Cooperative Research Units
Education, Research And Technical Assistance For Managing Our Natural Resources
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LaBarge Creek Cutthroat Trout Investigations

Main stem, LaBarge Creek


July 2015 - December 2018


It is unknown why hatchery-reared CRC have failed to establish or reproduce in LaBarge Creek. Translocation success rates for cutthroat trout are often less than 50% with habitat quantity and quality being the most common causes of failure (Harig and Fausch 2002). Many studies focus on a minimum habitat area that is required for CRC to persist, but the 58 stream miles (93 km) which is available in the restored area of LaBarge Creek is substantially greater than the 7km stream fragment length threshold for increased extirpation risk (Roberts et al. 2013) and the 0.8 – 6km segments in which CRC are persisting in the North Fork Little Snake River drainage (Cook et al. 2010). It may be that spring runoff events are flushing stocked cutthroat out of the system before they have had a chance to establish. The timing and size of stocked fish could also be affecting stocking success. Increased knowledge of stocked fish survival and movement post-stocking is needed to understand why CRC are failing to establish in La Barge Creek.

The goal of this project is to evaluate post-stocking survival and emigration of hatchery-reared CRC and determine factors contributing to low survival and establishment.


Current Staff

Federal Staff: 101

Masters Students: 232

Phd Students: 160

Post Docs: 58

University Staff: 268

5 Year Summary

Students graduated: 677

Scientific Publications: 1887

Presentations: 4313



Funding Agencies

  • Wyoming Game and Fish Department


Cooperative Research Units Program Headquarters Cooperators

  1. U.S. Geological Survey