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Sunset on the Milwaukee River at Estabrook Park
Sunset on the Milwaukee River at Estabrook Park
Sunset on the Milwaukee River at Estabrook Park
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
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
White River at Hazelton, IN - - downstream view of channel from bridge
White River at Hazelton, IN - - downstream view of channel from bridge

White River at Hazelton, IN - downstream view of channel from bridge

Red River at Oslo, MN (Streamgage 05083500)
Red River at Oslo, MN (Streamgage 05083500)
Red River at Oslo, MN (Streamgage 05083500)
Red River at Oslo, MN (Streamgage 05083500)

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.

View of bedload sample
Bedload sample collected from the Durand bridge
Bedload sample collected from the Durand bridge
Bedload sample collected from the Durand bridge

Bedload sample collected from the Durand bridge.

View of Durand Bridge and sampling crew from boat
View of Durand Bridge and sampling crew from boat
View of Durand Bridge and sampling crew from boat
View of Durand Bridge and sampling crew from boat

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.

Brewer's Blackbird Nest with Three Eggs
Brewer's Blackbird Nest with Three Eggs
Brewer's Blackbird Nest with Three Eggs
Brewer's Blackbird Nest with Three Eggs

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.

Indiana River
Scientist at Indiana River
Scientist at Indiana River
Scientist at Indiana River

Scientist at Indiana River collecting samples

Scientist at Indiana River collecting samples

Tanja Williamson and Shawn Meyer - UAS
Tanja Williamson and Shawn Meyer - UAS
Tanja Williamson and Shawn Meyer - UAS
Tanja Williamson and Shawn Meyer - UAS

Tanja Williamson and Shawn Meyer - UAS

Black River at Elyria, OH - high and fast moving water
Black River at Elyria, OH - high and fast moving water
Black River at Elyria, OH - high and fast moving water
Black River at Elyria, OH - high and fast moving water

Black River at Elyria, OH - high and fast moving water

Crayfish, Detroit River
Crayfish, Detroit River
Crayfish, Detroit River
Crayfish, Detroit River

Crayfish, Detroit River

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
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
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

Fish on the lake-bottom at South Manitou Island Lake Micigan

HEC
HEC
HEC
HEC

HEC

Black River at Elyria, OH - high water
Black River at Elyria, OH - high water
Black River at Elyria, OH - high water
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
Excitation-emission spectra from raw wastewater and stream samples
Excitation-emission spectra from raw wastewater and stream samples
Excitation-emission spectra from raw wastewater and stream samples

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
A USGS scientist collecting a discrete water-quality sample
A USGS scientist collecting a discrete water-quality sample
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 on Rocks in the Detroit River
Dreissenid Mussels on Rocks in the Detroit River

Dreissenid Mussels on Rocks in the Detroit River

Dreissenid Mussels Detroit River
Dreissenid Mussels Detroit River
Dreissenid Mussels Detroit River
Dreissenid Mussels Detroit River

Dreissenid Mussels Detroit River

Fish Detroit River
Fish Detroit River
Fish Detroit River
Fish Detroit River

Fish Detroit River