Date requested: 3/8/2017 3:22:53 PM

Requester: Brett Bowersox

Requester email: brett.bowersox@idfg.idaho.gov

Request status: Implemented

Action and Files
Target group Site Action Tags for Action Total Tags Released Start Date End date Additional Info
Potlatch River wild steelhead GRA Collect all 15 3/3/2017 6/1/2017
Title: SY 2017 Potlatch River wild Steelhead Radio-telemetry
Project Lead: Brett Bowersox
Agency: IDFG
Project Number: 006 15CW Potlatch River Steelhead Monitoring and Evaluation
Funding Agency: NOAA
Project Objectives: The objectives for the Potlatch River Steelhead Monitoring and Evaluation (PRSME) project are as follows: 1. Assess steelhead/rainbow trout production and productivity within index tributaries in the Potlatch River Drainage. a. Determine juvenile steelhead outmigration timing and emigration rate. b. Estimate adult steelhead escapement into index tributaries within the Potlatch River (Big Bear Creek drainage and East Fork Potlatch River). 2. Compare juvenile steelhead density and growth rates in control and treatment reaches in the lower and upper Potlatch River drainage. 3. Monitor change in habitat variables associated with habitat restoration actions in the Potlatch River drainage, specifically in control and treatment areas in the upper and lower drainage. 4. Describe steelhead life history strategies exhibited within the Potlatch River drainage. 5. Provide a monitoring component to the numerous habitat restoration projects currently ongoing within the Potlatch River drainage. The Sort by Code request and associated telemetry effort specifically addresses objectives 4 and 5. In the lower Potlatch River passage barrier removal to open up additional spawning and rearing habitat has been identified as a high priority. Three major barrier removal projects are being addressed or evaluated; Dutch Flat Dam (removed in 2013), Big Meadows Creek Culvert (scheduled for removal 2015), and Big Bear Creek Falls (evaluation phase). The ability to radio-track known destination adult steelhead will address fish passage potential under varying flow conditions pre-removal as well as fish re-colonization above barriers post-removal. In addition, we will address life history data gaps that currently exist for Potlatch River adult steelhead. There is limited data available regarding Potlatch River adult steelhead mainstem Clearwater River migration characteristics and Lower Granite Reservoir residency time. Also, limited data is available on adult steelhead spawning distribution in the upper Potlatch River. Life history information gained through the radio-telemetry effort will assist monitoring and habitat restoration personnel on future project identification and prioritization. These radio-tagged fish will also be used in the Clearwater River steelhead radio-telemetry project being conducted by the University of Idaho and Idaho Department of Fish and Game.
Study Description: The Potlatch River steelhead Monitoring and Evaluation (PRSME) project was initiated in 2005 using Pacific Coastal Salmon Recovery Funds. In 2008, the project was expanded into the upper Potlatch River watershed using National Oceanic and Atmospheric Administration (NOAA) Fisheries Intensively Monitored Watershed Funds. The additional funds allowed work to occur simultaneously throughout the entire drainage. The expanded project in 2008 was initiated to assess steelhead Oncorhynchus mykiss production and productivity throughout the entire Potlatch River drainage.
Juvenile Description:
Smolt-to-Adult Ratio:
Collection Efficiency:
Adult Description: To improve our understanding of spawning habitat and life history strategies employed by wild adult Steelhead originating from the Potlatch River major spawning aggregation (Lower Mainstem Clearwater Population, Clearwater River MPG, Snake River DPS), we plan to radio tag (gastric implant) 40 known-Potlatch River origin adult steelhead at the Lower Granite Adult Trap. Separation by code will be used throughout the run (July 1, 2016 – June 30, 2017) to collect adult steelhead tagged as juveniles in the Potlatch River system. Standard handling and gastric radio tagging procedures will be consistent with on-going programs and methodologies currently employed by NOAA and IDFG staff at the Lower Granite Dam Adult Trap.
Certify: True