Iowa DNR Uses Chemical Treatment To Remove Fish From Lake

Sat 11-17-2018

DES MOINES, Iowa (AP) — The Iowa Department of Natural Resources is using a pesticide that has reportedly been linked to Parkinson's disease to eliminate undesirable fish from a Des Moines lake as part of a decade-long effort to improve the habitat and water quality. The agency says the same chemical has been used in our area.

Rotenone was applied Tuesday to the south side of Easter Lake to remove common carp and gizzard shad.

Residents and animals should avoid contact with the water during treatment, according to a department release. It will take a couple days for the chemical to dissolve into flowing streams, and possibly weeks to dissolve in nearby ponds and the main lake. Public areas will be closed until further notice, the release said.

Mark Flammang, a DNR fisheries management biologist, disputed concerns last month regarding studies that linked the pesticide to Parkinson's disease. Flammang said more research indicates rotenone is safe.

The DNR has used rotenone for decades to kill fish, bacteria and fungi as part of waterway restorations projects in Okoboji, Clear and Carter lakes.

(From The Associated Press).