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TMDL overview
Overview of TMDLs.
TMDL development
TMDLs in development.
TMDL approvals
USEPA approved TMDLs.
TMDL implementation
TMDL implementation.
Wastewater, storm water, CAFOs
TMDL Point source issues.
Nonpoint source
TMDL runoff stormwater issues.
TMDL map and projects
TMDL Map and projects.
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Contact information
For more information on the Northeast Lakeshore TMDL, contact:
Kim Oldenborg
Northeast Lakeshore TMDL coordinator

Northeast Lakeshore Total Maximum Daily Load (TMDL) A framework for water quality improvement

South Branch of the Manitowoc River South Branch of the Manitowoc River

The DNR, together with many partners throughout the basins, are working to improve surface water quality of tributaries, streams, rivers and lakes within the Northeast Lakeshore (NEL) TMDL basins. The NEL TMDL is focused on addressing surface water quality impairments from phosphorus and total suspended solids. In addition, quantifying nonpoint nitrogen loading is part of the study; however, a TMDL will not be created for nitrogen because there are no surface water standards for nitrogen. The TMDL study and implementation plan will provide a strategic framework and prioritize resources for surface water quality improvement across the basins that make up Wisconsin's northeast lakeshore.

The NEL TMDL study area spans a portion of the Lake Michigan watershed from just south of Sturgeon Bay to Port Washington and reaches west towards Lake Winnebago (Lake Winnebago is covered by the Upper Fox and Wolf TMDL), covering 1,964 square miles, approximately 3.5 percent of the state.

The Wisconsin legislature supports the TMDL and has provided funding for the NEL TMDL. See s. 281.145, Wis. Stats. [exit DNR]

The project is currently in the TMDL development stage.

The TMDL process pipeline- Development stage

Project Overview

Informational Meetings - April 2020

Draft Data Sets

Stakeholder review - July 2019

Below is the first round of draft products that the DNR has made accessible for stakeholder review. These products will contribute to the development of the watershed model. Additional datasets will be posted for review as they are developed. Please review the instructions document below for more information. Comments were accepted through July 12, 2019. Data sets were revised according to stakeholder comments and updated in January 2020.

Projected project milestones

Map and spatial data viewer

Last revised: Thursday February 06 2020