Study: Southwestern Minnesota has no lakes clean enough for swimming
The waters occupy six counties in the southwestern corner of the state. That’s an agricultural region and the MPCA says farming practices are the main culprit behind the sediment, nitrates, and bacteria that are polluting the rivers and lakes.
More:
http://bringmethenews.com/2015/03/04/st ... -swimming/
Being that they are that polluted, and we hunters wonder why there are no ducks in MN like there used to be.