Land use did the damage; much of it can’t be undone. In some parts of the state, however, there’s still hope.   Read more:  StarTribune Article

If 75 percent of a lakeshore remains mainly forested, the chance of maintaining lake quality is good. But when natural cover falls below 60 percent, lakes begin to deteriorate. (BRIAN PETERSON • BRIANP@STARTRIBUNE.COM)