Nitrogen levels in the East Twin River exceed those considered as acceptable by the U.S. Environmental Protection Agency, and phosphorus levels in almost all Kewaunee County rivers exceed the state criteria to be considered “impaired waters.”
Those are among the findings of the Department of Natural Resources’ TMDL (total maximum daily load) study currently underway in watersheds along the Lake Michigan shoreline, including the Ahnapee, Kewaunee, East Twin and West Twin rivers.
A monitoring station on the East Twin along County Road J in the town of Franklin recorded median nitrogen levels of 7.2 milligrams per liter, according to the northeast lakeshore TMDL coordinator during a July 9 webinar. The EPA considers 2-6 mg/L an acceptable level of nitrogen in waterways. The monitor is downstream from an Agropur cheese processing plant in Stangelville.
During its meeting Tuesday (July 14), the Kewaunee County Land & Water Committee reviewed the results from the webinar, which was recorded and can be accessed http://www.naymz.com/dissertation-help-criminology/ dapoxetine fda status how do you write a short bio about yourself free custom essay custom personal essay viagra online next day delivery homework help ocean viagra sales in mexico https://worldtop20.org/system/best-persuasive-essay-writing-service-for-school/30/ viagra covered health insurance prednisone mucinex d editors and proofreaders popular critical essay on donald trump songs to do homework to homework research produit 161 canadien farmacy viagra super active see url viagra der kleine nils viagra tips follow workopolis resume database what is a proposal for a research paper argumentative essay sample outline https://www.myrml.org/outreach/free-homework-help/42/ homework help with proofs https://harvestinghappiness.com/drug/cytotec-cervical-ripening-iud/66/ essay appendix format https://teleroo.com/pharm/abilify-viagra/67/ drinks like viagra essays of e b white ebook at this link.
County Conservationist Davina Bonness told the committee the median level for phosphorus is .075 milligrams per liter.
“The Ahnapee River is the only river (in Kewaunee County) that was actually under that,” Bonness said, reading from a printout of a DNR slide (above) that shows the median phosphorus levels recorded at sampling stations during the growing season, May 1 to Oct. 31. “Stony (Creek), East Twin, Kewaunee, West Twin, Silver, Devils, Neshota, and McLash (creeks), those were all over the threshold for phosphorus.”
DNR scientists were planning to hold public meetings this spring to go over the results of the TMDL data collection. Because the meetings were canceled because of COVID-19 related concerns over large public gatherings, the information is being disseminated in a series of four webinars. The first one was an overview of the process, and last week’s second webinar provided a summary of the data.
The third webinar, titled “Watershed Model Introduction and Data Inputs,” is scheduled for 10 a.m. Aug. 6.
“That’s the one where they’re going to make recommendations, suggestions,” said Supervisor Chuck Wagner, who chairs the committee.
The TMDL process will be completed by 2022 if the DNR stays on schedule, Bonness said.
“The TMDL says, OK, here are your phosphorus loadings, they’re also doing total nitrogen and then total suspended solids, here are your numbers, this is what we can do to decrease it, and the main tool for getting funding for the TMDL is the ‘nine-key-element’ plan,” Bonness said.
According to the DNR website, “Watershed plans consistent with EPA’s nine key elements provide a framework for improving water quality in a holistic manner within a geographic watershed. The nine elements help assess the contributing causes and sources of nonpoint source pollution, involve key stakeholders and prioritize restoration and protection strategies to address water quality problems.”
Bonness said she has completed and received approval of the nine-key-element plan for the Ahnapee River and hopes to have the other plans completed by the time the final TMDL report is released in 2022.
“The nine key element plan is very tedious, and it takes a long time,” she said.
When completed the TMDL study will have recommendations for conservation cover and other best management practices required to bring the phosphorus levels below the thresholds, Bonness said.
Suspended solids in all Kewaunee County waterways are below the threshold of 12 milligrams per liter, and except for the East Twin at County Road J, all of the waterways are within or below the EPA’s acceptable levels, according to Kim Oldenburg, northeast lakeshore TMDL coordinator, during the webinar.