Montana’s rollback of its water-quality standards comes at a time of heightened attacks on the Clean Water Act nationwide.

Get any of our free daily email newsletters — news headlines, opinion, e-edition, obituaries and more. State officials suspect a potentially serious attempt at so-called “bucket biology” in northwest ...

Biologists in Montana are sounding alarms over the discovery of nonnative brown trout in the Flathead River in the northwestern part of the state. Montana Fish, Wildlife and Parks published a press ...