This is a landscape photo of the Klamath River with mountains on either side of the photo. The Western Fisheries Research Center is researching the effects of flow management before and after dam removal on juvenile Chinook salmon survival to the ocean.
Summer M Burdick
Summer Burdick is a Research Fish Biologist and team lead specializing in the effects of water and land management on commercially important and endangered fish species. She leads a team that primarily uses acoustic and PIT telemetry to study fish movement and population dynamics, offering valuable insights for managing water resources and supporting species survival.
Summer’s research addresses key issues affecting fish populations, particularly those influenced by water management practices. She and her team examine how factors like water flow, temperature, and timing of releases impact the life cycles of important fish species. Using advanced telemetry techniques, they study fish movement, survival, and population dynamics to inform management strategies that protect aquatic ecosystems. Their findings guide water delivery decisions, ensuring practices support fish populations without harm.
As team lead, Summer manages research projects, collaborates with partnering agencies, and designs studies. She works closely with partners to refine research goals and ensure alignment with broader conservation efforts. In addition to overseeing study execution and data analysis, she communicates results through reports, manuscripts, and presentations. Summer’s work is critical for understanding how water and land management practices affect fish populations and informs decision-making for water management.
Key Research Areas
1. Understanding the Lost River and Shortnose Sucker and Water Management
A key focus of Summer’s work is investigating how water management in reservoirs impacts the endangered Lost River and Shortnose sucker. These species, native to the Klamath Basin, faces significant threats from altered water delivery and flow regulation. Summer and colleagues use PIT and acoustic telemetry to track the movements and survival rates of adult suckers, studying how water management affects spawning success.
2. Juvenile Chinook Salmon Survival and Migration
Summer also leads research on the effects of river flow management on juvenile Chinook salmon. These commercially important fish rely on specific river conditions for migration. The goal is to identify water management practices that can enhance salmon survival, especially during critical migration periods, and contribute to long-term species health.
3. Fish Entrapment in Irrigation Canals
Another aspect of Summer’s research is understanding fish entrainment in irrigation systems in the San Francisco-San Joaquin Delta. Juvenile Chinook salmon can become entrained in irrigation canals, where they face poor survival conditions. They also monitor and evaluate unique technologies used to deter fish from entering irrigation canals, including a bioacoustic fish fence (BAFF). Their work helps ensure that water can be delivered to municipalities and farms while minimizing the impact on endangered and commercially viable salmon runs.
4. Cold Water Refugia and Chinook Salmon
Summer’s team investigating how long and under what conditions juvenile salmon use pockets of cold water on their seaward summer-time migration. This information should lead to a better understanding of how important these areas are for populations of Chinook salmon.
5. Conservation of Desert Fish Species
Summer’s research aims to understand populations dynamics of some of rarest species on earth.
Professional Experience
2021-2025 - Research Fish Biologist/Team Lead U.S. Geological Survey, Western Fisheries Research Center, Columbia River Research Station
2021 - Supervisory Fish Biologist/Acting Director of the Klamath Falls Field Station, Western Fisheries Research Center, U.S. Geological Survey
2009-2021 - Fish Biologist/Team Lead, U.S. Geological Survey, Western Fisheries Research Center, Klamath Falls Field Station, Klamath Falls, OR
2006-2009 - Fish Biologist, U.S. Geological Survey, Western Fisheries Research Center, Klamath Falls Field Station, Klamath Falls, OR
2005-2006 - Marine Fisheries Research Fellow, North Carolina State University and North Carolina Division of Marine Fisheries, Raleigh, NC
2003-2005 - Research Assistant, North Carolina State Fish and Wildlife Cooperative Research Unit, Raleigh, NC
2002 - Biologist and Crew Lead, Washington Department of Fish and Wildlife
2001-2002 - Scientific Technician, Washington Department of Fish and Wildlife
2000 - Resource Technician, Washington Department of Natural Resources
1999-2000 - Fisheries Technician, Squaxin Tribe Natural Resources
Education and Certifications
M.S. 2005. Fisheries and Wildlife Science with minor in Statistics, North Carolina State University, Raleigh, NC
B.S. 1999. Ecology, the Evergreen State College, Olympia, WA
Affiliations and Memberships*
American Fisheries Society (National, Oregon, and Washington-BC Chapter)
Desert Fishes Council
Oregon Lakes Association
Science and Products
KFFS Lead Scientists and Areas of Expertise
Species Studied at the Klamath Falls Field Station
White River spinedace (Lepidomeda albivallis) and White River desert suckers (Catostomus clarki) - KFFS
Tribal Collaboration - KFFS
Water Quality Effects on Fish
Lost River Sucker (Deltistes luxatus) - KFFS
Shortnose Sucker (Chasmistes brevirostris) - KFFS
Klamath Largescale Sucker (Catostomus snyderi) - KFFS
Data on the capture, tagging, and detection of White River Spinedace in the Flag Springs Complex, Nevada 2020-2022
Detections, Physical Captures, Water Quality, and Fish Health Data Related to Suckers Held in Four Net Pens in Upper Klamath Lake, 2019
Detections, Physical Captures, Water Quality, and Fish Health associated with Endangered Suckers in Three Net Pens in Upper Klamath Lake, 2020
Marginal increment and age data from fin rays of endangered suckers
Data from 2018 Experiment on Effects of Temperature on Survival and Growth of Juvenile Lost River Suckers (Deltistes luxatus) naturally exposed to Ichthyobodo spp
Data for Trap Net Captured Juvenile Lost River and Shortnose Suckers from Upper Klamath Lake, Oregon
This is a landscape photo of the Klamath River with mountains on either side of the photo. The Western Fisheries Research Center is researching the effects of flow management before and after dam removal on juvenile Chinook salmon survival to the ocean.
Collin Smith and Georgia Martin are inserting passive integrated transponders in juvenile Chinook Salmon at Fall Creek Hatchery, California to track their movements. Data are collected for each fish, including length, weight, and the individual number of the inserted tag.
Collin Smith and Georgia Martin are inserting passive integrated transponders in juvenile Chinook Salmon at Fall Creek Hatchery, California to track their movements. Data are collected for each fish, including length, weight, and the individual number of the inserted tag.
This photo shows the California Department of Fish and Wilflife’s screw trap on the lower Shasta River, where Western Fisheries Research Center (WFRC) scientists surgically implant acoustic telemetry tags and passive integrated transponder tags into juvenil Chinook salmon collected at this site.
This photo shows the California Department of Fish and Wilflife’s screw trap on the lower Shasta River, where Western Fisheries Research Center (WFRC) scientists surgically implant acoustic telemetry tags and passive integrated transponder tags into juvenil Chinook salmon collected at this site.
In this photo a USGS Biological Science Technician Brittany Graham is surgically implanting an acoustic telemetry tag into a juvenile salmon on the banks of the lower Shasta River. The Western Fisheries Research Center (WFRC) uses fish with acoustic transmitters to track fish movements and estimate survival. This information provides water managers with ro
In this photo a USGS Biological Science Technician Brittany Graham is surgically implanting an acoustic telemetry tag into a juvenile salmon on the banks of the lower Shasta River. The Western Fisheries Research Center (WFRC) uses fish with acoustic transmitters to track fish movements and estimate survival. This information provides water managers with ro
The Western Fisheries Research Center (WFRC) is partnering with the U.S. Bureau of Reclamation to discuss ways to monitor fish passage at Keno Dam. With the recent removal of four mainstem dams along the Klamath River, Keno Dam now stands as the most downstream fish passage challenge , and the first major obstacle for migrating salmon returning upstream.
The Western Fisheries Research Center (WFRC) is partnering with the U.S. Bureau of Reclamation to discuss ways to monitor fish passage at Keno Dam. With the recent removal of four mainstem dams along the Klamath River, Keno Dam now stands as the most downstream fish passage challenge , and the first major obstacle for migrating salmon returning upstream.

This is Keno Dam, in Klamath, OR. The Western Fisheries Research Center (WFRC) is doing work here to ensure proper fish passage is functioning and to provide science to help better address the water needs of the Klamath River Basin.
This is Keno Dam, in Klamath, OR. The Western Fisheries Research Center (WFRC) is doing work here to ensure proper fish passage is functioning and to provide science to help better address the water needs of the Klamath River Basin.
White River spinedace. Photo taken Wayne E. Kirch Wildlife Management Area, Lund, NV.
White River spinedace. Photo taken Wayne E. Kirch Wildlife Management Area, Lund, NV.
White River spinedace. Photo taken by Summer Burdick, USGS, Klamath Falls Field Station.
White River spinedace. Photo taken by Summer Burdick, USGS, Klamath Falls Field Station.
White River desert sucker. Photo taken Wayne E. Kirch Wildlife Management Area, Lund, NV.
White River desert sucker. Photo taken Wayne E. Kirch Wildlife Management Area, Lund, NV.

Passive integrated transponder detection antenna located in the Flag Springs Complex in eastern Nevada. This is the only place on earth where White River spinedace still exist.
Passive integrated transponder detection antenna located in the Flag Springs Complex in eastern Nevada. This is the only place on earth where White River spinedace still exist.
White River spinedace. Photo taken Wayne E. Kirch Wildlife Management Area, Lund, NV.
White River spinedace. Photo taken Wayne E. Kirch Wildlife Management Area, Lund, NV.

Trap net set to capture White River Spinedace in the south fork of Flag Spring in Wayne E. Kirch Wildlife Management Area in southeast Nevada
linkUSGS is working with the Nevada Department of Wildlife and the U.S. Fish and Wildlife Service to capture White River Spinedace with trap nets in the Flag Springs complex as part of a mark-recapture study. The goals of this study are to estimate seasonal survival and examine seasonal movements indicative of spawning activity for this rare species.
Trap net set to capture White River Spinedace in the south fork of Flag Spring in Wayne E. Kirch Wildlife Management Area in southeast Nevada
linkUSGS is working with the Nevada Department of Wildlife and the U.S. Fish and Wildlife Service to capture White River Spinedace with trap nets in the Flag Springs complex as part of a mark-recapture study. The goals of this study are to estimate seasonal survival and examine seasonal movements indicative of spawning activity for this rare species.
Effect of oxygenation and location on survival and growth of endangered Lost River Suckers in net pens
Adult green sturgeon (Acipenser medirostris) movements in the Sacramento–San Joaquin River Delta, California, December 2020–January 2023
A machine learning tool for design of behavioral fish barriers in the Sacramento-San Joaquin River Delta
Does release size into net-pens affect survival of captively reared juvenile endangered suckers in Upper Klamath Lake?
Endangered Klamath suckers
Validating a non-lethal method of aging endangered juvenile Lost River and Shortnose Suckers
Growth, survival, and cohort formation of juvenile Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2020 monitoring report
Water and endangered fish in the Klamath River Basin: Do Upper Klamath Lake surface elevation and water quality affect adult Lost River and Shortnose Sucker survival?
Growth, survival, and cohort formation of juvenile Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2019 Monitoring Report
Water quality, instream habitat, and the distribution of suckers in the upper Lost River watershed of Oregon and California, summer 2018
Dynamics of endangered sucker populations in Clear Lake Reservoir, California
Survival and growth of suckers in mesocosms at three locations within Upper Klamath Lake, Oregon, 2018
Science and Products
KFFS Lead Scientists and Areas of Expertise
Species Studied at the Klamath Falls Field Station
White River spinedace (Lepidomeda albivallis) and White River desert suckers (Catostomus clarki) - KFFS
Tribal Collaboration - KFFS
Water Quality Effects on Fish
Lost River Sucker (Deltistes luxatus) - KFFS
Shortnose Sucker (Chasmistes brevirostris) - KFFS
Klamath Largescale Sucker (Catostomus snyderi) - KFFS
Data on the capture, tagging, and detection of White River Spinedace in the Flag Springs Complex, Nevada 2020-2022
Detections, Physical Captures, Water Quality, and Fish Health Data Related to Suckers Held in Four Net Pens in Upper Klamath Lake, 2019
Detections, Physical Captures, Water Quality, and Fish Health associated with Endangered Suckers in Three Net Pens in Upper Klamath Lake, 2020
Marginal increment and age data from fin rays of endangered suckers
Data from 2018 Experiment on Effects of Temperature on Survival and Growth of Juvenile Lost River Suckers (Deltistes luxatus) naturally exposed to Ichthyobodo spp
Data for Trap Net Captured Juvenile Lost River and Shortnose Suckers from Upper Klamath Lake, Oregon
This is a landscape photo of the Klamath River with mountains on either side of the photo. The Western Fisheries Research Center is researching the effects of flow management before and after dam removal on juvenile Chinook salmon survival to the ocean.
This is a landscape photo of the Klamath River with mountains on either side of the photo. The Western Fisheries Research Center is researching the effects of flow management before and after dam removal on juvenile Chinook salmon survival to the ocean.
Collin Smith and Georgia Martin are inserting passive integrated transponders in juvenile Chinook Salmon at Fall Creek Hatchery, California to track their movements. Data are collected for each fish, including length, weight, and the individual number of the inserted tag.
Collin Smith and Georgia Martin are inserting passive integrated transponders in juvenile Chinook Salmon at Fall Creek Hatchery, California to track their movements. Data are collected for each fish, including length, weight, and the individual number of the inserted tag.
This photo shows the California Department of Fish and Wilflife’s screw trap on the lower Shasta River, where Western Fisheries Research Center (WFRC) scientists surgically implant acoustic telemetry tags and passive integrated transponder tags into juvenil Chinook salmon collected at this site.
This photo shows the California Department of Fish and Wilflife’s screw trap on the lower Shasta River, where Western Fisheries Research Center (WFRC) scientists surgically implant acoustic telemetry tags and passive integrated transponder tags into juvenil Chinook salmon collected at this site.
In this photo a USGS Biological Science Technician Brittany Graham is surgically implanting an acoustic telemetry tag into a juvenile salmon on the banks of the lower Shasta River. The Western Fisheries Research Center (WFRC) uses fish with acoustic transmitters to track fish movements and estimate survival. This information provides water managers with ro
In this photo a USGS Biological Science Technician Brittany Graham is surgically implanting an acoustic telemetry tag into a juvenile salmon on the banks of the lower Shasta River. The Western Fisheries Research Center (WFRC) uses fish with acoustic transmitters to track fish movements and estimate survival. This information provides water managers with ro
The Western Fisheries Research Center (WFRC) is partnering with the U.S. Bureau of Reclamation to discuss ways to monitor fish passage at Keno Dam. With the recent removal of four mainstem dams along the Klamath River, Keno Dam now stands as the most downstream fish passage challenge , and the first major obstacle for migrating salmon returning upstream.
The Western Fisheries Research Center (WFRC) is partnering with the U.S. Bureau of Reclamation to discuss ways to monitor fish passage at Keno Dam. With the recent removal of four mainstem dams along the Klamath River, Keno Dam now stands as the most downstream fish passage challenge , and the first major obstacle for migrating salmon returning upstream.

This is Keno Dam, in Klamath, OR. The Western Fisheries Research Center (WFRC) is doing work here to ensure proper fish passage is functioning and to provide science to help better address the water needs of the Klamath River Basin.
This is Keno Dam, in Klamath, OR. The Western Fisheries Research Center (WFRC) is doing work here to ensure proper fish passage is functioning and to provide science to help better address the water needs of the Klamath River Basin.
White River spinedace. Photo taken Wayne E. Kirch Wildlife Management Area, Lund, NV.
White River spinedace. Photo taken Wayne E. Kirch Wildlife Management Area, Lund, NV.
White River spinedace. Photo taken by Summer Burdick, USGS, Klamath Falls Field Station.
White River spinedace. Photo taken by Summer Burdick, USGS, Klamath Falls Field Station.
White River desert sucker. Photo taken Wayne E. Kirch Wildlife Management Area, Lund, NV.
White River desert sucker. Photo taken Wayne E. Kirch Wildlife Management Area, Lund, NV.

Passive integrated transponder detection antenna located in the Flag Springs Complex in eastern Nevada. This is the only place on earth where White River spinedace still exist.
Passive integrated transponder detection antenna located in the Flag Springs Complex in eastern Nevada. This is the only place on earth where White River spinedace still exist.
White River spinedace. Photo taken Wayne E. Kirch Wildlife Management Area, Lund, NV.
White River spinedace. Photo taken Wayne E. Kirch Wildlife Management Area, Lund, NV.

Trap net set to capture White River Spinedace in the south fork of Flag Spring in Wayne E. Kirch Wildlife Management Area in southeast Nevada
linkUSGS is working with the Nevada Department of Wildlife and the U.S. Fish and Wildlife Service to capture White River Spinedace with trap nets in the Flag Springs complex as part of a mark-recapture study. The goals of this study are to estimate seasonal survival and examine seasonal movements indicative of spawning activity for this rare species.
Trap net set to capture White River Spinedace in the south fork of Flag Spring in Wayne E. Kirch Wildlife Management Area in southeast Nevada
linkUSGS is working with the Nevada Department of Wildlife and the U.S. Fish and Wildlife Service to capture White River Spinedace with trap nets in the Flag Springs complex as part of a mark-recapture study. The goals of this study are to estimate seasonal survival and examine seasonal movements indicative of spawning activity for this rare species.
Effect of oxygenation and location on survival and growth of endangered Lost River Suckers in net pens
Adult green sturgeon (Acipenser medirostris) movements in the Sacramento–San Joaquin River Delta, California, December 2020–January 2023
A machine learning tool for design of behavioral fish barriers in the Sacramento-San Joaquin River Delta
Does release size into net-pens affect survival of captively reared juvenile endangered suckers in Upper Klamath Lake?
Endangered Klamath suckers
Validating a non-lethal method of aging endangered juvenile Lost River and Shortnose Suckers
Growth, survival, and cohort formation of juvenile Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2020 monitoring report
Water and endangered fish in the Klamath River Basin: Do Upper Klamath Lake surface elevation and water quality affect adult Lost River and Shortnose Sucker survival?
Growth, survival, and cohort formation of juvenile Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2019 Monitoring Report
Water quality, instream habitat, and the distribution of suckers in the upper Lost River watershed of Oregon and California, summer 2018
Dynamics of endangered sucker populations in Clear Lake Reservoir, California
Survival and growth of suckers in mesocosms at three locations within Upper Klamath Lake, Oregon, 2018
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government