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USGS Biologist prepares to artificially spawn a female lake sturgeon in the laboratory at the Columbia Environmental Research Center.
USGS Biologist prepares to artificially spawn a female lake sturgeon in the laboratory at the Columbia Environmental Research Center.
Research hydrologist Dr. Susannah Erwin retrieves fluorometer from the Upper Missouri River to download dye trace data.
Research hydrologist Dr. Susannah Erwin retrieves fluorometer from the Upper Missouri River to download dye trace data.
USGS fish biologists launch at sunset on the Upper Missouri River for a night of sampling for larval pallid sturgeon.
USGS fish biologists launch at sunset on the Upper Missouri River for a night of sampling for larval pallid sturgeon.
A US Geological Survey hydroacoustic survey boat measures velocity profiles on the Upper Missouri River.
A US Geological Survey hydroacoustic survey boat measures velocity profiles on the Upper Missouri River.
Distribution of free embryos to boats in preparation for mass release.
Distribution of free embryos to boats in preparation for mass release.
A USGS scientist uses a remotely controlled "z-boat" to survey the experimental ponds at the Columbia Environmental Research Center.
A USGS scientist uses a remotely controlled "z-boat" to survey the experimental ponds at the Columbia Environmental Research Center.
USGS hydrologists prepare to deploy a BM-54 bed-material sampler on the Yellowstone River.
USGS hydrologists prepare to deploy a BM-54 bed-material sampler on the Yellowstone River.
A CERC pond being used for a sturgeon study is being mapped using an aDcp mounted on a River Ray.
A CERC pond being used for a sturgeon study is being mapped using an aDcp mounted on a River Ray.
USGS Biologist prepares to artificially spawn a female lake sturgeon in the laboratory at the Columbia Environmental Research Center.
USGS Biologist prepares to artificially spawn a female lake sturgeon in the laboratory at the Columbia Environmental Research Center.
Research hydrologist Dr. Susannah Erwin retrieves fluorometer from the Upper Missouri River to download dye trace data.
Research hydrologist Dr. Susannah Erwin retrieves fluorometer from the Upper Missouri River to download dye trace data.
USGS fish biologists launch at sunset on the Upper Missouri River for a night of sampling for larval pallid sturgeon.
USGS fish biologists launch at sunset on the Upper Missouri River for a night of sampling for larval pallid sturgeon.
A US Geological Survey hydroacoustic survey boat measures velocity profiles on the Upper Missouri River.
A US Geological Survey hydroacoustic survey boat measures velocity profiles on the Upper Missouri River.
Distribution of free embryos to boats in preparation for mass release.
Distribution of free embryos to boats in preparation for mass release.
A USGS scientist uses a remotely controlled "z-boat" to survey the experimental ponds at the Columbia Environmental Research Center.
A USGS scientist uses a remotely controlled "z-boat" to survey the experimental ponds at the Columbia Environmental Research Center.
USGS hydrologists prepare to deploy a BM-54 bed-material sampler on the Yellowstone River.
USGS hydrologists prepare to deploy a BM-54 bed-material sampler on the Yellowstone River.
A CERC pond being used for a sturgeon study is being mapped using an aDcp mounted on a River Ray.
A CERC pond being used for a sturgeon study is being mapped using an aDcp mounted on a River Ray.