Government officials are limiting fishing access to nearly 30 rivers to alleviate pressure on cold-water fish species as hot ...

A 14-year-old Montana rancher lassoed a drowning man from the Yellowstone River after a rafting accident, using cowboy skills ...

A Yellowstone National Park visitor captured the tense moments after a child got too close to a bison near a boardwalk.

Many trout anglers let their catch swim free after netting it. But temperature-stressed rainbow or cutthroat trout can die if they're out of water even briefly.

Trout need cool water to survive, but record heat this summer has driven water temperatures to lethal levels for fish.

Dead Fish in the Firehole: Yellowstone Shuts Down Three Iconic Rivers as Summer Heat Turns Lethal For the thousands of ...

Anglers visiting Yellowstone National Park will face new fishing restrictions beginning this week as park officials respond ...

You've got to keep your head on a swivel in Yellowstone National Park, and this fisherman learned that the hard way when a ...

Video shared on social media shows tourists walking on the fragile crust of Yellowstone National Park’s largest hot spring.

Researchers are studying whether the health of aquatic insects is an early warning sign of broader changes across the Greater ...

In the middle of a riffle on the Madison River, Jackson Birrell is sprawled across river rocks, pushing all his weight on a metal bucket. He’s looking for bugs. Birrell, an aquatic entomologist and ...

In the middle of a riffle on the Madison River, Jackson Birrell is sprawled across river rocks, pushing all his weight on a metal bucket. He’s looking for bugs. Birrell, an aquatic entomologist and ...