Images

Sampling for European green crab environmental DNA in Pauls Slough in Willapa Bay, Washington, as part of a study that aims to increase the capacity for early detection monitoring and biosurveillance of invasive green crab.

Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington, as part of a study that aims to increase the capacity for early detection monitoring and biosurveillance of invasive green crab.

Field work conducted by the Columbia River Research Laboratory on the Wind River.  The image shows opening day of collecting and PIT tagging juvenile steelhead on a tributary of the Wind River. Ian Jezorek is conducting the PIT tagging and Brad Liedtke is entering the data.

Brian Ekstrom and Lance Downing of USGS are pulling a beach seine to collect juvenile fish for monitoring at a restoration site on the lower Columbia River. The restoration site was created with dredge material in October of 2020 and USGS is monitoring juvenile salmon use, community assemblage, and predator presence.

USGS scientists surgically implanting acoustic transmitters into juvenile Chinook salmon on the Shasta River, California.  Study fish are tracked in the Shasta and Klamath Rivers as they migrate to the Pacific Ocean.  Collected data are used to determine fish survival and migration behaviors.

Photograph of a fish release at the Keller Ferry Marina, Lake Roosevelt, Lincoln County, Washington.

USGS scientist, Jill Hardiman, working on a screw trap on the White Salmon River to assess anadromous fish recolonization following removal of a large dam.

Photograph of the Sanpoil River in northeast Washington State.  The Sanpoil River is upstream of Grand Coulee and is a tributary of the Columbia River.

USGS researchers from the Western Fisheries Research Center, Columbia River Research Laboratory and the Oregon Water Science Center recently completed a study that reviewed existing fisheries datasets and provided an overview of research approaches for estimating habitat availability and carrying capacity of Pacific salmon in the Willamette River Basin.

Sampling Striped Bass for diet items in the San Francisco Estuary.

Hells Canyon on the Snake River.

The Cle Elum River, a tributary of the Yakima River in Washington state. Sockeye salmon reintroduction efforts were initiated in the Cle Elum River by the Yakama Nation and Washington Department of Fish and Wildlife in 2009.

Sockeye salmon preparing to spawn upstream of Cle Elum Dam, Washington.

Shoreline traps in Lookout Point Reservoir, Oregon.

Juvenile Chinook salmon on the Middle Fork Willamette River, Oregon.

Clearing snow from solar panels which provide power to an instream Passive Integrated Transponder tag detection system in the Wind River, WA. The system detects tagged juvenile and adult Steelhead for population assessment and migratory data.

Sam Doak (center) and scientists from the Confederated Tribes and Bands of the Yakama Nation set up block nets to perform population estimates of fish in a pool on Rock Creek, WA. 

Image of the Western Fisheries Research Center, Columbia River Research Laboratory, Cook, WA

Taking a break in the fog on the San Joaquin River while trawling aboard the USGS Research Vessel Munson II.

Underwater image of Juvenile Chinook salmon in Cougar Reservoir in the Willamette Basin.

Antennas deployed in the Wind River to monitor movements of fish that have been tagged with Passive Integrated Transponder (PIT) tags.  The need to track fish movements in large streams over extensive areas has extended this current technology to new levels.