Custom-designed, automated, large-volume virus water sample filtration and collection system at Underwood Creek, WI.
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Custom-designed, automated, large-volume virus water sample filtration and collection system at Underwood Creek, WI.
Surficial sediment collection on Wilson Park Creek, Milwaukee, WI.
Surficial sediment collection on Wilson Park Creek, Milwaukee, WI.
Sunset on the Milwaukee River at Estabrook Park.
Sunset on the Milwaukee River at Estabrook Park.
White River at Hazelton IN - downstream view of channel
White River at Hazelton IN - downstream view of channel
White River at Hazelton, IN - downstream view of channel from bridge
White River at Hazelton, IN - downstream view of channel from bridge
USGS Hydrologic Technician Dan Thomas preparing to measure discharge using an acoustic doppler current profiler (ADCP) with a manned boat on the Red River at Oslo, MN (streamgage 05083500) on April 25, 2018. The ADCP measures water currents with sound, using a principle of sound waves called the Doppler effect.
USGS Hydrologic Technician Dan Thomas preparing to measure discharge using an acoustic doppler current profiler (ADCP) with a manned boat on the Red River at Oslo, MN (streamgage 05083500) on April 25, 2018. The ADCP measures water currents with sound, using a principle of sound waves called the Doppler effect.
Bedload sample collected from the Durand bridge.
Bedload sample collected from the Durand bridge.
View of Durand Bridge and sampling crew from boat during multibeam bathymetry survey.
View of Durand Bridge and sampling crew from boat during multibeam bathymetry survey.
Photograph of a Brewer's Blackbird nest with three eggs. Nest was found in Valley County, Montana near S. Bench Road.
Photograph of a Brewer's Blackbird nest with three eggs. Nest was found in Valley County, Montana near S. Bench Road.
Scientist at Indiana River collecting samples
Scientist at Indiana River collecting samples
Black River at Elyria, OH - high and fast moving water
Black River at Elyria, OH - high and fast moving water
Tanja Williamson and Shawn Meyer - UAS
Tanja Williamson and Shawn Meyer - UAS
Crayfish, Detroit River
![Fish on the lake-bottom at South Manitou Island Lake Micigan](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/Revised%20Snapshot%20South%20Manitou%20Tape%201%20%284%29.jpg?itok=DCb47w2V)
Fish on the lake-bottom at South Manitou Island Lake Micigan
Fish on the lake-bottom at South Manitou Island Lake Micigan
![Fish on the lake-bottom at South Manitou Island Lake Micigan](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/Snapshot%20South%20Manitou%20Tape%201%20%286%29.jpg?itok=9ilYr0lg)
Fish on the lake-bottom at South Manitou Island Lake Micigan
Fish on the lake-bottom at South Manitou Island Lake Micigan
Black River at Elyria, OH - high water
Black River at Elyria, OH - high water
![Excitation-emission spectra from analysis of raw wastewater and stream samples](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/3C-5_USGS_fluorescence_signals.jpg?itok=p6WucRvw)
Example excitation-emission spectra from analysis of raw wastewater and stream samples using a laboratory-based instrument.
Example excitation-emission spectra from analysis of raw wastewater and stream samples using a laboratory-based instrument.
![A USGS scientist collecting a discrete water-quality sample](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/3C-6_USGS_opticalsensor_sampling.jpg?itok=VXPOGBrX)
A USGS scientist collecting a discrete water-quality sample.
A USGS scientist collecting a discrete water-quality sample.
Dreissenid Mussels on Rocks in the Detroit River
Dreissenid Mussels on Rocks in the Detroit River
Dreissenid Mussels Detroit River
Dreissenid Mussels Detroit River