• A bull elk bugles in Yellowstone National Park

    Yellowstone

    National Park ID,MT,WY

There are park alerts in effect.
hide Alerts »
  • Craig Pass Closed for the Season; Mammoth to Norris Closed Sept. 14-30

    The road linking West Thumb and Old Faithful is closed for the season—traffic should detour through West Thumb, Lake, and Canyon. The road from Mammoth to Norris is closed for two weeks—traffic should detour over Dunraven Pass. More »

Yellowstone Fish Reports

A collage of photos: person holding a giant trout and a person standing next to a boat by a body of water.
Graduate researcher holding giant cutthroat trout at Clear Creek, Yellowstone National Park (left) and Yellowstone National Park fisheries biologist (right) with an electrofishing raft on the Yellowstone River upstream of Yellowstone Lake.
NPS photo by(left)Ertel and (right)Koel
 
 

Peer-reviewed Literature

Other Technical Reports

Yellowstone Science Articles

National Environmental Protection Act Documents

Additional Technical Information

Additional information regarding Yellowstone's fish and other aquatic resources is available at the Greater Yellowstone Science Learning Center. Visit the GYSLC at www.greateryellowstonescience.org

The links labeled pdf can only be viewed or printed using Adobe
Acrobat Reader (available free, online).

Did You Know?

Bear Cubs

Even though the animals of Yellowstone seem tame they are still wild. Feeding the animals is not permitted in any way, and all visitors must keep 100 yards away from wolves and bears, and 25 yards from other animals.