Columbia Basin Fish and Wildlife Program Columbia Basin Fish and Wildlife Program
SOW Report
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Pacific Lamprey Conservation Initiative
Province Subbasin %
Basinwide - 100.00%
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Lamprey Specific Electrofishing Techniques: Impacts to target and non-target species
Larval lamprey are sampled and collected primarily using lamprey-specific electrofishing (LSEF) gear or settings.. Standard electrofishing (SEF) has been a common survey technique since the 1950s and involves a complex combination of physics, physiology, and behavior. LSEF is newer, equally complex, and less studied. Developed specifically to collect larvae burrowed in sediment, LSEF typically uses a 2-phased approach: the first phase (tickle) draws larvae from the substrate and the second phase (stun) immobilizes them facilitate netting. The scientific literature on SEF suggests that few fish are likely to be killed but high proportions may be injured or have altered behavior or growth. Few studies have evaluated impacts of LSEF on lamprey or non-target species (especially ESA-listed species) that may be exposed during larval lamprey surveys. Recent lamprey restoration efforts have increased LSEF use, but scientifically derived guidance to inform permitting decisions and field applications is lacking. The project objectives are 1) to evaluate effects of LSEF settings on the injury and survival of larval lamprey and juvenile salmon under controlled laboratory conditions  and 2) to provide direction in the Best Management Guidelines for Inwater Work on effective collection approaches that limit negative impacts to target and non-target species.

Lethal Air Temperatures for Dewatered Lamprey
Dewatering events occur routinely throughout the range of Pacific Lamprey and each event may kill many thousands of larvae . Such events can have devasting impacts to populations because larvae can be densely concentrated, with multiple species and age classes in the same area. The Best Management Guidelines for lampreys during in-water work recommends actions to limit negative impacts to lamprey. The goal of this project is to relate air temperature and mortality of dewatered larval lamprey to improve the guidance in the BMGs, specifically, adding guidance on the maximum recommended air temperature under which dewatering can safely be conducted. Solar radiation (UV) deserves consideration along with air temperature as both likely contribute to larval mortality due to desiccation. The project will test full exposure to sunlight (unshaded) and diffuse (shaded) exposure at each test air temperature to understand the role of UV exposure and provide BMG guidance that can be tailored to a range of real-world dewatering locations. In the future, dewatering events will continue because in-water work is an ongoing need and climate change my increase lethal effects. The best approach to protect lamprey is scientifically defensible information to guide dewatering procedures that can be applied throughout the species’ range.
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* Expenditures data includes accruals and are based on data through 28-Feb-2023.

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Cost Reimbursement (CNF)
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Full Name Organization Write Permission Contact Role Email Work Phone
Jennifer Harlan US Geological Survey (USGS) No Administrative Contact (509) 538-2983
David Kaplowe Bonneville Power Administration Yes F&W Approver (503) 230-5365
Marty Liedtke US Geological Survey (USGS) Yes Contract Manager (509) 538-2963
Timothy Ludington Bonneville Power Administration Yes COTR (503) 230-4988
Khanida Mote Bonneville Power Administration Yes Contracting Officer (503) 230-4599
Jessica Power Bonneville Power Administration Yes CO Assistant (503) 230-4023
William Stinnette Bonneville Power Administration Yes Env. Compliance Lead (503) 230-4643
Steve Waste US Geological Survey (USGS) No Supervisor (509) 538-2299x236

Viewing of Work Statement Elements

Deliverable Title WSE Sort Letter, Number, Title Start End Complete
EC Complete A: 165. Provide Documentation for EC 12/31/2023 06/10/2022
Produce accessible, error-checked datasets B: 157. LSEF - Evaluate LSEF voltage and duration 12/31/2023
Deliverable: An accessible, error-checked data set with metadata C: 162. LSEF - Data Analysis 12/31/2023
Produce accessible, error-checked datasets D: 157. Dewatering Air Temps - Summarize air and water temps across the region and conduct experiments 12/31/2023
Deliverable: An accessible, error-checked data set with metadata E: 162. Dewatering Air Temps - Data Analysis 12/31/2023
Make presentations to regional partners to share findings. F: 161. Disseminate Results to Regional Partners 12/31/2023
Completed Annual Report G: 132. Submit Progress Report for the period May 2022 to Dec 2023 12/31/2023

Viewing of Implementation Metrics
Viewing of Environmental Metrics Customize

Primary Focal Species Work Statement Elements
Lamprey, Pacific (Entosphenus tridentata)
  • 2 instances of WE 157 Collect/Generate/Validate Field and Lab Data
  • 1 instance of WE 161 Disseminate Raw/Summary Data and Results
  • 2 instances of WE 162 Analyze/Interpret Data

Sort WE ID WE Title NEPA NOAA USFWS NHPA Has Provisions Inadvertent Discovery Completed
A 165 Provide Documentation for EC
B 157 LSEF - Evaluate LSEF voltage and duration 06/21/2022
C 162 LSEF - Data Analysis
D 157 Dewatering Air Temps - Summarize air and water temps across the region and conduct experiments 06/21/2022
E 162 Dewatering Air Temps - Data Analysis
F 161 Disseminate Results to Regional Partners
G 132 Submit Progress Report for the period May 2022 to Dec 2023
H 185 Periodic Status Reports for BPA