Fisheries Program

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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.

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Imperiled Species Research

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.

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Drought and Ecological Flows

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.

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View Our Fisheries Research

View Our Fisheries Research

USGS scientists study life history, population ecology, and conservation and restoration strategies for aquatic species and the habitats that sustain them.

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News

Date published: April 30, 2021

Media Alert: Portions of Missouri River to change color temporarily as USGS releases dye to study endangered pallid sturgeon

Scientists from the U.S. Geological Survey will conduct a dye-trace assessment. For a few hours during this research, several miles of the Missouri river will appear reddish due to non-toxic dye. The red color will dissipate rapidly and will disappear after it travels several miles downstream. During the study, USGS will deploy several boats on the river to monitor how and where the dye moves

Date published: April 7, 2021

USGS, Southern Illinois University researchers advance genome mapping for critically-endangered sturgeon

This scientific advancement can lead to the development of new genetic markers that will help scientists distinguish between pallid sturgeon and the shovelnose sturgeon, another sturgeon species that looks similar but is more common.

Date published: March 13, 2017

Water managers explore new strategies to protect fish in California’s Bay Delta

The water in the Delta arrives primarily from the Sacramento and San Joaquin Rivers, supplying water for more than 22 million people. This water source supports California’s trillion-dollar economy—the sixth largest in the world—and its $27 billion agricultural industry.

Publications

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Year Published: 2021

Lower Granite Reservoir biological monitoring at 2015 disposal site

No abstract available.

Hemingway, Rulon J; Tiffan, Kenneth

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Year Published: 2021

Effects of tidally varying river flow on entrainment of juvenile salmon into Sutter and Steamboat Sloughs

Survival of juvenile salmonids in the Sacramento–San Joaquin Delta (Delta) varies by migration route, and thus the proportion of fish that use each route affects overall survival through the Delta. Understanding factors that drive routing at channel junctions along the Sacramento River is therefore critical to devising management strategies that...

Romine, Jason G.; Perry, Russell; Stumpner, Paul; Blake, Aaron R.; Burau, Jon R.

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Year Published: 2021

Long-term shedding from fully convalesced individuals indicates that Pacific herring are a reservoir for viral hemorrhagic septicemia virus

Processes that allow viral hemorrhagic septicemia (VHS) virus to persist in the marine environment remain enigmatic, owing largely to the presence of covert and cryptic infections in marine fishes during typical sub-epizootic periods. As such, marine host reservoirs for VHS virus have not been fully demonstrated, nor have the mechanism(s) by which...

Hershberger, Paul; Mackenzie, Ashley; Gregg, Jacob L.; Wilmot, M. D.; Powers, Rachel L.; Purcell, Maureen K.