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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.

Subscribe to receive email updates about the Wisconsin River TMDL.

Contact information
For information on the Wisconsin River Basin TMDL, contact:
Kevin Kirsch
Wisconsin River TMDL project manager

Wisconsin River Total Maximum Daily Load (TMDL) A framework for water quality improvement

The Wisconsin River

The DNR, together with many partners throughout the basin, are working to improve water quality of the Wisconsin River, its reservoirs 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 Wisconsin River Basin.

The Wisconsin River TMDL study area spans Wisconsin's central corridor from the headwaters in Vilas County to Lake Wisconsin in Columbia County, covering 9,156 square miles, approximately 15 percent of the state.

December 2018 submittal to EPA

The DNR has sent the Wisconsin River TMDL to US EPA for their review and approval. Comments received during the August 2018 public hearing process have been considered and incorporated into the submittal to the EPA. A summary of the comments received along with written responses can be found in Appendix R – Response to Public Hearing Comments [PDF].

Report downloads

Report sent to EPA
Wisconsin River Basin TMDL EPA Submittal (December 2018) [PDF]
GIS Data
GIS Data including CAFOs, MS4s, Wastewater Outfalls and Subbasins [ZIP]
Appendix A – Tributary Information and Charts [PDF]
Appendix B – Lakes Requiring Additional Evaluation [PDF]
Appendix C – Site-Specific Analysis [PDF]
Appendix D – Watershed Modeling Documentation [PDF]
Appendix E – Sediment Monitoring [PDF]
Appendix F – Base Line Load [PDF]
Appendix G – MS4 Detail Maps [PDF]
Appendix H – Total Phosphorus Loading Capacity of Petenwell and Castle Rock Flowages [PDF]
Appendix I – BATHTUB and Empirical Lake Models [PDF]
Appendix J – Allocations Current Criteria [PDF]
Appendix K – Allocations Proposed Site-Specific Criteria [PDF]
Appendix L – Watershed Implementation Activities [PDF]
Appendix M – CE-QUAL-W2 Reservoir Model [PDF]
Appendix N – Agricultural Phosphorus Targets [PDF]
Appendix O – Trading and Adaptive Management Information [PDF]
Appendix P – Response to Preliminary Comments [PDF]
Appendix Q – Public Hearing Comments [PDF]
Appendix R – Response to Public Hearing Comments [PDF]

August 2018 public hearing

The DNR hosted a public informational hearing on August 22, 2018, at the Portage County Courthouse Annex Building in Stevens Point and accepted written comments through September 19, 2018.

February 2018 informational webinar and meetings

The DNR hosted an informational webinar on February 21, 2018, which kicked off a series of informational meetings to outline its efforts to reduce phosphorus loads in waters throughout the basin. The same content was presented at each meeting.

The Feb. 21, 2018, webinar provided an overview of the TMDL study and the supporting report.

On March 5, 6 and 14, 2018, the DNR hosted informational meetings providing an overview of the TMDL study and soliciting public input.

Overview of the project

A canoe and dog along the Wisconsin River

Map and spatial data viewer

Technical project details

Presentations and e-library

Last revised:Thursday December 20 2018