Lynn Camp Prong Update 2015

Hello everyone,
Wanted to pass along an update on the brook trout population abundance results for Lynn Camp Prong following recent electrofishing surveys.  In general, the population appears to be doing very well and meets and/or exceeds pre-treatment biomass of rainbow trout in all sites.  The attached document provides more details on the survey results.
I would like to thank all the volunteers and agencies who assisted with the project, both during the recent surveys.  These projects are not possible without the financial, agency and volunteer support of many people, and the park sincerely appreciates all the support for the project.  Please let me know if you have any questions or comments on the update or any other questions.


8 July 2015
The fisheries staff, with assistance from local volunteers, Trout Unlimited members, Great Smoky Mountains National Park (GRSM) interns and a group of outdoor writers, ranging in age from 7 to 82, conducted population monitoring surveys on the lower 3 miles of Lynn Camp Prong June 22, 24 and 25.  Electrofishing surveys on Lynn Camp and a tributary (Marks Creek) indicate brook trout populations are at (15 kg/ha) or exceeding (>34 kg/ha)  pre-treatment biomass of rainbow trout at all 5 sites. The data indicate there are now between 1,392-5,616 brook trout per mile of stream on Lynn Camp Prong. The upper end of the biomass range (>35 kg/ha) would be considered exceptional in terms of trout abundance for any GRSM stream. Both 2014 and 2015 produced excellent year classes of young-of-year (YOY) brook trout, which
means there will be good numbers of adults in the next 2-3 years. In fact, YOY fish comprised 53% of the total brook trout catch across all sites. Of the adults collected in all sites, 23% were greater than 7 inches with good numbers of fish >8 inches. Catch rates of anglers have been reported in the 20-40 fish per hour range with the highest catch rates being reported farther Lynn_Camp_Prong_Update_8July2015from the trailhead.

Figure 1.— Biomass of pre-treatment rainbow trout and post-treatment brook trout after restoration of 8.5 miles of Lynn Camp Prong, GRSM using the fish piscicide antimycin. The pre-treatment biomass of rainbow trout was used as a recovery target for the newly established brook trout population. Each site number represents 100m increments from the barrier falls.


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