Indiana's Great Lakes Water Quality Agreement (GLWQA) Domestic Action Plan (DAP) for the Western Lake Erie Basin (WLEB)

Public Notice

Indiana’s DAP Advisory Committee is seeking your input on the draft Indiana’s Great Lakes Water Quality Agreement (GLWQA) Domestic Action Plan (DAP) for the Western Lake Erie Basin (WLEB) to reduce phosphorus to Lake Erie. The DAP public comment period begins August 14, 2017 and will end on October 13, 2017.

Please review the draft of the DAP and give us your comments. All comments must be submitted in writing via Survey Monkey.

Once the comment period has been completed, your comments will be addressed in writing by the Advisory Committee and by including your recommendation(s) in the DAP, if applicable. Please provide your contact information within Survey Monkey if you would like a response from us. A summary of submitted comments and the response-to-comments will be posted to this webpage.

Public meetings held by the Advisory Committee regarding Indiana’s GLWQA DAP for the WLEB have concluded. (To access the GLWQA DAP for the WLEB presentation given at the meetings, please refer to the Resources section below.)

The U.S. Draft Domestic Action Plan (DAP) for Lake Erie public notice for comments period concluded. The U.S. EPA will be addressing comments submitted and finalizing the U.S. DAP. It will serve as the federal umbrella for individual state DAPs being developed by Indiana, Ohio, Michigan, and Pennsylvania. (To access the individual state DAPs, please refer to the Resources section below.)

Background Information

The Great Lakes Nutrients Annex (Annex 4) is charged with coordinating actions to manage phosphorus loadings and concentrations within the Great Lakes. Indiana has been an active member of the Nutrients Annex since its establishment in 2013. Indiana’s commitment under the Nutrients Annex includes the development of a Domestic Action Plan (DAP) to assist in meeting nearshore and open water phosphorus objectives and loading targets for Lake Erie.

The focus of Indiana’s DAP is the 40% reduction goal for the Maumee River, which drives hazardous algal blooms (HABs) in the WLEB and contributes to central basin hypoxia.  The Maumee River is formed near Fort Wayne at the confluence of the St. Joseph River and the St. Mary’s River both of which enter Indiana from Ohio.  The Maumee River flows approximately 29 miles eastward into and through Ohio for another 108 miles to its mouth at Maumee Bay in Lake Erie near Toledo. Indiana’s goal is to meet the spring-time flow weighted mean concentration (FWMC) targets of 0.23 mg/L and 0.05 mg/L for total phosphorus (TP) and dissolved reactive phosphorus (DRP) respectively in the Maumee River as it flows across the border into Ohio.  Indiana affirms that the reduction planned for the Maumee River will address Indiana’s obligation for the 40% phosphorus load reductions entering the WLEB, which in turn positively affects the Central Basin of Lake Erie.

Advisory Committee

Development of Indiana’s DAP is led by the Indiana Department of Environmental Management (IDEM) in coordination with an advisory committee comprised of representatives from different stakeholder sectors, including:

  • Agribusiness Council of Indiana (ACI)
  • City of Auburn
  • City of Fort Wayne
  • Hoosier Environmental Council (HEC)
  • Indiana Department of Natural Resources (IDNR)
  • Indiana Farm Bureau (INFB)
  • Indiana Pork Producers Association
  • Indiana Soil and Water Conservation Districts (SWCDs) located within the Western Lake Erie Basin (WLEB)
  • Indiana State Department of Agriculture (ISDA)
  • Indiana University-Purdue University, Fort Wayne
  • Natural Resource Conservation Services (NRCS) of the U.S. Department of Agriculture (USDA)
  • Purdue University
  • Sierra Club
  • St. Joseph River Watershed Alliance
  • The Anderson's, Inc.
  • The Nature Conservancy (TNC)
  • Tri-State Watershed Alliance
  • USDA Agricultural Research Service (ARS)
  • US Geological Survey (USGS)
  • Various Indiana producers

Indiana’s DAP Advisory Committee meets routinely to coordinate the development of the DAP.

Indiana DAP Contacts

Marylou Renshaw, IDEM
(317) 308-3235

Jessica Faust, IDEM
(317) 308-3082


Indiana’s GLWQA DAP for the WLEB overview
Support/Efforts within Indiana’s portion of the WLEB
Total Phosphorus Flow Weighted Concentrations at Fixed Station Sites within Northeastern Indiana
Lake Erie Action Plan Fact Sheet
Michigan Draft Domestic Action Plan for Lake Erie
Michigan’s Implementation Plan
Ohio's Draft Domestic Action Plan
State of Ohio’s Western Lake Erie Basin Collaborative Implementation Plan
Pennsylvania's Draft Lake Erie Phosphorus Reduction Domestic Action Plan
Expectations for Domestic Action Plans under the Great Lakes Water Quality Agreement
Summary of Findings and Strategies to Move Toward a 40% Phosphorus Reduction
Nutrients Annex 2016 Progress Report of the Parties