Stanley Lake Lake Trout Suppression

Salmonid Habitat Restoration and Acquisition

Instream Habitat
Project ID008 19 SA
Recovery DomainsInterior Columbia
Start Date01/01/2020
End Date10/31/2023
Year2019
StatusOngoing
Last Edited11/05/2021
 
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Description    


The existing Lake Trout Salvelinus namaycush population inhabiting Stanley Lake in the upper Salmon River basin poses a potential threat to ESA-listed Sockeye Salmon Oncorhynchus nerka recovery. The potential for Lake Trout migration, colonization, and population establishment threatens the currently occupied Sockeye Salmon habitat in Redfish, Alturas, and Pettit lakes, and threatens recovery efforts and successes to date, and into the future. Predator removal efforts (commercial gillnetting of Lake Trout) from Stanley Lake, are one component identified in the Stanley Lake Fisheries Management Plan, which will reduce the threat of Lake Trout expansion into surrounding Sockeye recovery lakes.



The removal of Lake Trout from Stanley Lake will be accomplished through contracted gillnetting, to be completed by Hickey Brothers Research, LLC. Gillnetting will occur for 10 days in the spring and fall of each year of the project (2020-2022), which will target fish during times when they are concentrated after ice-off (spring) and during spawning (fall). Netting locations will be guided by IDFG acoustic telemetry data. Currently, IDFG is tracking 20 adult and 20 juvenile Lake Trout implanted with acoustic transmitters to determine seasonal habitat use and spawning locations. Hickey Brothers Research, LLC will utilize six different mesh sizes to capture and remove Lake Trout from Stanley Lake. Gillnet mesh size will range in half inch increments from 2.0” to 4.5” stretch mesh to capture juvenile and adult Lake Trout. Approximately 8,100’ of gill net will be deployed and retrieved daily, for a total of fishing effort of 162,000’ lineal feet of gillnet over each spring/fall work period.

Project Benefit    


The removal of fertile Lake Trout from Stanley Lake will significantly reduce the risk of Lake Trout colonization and establishment in Sockeye salmon recovery lakes (Redfish, Alturas, and Pettit). This will protect nearly 1,200 hectares of critical spawning and rearing habitat for Sockeye salmon recovery in the Sawtooth Valley.

Accomplishments

Metric Completed Originally
Proposed
Instream Habitat
  Stream Miles Treated .86

Funding Details

SourceFunds
PCSRF$215,115
Other$55,111
In-Kind Other$30,165
Report Total:$300,391


Project Map



Worksites

WS-1    


  • Worksite Identifier: WS-1
  • Start Date: 05/15/2020
  • End Date: 11/30/2022
Area Description
Stanley Lake

Location Information

  • Basin: Salmon
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: Idaho
  • Recovery Domain: Interior Columbia
  • Latitude: 44.244
  • Longitude: -115.0566

ESU

  • Snake River Sockeye Salmon ESU

Map

Photos

Metrics

Metrics
  • C.0 Salmonid Habitat Restoration and AcquisitionY (Y/N)
    •      . . C.0.a Habitat restoration and acquisition funding .00
    •      . . C.0.b Length of stream treated/protected
    •      . . C.0.c
      Project identified in a Plan or Watershed Assessment
    •      . . C.0.d.1 Project Monitoring (LOV)
    •      . . C.0.d.2 Monitoring Location (LOV)
    •      . . C.4 Instream Habitat ProjectY (Y/N)
      •      . . . . C.4.a Instream Habitat Funding
      •      . . . . C.4.b Total length of instream habitat treated
      •      . . . . C.4.i.1 Predator/competitor removalY (Y/N)
        •      . . . . . . C.4.i.2
          Predator/competitor name(s)
        •      . . . . . . C.4.i.3
          Method of predator/competitor removal
        •      . . . . . . C.4.i.4 Number of predators/competitors removedcontrolled
        •      . . . . . . C.4.i.5 Miles of stream treated for predators/competitors
        •      . . . . . . C.4.i.6 Acres of streambed treated for predators/competitors