The Clean Water Act (CWA) requires Michigan to prepare a biennial report on the quality of its water resources as the principal means of conveying water quality protection/monitoring information to the United States Environmental Protection Agency (USEPA) and the United States Congress.  The Integrated Report satisfies the listing requirements of Section 303(d) and the reporting requirements of Section 305(b) and 314 of the CWA.  The Section 303(d) list includes Michigan water bodies that are not attaining one or more designated use and require the establishment of Total Maximum Daily Loads (TMDLs) to meet and maintain Water Quality Standards.  The final Integrated Report was submitted to USEPA for review on March 31, 2008. The 2008 Section 303(d) list with the associated supporting documentation and errata were approved by the USEPA on July 8, 2008.

Download 2008 Report

Appendix A1 - 8 and 12 Digit Hydrologic Unit Code (HUC) Basins for the Lower Peninsula
Appendix A2 - 8 and 12 Digit Hydrologic Unit Code (HUC) Basins for the Upper Peninsula
Appendix B1 - Comprehensive list of assessment unit designated use support (HUCs 04010302 - 04050007)
Appendix B2 - Comprehensive list of assessment unit designated use support (HUCs 04060101 - 07070001)
Appendix C - Assessment units not supporting designated uses (Categories 4 or 5)
Appendix D - 303(d) list modifications
Appendix E - Crosswalk table for 2006 to 2008 assessment unit transition
Appendix F - Public Comments
Appendix G - Errata

Information Contact:  Sarah LeSage, Water Bureau, 517-241-7931, or e-mail:  lesages@michigan.gov

The Michigan Department of Environmental Quality (MDEQ), Water Bureau (WB), is accepting written comments between December 7, 2009, and January 15, 2010, on the draft Water Quality and Pollution Control in Michigan, 2010 Sections 303(d), 305(b), and 314 Integrated Report. Written comments may be submitted by January 15, 2010, to Sarah LeSage, Michigan Department of Environmental Quality, Water Bureau, 525 West Allegan Street, P.O. Box 30273, Lansing, Michigan 48909 7773, or e mail at:  lesages@michigan.gov

In addition to the IR documents, draft 2010 designated use support information will be available to the public on December 9, 2009 via the Michigan Surface Water Information Management (MiSWIM) System www.michigan.gov/miswims for the first time. The MiSWIMS is an interactive application that allows users to view and download surface water-related data and information collected by the MDEQ and MDNR.