Our fisheries researchers are world-class scientists. They conduct cutting-edge research to provide fisheries resource managers the scientific information they need to protect, restore, and enhance our Nation’s fisheries and their habitats.
Imperiled Species Research
Forty percent of all fish species in North America are at risk of extinction. USGS research is crucial to protect and manage at-risk species and healthy fish populations into the future.Learn More
Drought and Ecological Flows
As part of the USGS Fisheries program, ecological flows, or the relationships between quality, quantity, and timing of water flows and ecological response of aquatic biota and ecosystems; and related ecosystem services are being investigated.Find Out More
USGS Expertise and Science Leads to Ballast Water Management Solutions
USGS and Chinese Fish Health Specialists Meet in the People's Republic of China to Discuss Fish Health
Scientists Continue to Gain Insights into Endangered Suckers in the Klamath Basin
Juvenile salmonid monitoring following removal of Condit Dam in the White Salmon River Watershed, Washington, 2017
Condit Dam, at river kilometer 5.3 on the White Salmon River, Washington, was breached in 2011, and removed completely in 2012, providing anadromous salmonids with the opportunity to recolonize habitat blocked for nearly 100 years. Prior to dam removal, a multi-agency workgroup concluded that the preferred salmonid restoration alternative was to...Jezorek, Ian G.; Hardiman, Jill M.
Ichthyophonus in sport-caught groundfishes from southcentral Alaska
This report of Ichthyophonus in common sport-caught fishes throughout the marine waters of southcentral Alaska represents the first documentation of natural Ichthyophonus infections in lingcod Ophiodon elongates and yelloweye rockfish Sebastes ruberrimus. In addition, the known geographic range of ...Harris, Bradley P.; Webster, Sarah R.; Wolf, Nathan; Gregg, Jacob L.; Hershberger, Paul
Estimating freshwater productivity, overwinter survival, and migration patterns of Klamath River Coho Salmon
An area of great importance to resource management and conservation biology in the Klamath Basin is balancing water usage against the life history requirements of threatened Coho Salmon. One tool for addressing this topic is a freshwater dynamics model to forecast Coho Salmon productivity based on environmental inputs. Constructing such a...Manhard, Christopher V.; Som, Nicholas A.; Perry, Russell W.; Faukner, Jimmy; Soto, Toz