(Milford)– Researchers with Iowa State University presented their findings into water quality issues with the lower chain of the Iowa Great Lakes at a public informational meeting Monday evening in Milford.
John Downing, a Limnologist (study of lakes) Professor at ISU, told the crowd what many already know–the lower chain, especially Lower Gar, is being harmed by high levels of phosphorous and suspended solids.
And while they didn’t detect high levels of it, Downing said two different types of bacteria were found as well–E. coli and choloform…typically associated with human or animal waste. Downing says the heaviest source of the bacteria seems to be where storm sewers are emptying into the lakes.
When it comes to phosphorous and fertilizer use, Downing said the primary sources appear to be lawn fertilizer and some agricultural areas on the eastern side of the lakes watersheds.
Results of a survey of property owners along the lower chain of lakes presented at Monday evening’s meeting show large support for dredging of Upper Gar, Minnewashta and Lower Gar lakes. And while Downing says that may be an option, he feels any work first should be focused on the surrounding watershed–including the upstream areas of the Okoboji’s and Big Spirit Lake and even into Minnesota. While a lot has already been done in those areas, Downing says more could still be accomplished.
Mike McGee, Manager of the Iowa Department of Natural Resources Lake Restoration Program, told the crowd the researchers findings are the first step of getting the lower chain of lakes into that program.
He added the findings of the research are now being put in final draft form that will be on file with the DNR, which will, along with the assistance of local committees, develop an implementation plan for the restoration efforts.
