Twin Ports Freshwater Folk: Mercury in the St. Louis River Watershed

Time, location and registration

  • Wednesday, May 3, 2023, from 11:30 a.m. to 1 p.m. CT.
  • This meeting will be held virtually.
  • Registration required.

Event schedule

  • 11:30 a.m. Meet-and-greet breakout sessions
  • 12:00 p.m. Announcements by attendees
  • 12:05 p.m. Seminar(s)
  • 12:45 p.m. Moderated question and answer
  • 1:00 p.m. Adjourn


The May 2023 Twin Ports Freshwater Folk webinar will feature Minnesota Pollution Control Agency Research Scientist Jennifer Brentrup, who will provide an overview of the St. Louis River Watershed Mercury Total Maximum Daily Load (TMDL) project that began in 2021. The history of mercury work in the state of Minnesota and reasons for developing this TMDL will be discussed. Approaches to modeling mercury cycling in the St. Louis River watershed across different land use types will be shared along with some initial modeling results and plans for future work to reduce mercury concentrations in the watershed.


What is Twin Ports Freshwater Folk?

  • Minnesota Sea Grant's Twin Ports Freshwater Folk (TPFF) webinars are for people in the Twin Ports communities of Duluth, Minnesota and Superior, Wisconsin, and anyone engaged in freshwater research, policy, or management.
  • TPFF meetings are the first Wednesday of every month and include networking and informal discussion followed by a presentation(s) on a freshwater topic.
  • Subscribe to TPFF to receive updates.


  • Alex Frie, research and fellowship coordinator, Minnesota Sea Grant.

Image credit: Jennifer Brentrup