2016 Impaired Waters List

The 2016 Impaired Waters List was approved by U.S. EPA on January 28, 2019.

Office spreadsheet icon 2016 Proposed Impaired Waters List (wq-iw1-55)
  • Proposed 2016 TMDL (303(d)) List
  • Proposed 2016 Inventory of All Impaired Waters
  • Proposed Appendix A of the Statewide Mercury TMDL (Impairments added to the TMDL; for more information see the Statewide Mercury TMDL web page.)
  • Extras: A summary of impairments; What’s new and what’s changed since the 2014 list; informational tabs to help you interpret the document. (last updated 12/27/2016)

PDF icon 2016 Guidance Manual for Assessing the Quality of Minnesota Surface Waters for Determination of Impairment 305(b) Report and 303(d) List (wq-iw1-04i)

Describes Minnesota's monitoring and assessment strategy, assessment tools, and the redesigned assessment process. This guidance defines the required data and information and lays out the criteria by which waterbodies are assessed to determine if beneficial uses are supported. (Last updated 12/27/2016)

PDF icon US EPA’s decision document on Minnesota's 2016 and 2018 Impaired Waters Lists (wq-iw1-63)

The MPCA has not finalized methods for identifying waters used for production of wild rice or for assessing impairment of waters based on the existing wild rice-related standard. Consequently, the 2016 Impaired Waters List does not include any waters assessed as impaired for the sulfate wild rice standard. The MPCA continues to consider next steps for the sulfate standard to protect wild rice.