• Wizard Island

    Crater Lake

    National Park Oregon

There are park alerts in effect.
show Alerts »
  • Vehicle-Free Days on East Rim Drive

    The park will host two vehicle-free days on East Rim Drive, September 20 and 27, 2014. Although East Rim Drive will be closed for these events, all other roads through the park will remain open to vehicular traffic. More »

  • Lost Creek Campground CLOSED Nights of 9/19 and 9/26

    Lost Creek Campground will be CLOSED from 3:00 PM Friday, 9/19 until 5:00 PM Saturday, 9/20 because of the temporary road closure to vehicles on East Rim Drive. It will also be CLOSED from 3:00 PM Friday, 9/26 until 5:00 PM Saturday, 9/27.

  • Stage 1 Fire Restrictions in Effect

    To ensure public safety and to provide the highest degree of protection to park resources, restrictions on campfires, smoking, and fireworks are in effect. More »

Bull Trout distribution

Description of the bull trout distribution in the pacific northwest.

Historic bull trout distributions in the pacific northwest.

Western Native Trout Campaign

  • The bull trout is a char most closely related to white-spotted char of northeast Asia
  • Historic range from northern California (McCloud River) and Nevada to northern Canada, now extirpated from California
  • One of the most restricted temperature tolerances of any North American salmonid: optimal growth at ~13°C, decline in feeding ≥16°C
  • Exhibit diverse life histories, including resident, potamodromous, and anadromous forms
  • Known for piscivory at large sizes
  • Once maligned as “trash fish” subject of eradication efforts during early 20th century
 
Maps of the distribution of Bull Trout.

Upper Klamath Basin Bull Trout distributions.

NPS

  • Bull Trout once widely distributed in Upper Klamath Basin at least as far downstream as Keno.
  • At least 40% of historical Bull Trout populations in the basin have experienced recent extirpation (Buchanan et al. 1997).
  • Bull Trout now limited to discrete isolated headwater populations.
  • Listed as threatened under ESA in Klamath in 1998, prior to range-wide listing in 1999
  • Basin-wide recovery goals include expanding populations downstream.
  • In 1989 Bull Trout in Sun Creek were restricted in distribution to 1.9 km and numbered approximately 150 individuals.
  • Threats included nonnative Brook Trout (S. fontinalis) and lack of habitat connectivity due to irrigation of private land.

Did You Know?

Did You Know?

Wizard Island is a cinder cone that erupted after Crater Lake began to fill with water. It is one of two islands in Crater Lake. Do you know the name of the other island?