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Image: Solar-Powered Streamgage
Solar-Powered Streamgage
Solar-Powered Streamgage
Solar-Powered Streamgage

Solar-powered streamgage in Secretary's homeland in Animas River above Tacoma, CO.

Solar-powered streamgage in Secretary's homeland in Animas River above Tacoma, CO.

Image: Reclamation SHP
Reclamation SHP
Reclamation SHP
Reclamation SHP

Reclamation SHP (shallow water saline habitat ponds) Salton Sea, California.

Reclamation SHP (shallow water saline habitat ponds) Salton Sea, California.

Image: Diatoms (50 Species)
Diatoms (50 Species)
Diatoms (50 Species)
Diatoms (50 Species)

Photomicrograph depicting the siliceous frustulesof fifty species of diatoms arranged within a circular shape. Diatoms form the base of many marine and aquatic food chains and upon death, their glassy frustules form sediments known as diatomaceous earth.

Photomicrograph depicting the siliceous frustulesof fifty species of diatoms arranged within a circular shape. Diatoms form the base of many marine and aquatic food chains and upon death, their glassy frustules form sediments known as diatomaceous earth.

Image: Potomac River and Forest
Potomac River and Forest
Potomac River and Forest
Potomac River and Forest

View of the Potomac River from a bank.  Across the river is a forest of trees shedding leaves.

View of the Potomac River from a bank.  Across the river is a forest of trees shedding leaves.

Geological Survey of Bangladesh collecting drill cores.
Bangladesh collecting drill cores
Bangladesh collecting drill cores
Bangladesh collecting drill cores

Geological Survey of Bangladesh collecting drill cores from 1340' to describe the deep aquifer. The USGS was asked by U.S.

Geological Survey of Bangladesh collecting drill cores from 1340' to describe the deep aquifer. The USGS was asked by U.S.

Image: Foraminiferans (10 Species)
Foraminiferans (10 Species)
Foraminiferans (10 Species)
Foraminiferans (10 Species)

A photomicrograph depicting the calcium carbonate tests of ten species of marine foraminiferans. Upon death, their tests can form calcareous marine sediments known as foraminiferan ooze.

A photomicrograph depicting the calcium carbonate tests of ten species of marine foraminiferans. Upon death, their tests can form calcareous marine sediments known as foraminiferan ooze.

Image: Foraminiferans (10 Species)
Foraminiferans (10 Species)
Foraminiferans (10 Species)
Foraminiferans (10 Species)

A photomicrograph depicting the calcium carbonate tests of ten species of marine foraminiferans. The image has been inverted to bring out details. Upon death, their tests can form calcareous marine sediments known as foraminiferan ooze.

A photomicrograph depicting the calcium carbonate tests of ten species of marine foraminiferans. The image has been inverted to bring out details. Upon death, their tests can form calcareous marine sediments known as foraminiferan ooze.

Image: Shenandoah River Behind Trees
Shenandoah River Behind Trees
Shenandoah River Behind Trees
Shenandoah River Behind Trees

Shenandoah River behind trees with mountains in the background.

Image: Diatoms (50 Species)
Diatoms (50 Species)
Diatoms (50 Species)
Diatoms (50 Species)

A photomicrograph depicting the siliceous frustules of fifty species of diatoms arranged within a circular shape. The image has been inverted to white on black to bring out details. Diatoms form the base of many marine and aquatic foodchains and upon death, their glassy frustules form sediments known as diatomaceous earth.

A photomicrograph depicting the siliceous frustules of fifty species of diatoms arranged within a circular shape. The image has been inverted to white on black to bring out details. Diatoms form the base of many marine and aquatic foodchains and upon death, their glassy frustules form sediments known as diatomaceous earth.

Image: River in Fall
River in Fall
River in Fall
River in Fall

View from the bank of a river. The variegated forest in the background indicates the fall season.

View from the bank of a river. The variegated forest in the background indicates the fall season.

Image: Foraminiferans (10 Species)
Foraminiferans (10 Species)
Foraminiferans (10 Species)
Foraminiferans (10 Species)

A photomicrograph depicting the calcium carbonate tests of ten species of marine foraminiferans. Upon death, their tests can form calcareous marine sediments known as foraminiferan ooze.

A photomicrograph depicting the calcium carbonate tests of ten species of marine foraminiferans. Upon death, their tests can form calcareous marine sediments known as foraminiferan ooze.

Image: Collapsed Five-Story Building at Romar Beach
Collapsed Five-Story Building at Romar Beach
Collapsed Five-Story Building at Romar Beach
Collapsed Five-Story Building at Romar Beach

The lower two floors of the five-story building in the center of these photos have collapsed and the third floor has fallen to ground level.

Image: Mud Volcano
Mud Volcano
Mud Volcano
Mud Volcano

A surface expression of geothermal activity.

A surface expression of geothermal activity.

Image: Davis Rd. Carbon Dioxide Vent
Davis Rd. Carbon Dioxide Vent
Davis Rd. Carbon Dioxide Vent
Davis Rd. Carbon Dioxide Vent

Davis Rd. carbon dioxide vent, Salton Sea, California.

Image: USGS Employee At Work
USGS Employee At Work
USGS Employee At Work
USGS Employee At Work

Laura Coffey,a chemist at the National Water Quality Laboratory, loads on-line solid-phase extraction cartridges into the high-performance liquid chromatography/mass spectrometer (HPLC/MS) in preparation for testing and calibration

Laura Coffey,a chemist at the National Water Quality Laboratory, loads on-line solid-phase extraction cartridges into the high-performance liquid chromatography/mass spectrometer (HPLC/MS) in preparation for testing and calibration

Image: Processing Emerging-Contaminants Bed-Sediment Sample
Processing Emerging-Contaminants Bed-Sediment Sample
Processing Emerging-Contaminants Bed-Sediment Sample
Processing Emerging-Contaminants Bed-Sediment Sample

John Clune and Connie Loper, PA Water Science Center, processing an emerging-contaminants bed-sediment sample at Rock Creek near Gettysburg, PA.

Image: Processing Emerging-Contaminants Bed-Sediment Sample
Processing Emerging-Contaminants Bed-Sediment Sample
Processing Emerging-Contaminants Bed-Sediment Sample
Image: Collecting Emerging-Contaminants Bed-Sediment Sample
Collecting Emerging-Contaminants Bed-Sediment Sample
Collecting Emerging-Contaminants Bed-Sediment Sample
Collecting Emerging-Contaminants Bed-Sediment Sample

John Clune, PA Water Science Center, collecting an emerging-contaminants bed-sediment sample at the Susquehanna River at Danville,PA.

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