Fly guides report scarcer bug hatches every year. The density of nutrients like nitrogen and phosphorus are consistently above threshold for healthy trout populations. So is water temperature; parts ...

In this file photo from August, Save Wild Trout's lead scientist Kyle Flynn, Ph.D., carries a portable water-quality monitor out of the Big Hole River at Jerry Creek Fishing Access Site.

The move is to protect the park’s native and wild trout fisheries. High temperatures and low river flow must improve until ...

Research by Montana Fish, Wildlife and Parks and Montana State University found that the majority of fish in the Big Hole, Ruby and Beaverhead rivers were healthy. Habitat issues remain.

America’s western states offer fantastic fly-fishing, and I’ve happily fished through the rocky, rollicking waters from Montana to New Mexico.