I am a Supervisory Research Fish Biologist at the Columbia River Research Laboratory, Cook, WA. I began working on fisheries studies in 1998. My research has focused on Pacific salmon, dams and ecology in the Pacific Northwest. My expertise includes the use of telemetry systems to monitor juvenile and adult salmon and steelhead. I currently work on the Columbia, Willamette, and Yakima Rivers.
My research team conducts investigations into dam passage and survival for juvenile and adult Pacific salmon, assesses fish collection and passage devices, researches the ecological effects of high-head dams and reservoirs on anadromous fish, and evaluates various aspects of salmon and steelhead reintroductions upstream of impassable dams. I am currently working on studies that evaluate the effects of flow management on juvenile salmon survival, the responses of adult salmon and steelhead to trap-and-haul, assessment of dam-passage survival of juvenile salmon, and developing methods to estimate survival of salmon fry in reservoirs. My research is highly collaborative. I work closely with Tribal, State and Federal partners to provide unbiased science for use by a diverse group of stakeholders in several watersheds in the western United States.
Science and Products
Scientific Support of Salmon and Steelhead Reintroductions in Impounded River Basins of the Pacific Northwest
Steelhead and Spring Chinook Adult Spawning Migration Study in the Klickitat River (Washington)
Science and Products
- Publications
- Science
Scientific Support of Salmon and Steelhead Reintroductions in Impounded River Basins of the Pacific Northwest
Salmon and steelhead populations in the Pacific Northwest were severely affected by hydropower development that occurred during the first half of the 20th century. Impassable dams were constructed on many rivers throughout the region which prevented returning adult salmonids from accessing important habitats where spawning and rearing historically occurred. In the past two decades resource...Steelhead and Spring Chinook Adult Spawning Migration Study in the Klickitat River (Washington)
Fishery biologists from the U.S. Geological Survey are cooperating with Yakama Nation fishery biologists and technicians to conduct a migration behavior study of returning adult steelhead and spring Chinook using radio telemetry. - Multimedia
- News
*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