A federal agency is investigating whether July releases from Grizzly Reservoir, which temporarily turned local rivers bright orange, were not in compliance with the federal Clean Water Act. Twin Lakes ...

The gradual drawdown of water from Grizzly Reservoir, initiated in early July for scheduled dam construction, has led to temporary discoloration in Lincoln Creek and the Roaring Fork River on Tuesday.

Local rivers are seeing more water this summer because a high-alpine dam and reservoir maintenance project is preventing diversions to the Front Range. The Twin Lakes Reservoir & Canal Co. will not ...

Rising water temperatures and declining water quality are responsible for the death of nearly 200 fish at Grizzly Reservoir in Pitkin County, according to the results of Colorado Parks and Wildlife’s ...

A close encounter with a grizzly bear in a bad mood is a terrifying thing. The monstrous beasts can weigh in at nearly 900 lbs. and stand more than 9 ft. tall when they rear up on their hind legs, ...

Kayaking through the Rockies promises adrenaline from roaring rapids, not from a charging grizzly. In this jaw-dropping footage, rafters’ shouts echo across the canyon as a massive bear plunges into ...

Known only by her research number, Grizzly 399 has been a fixture in Grand Teton National Park since 2007, becoming the world’s most famous grizzly bear. Now 399 is raising four new cubs in the face ...

Pitkin County officials say that a July release from Grizzly Reservoir that turned Lincoln Creek and the Roaring Fork River orange had minimal biological effects on fish and other aquatic life. Water ...

Rising water temperatures and declining water quality are responsible for the death of nearly 200 fish at Grizzly Reservoir in Pitkin County, according to the results of Colorado Parks and Wildlife’s ...