Wisconsin's east central corridor from the headwaters in Forest County and the city of Portage to Lake Winnebago, covering 5,900 square miles, approximately 10 percent of the state.

The TMDL process pipeline

December 12, 2018, public hearing

The DNR will host a public informational hearing on December 12, 2018, to receive comments on the "Total Maximum Daily Loads for Total Phosphorus and Total Suspended Solids in the Upper Fox and Wolf Basins." The hearing will take place from 2-4 p.m. at the JP Coughlin Building, 625 E County Road Y, Oshkosh, WI 545901.

Draft TMDL report (December 2018)

Comments on the draft TMDL can be submitted until 4:30 p.m. on January 18, 2019.

Submit comments via email to Keith Marquardt. Submit comments by mail to:

Keith A. Marquardt
Wisconsin Department of Natural Resources
625 E County Road Y, Suite 700
Oshkosh WI 54901

Technical reports

Map and spatial data viewer


Previous meetings

Photo of Winnebago shoreline, courtesy of Winnebago Waterways.

The Winnebago shoreline. © Winnebago Waterways

July 11, 2018, stakeholder meeting

The DNR hosted an informational meeting on July 11, 2018, which outlined its efforts to reduce phosphorus and total suspended solid loads in waters throughout the basin.

Last revised: Friday November 30 2018