The Kinnickinic River is at the heart of River Falls, Wisconsin, and offers visitors to the Twin Cities area opportunities for trout fishing, kayaking and more. But advocates for the Kinnickinic say the two dams on the river put its health in jeopardy, and it’s on a list of 10 “most endangered” rivers, compiled by the group American Rivers. Michael Page, president of Friends of the Kinni, says the upper dam disrupts what would otherwise be a waterfall, and the area between the dams stalls the river for about a mile and flows into a couple of mill ponds. He says that’s part of the problem. “Those two ponds actually add thermal pollution to the river,” says Page, “which, for a world-class trout stream, is a big deal.”