Images

USGS scientists drilling a research core near Waco, Texas. This core was drilled by USGS during field work for an oil and gas assessment for the Eagle Ford of the Gulf Coast Basins. Cores like these provide information on the various rock layers, such as their make-up, their age, etc.

USGS scientist Brad Slaugh measures streamflow following a flash flood event in Hildale, Utah.

USGS scientist Brad Slaugh taking measurements following a flash flood event in Hildale, Utah.

A photo of the new USGS streamgage on the Lavaca River at Hallettsville, Texas.

A drill core from near Waco, Texas. This core was drilled by USGS during field work for an oil and gas assessment for the Eagle Ford of the Gulf Coast Basins. Cores like these provide information on the various rock layers, such as their make-up, their age, etc.

A drill core from near Waco, Texas. This core was drilled by USGS during field work for an oil and gas assessment for the Eagle Ford of the Gulf Coast Basins. Cores like these provide information on the various rock layers, such as their make-up, their age, etc.

A drill core from near Waco, Texas. This core was drilled by USGS during field work for an oil and gas assessment for the Eagle Ford of the Gulf Coast Basins. Cores like these provide information on the various rock layers, such as their make-up, their age, etc.

USGS\AVO seismologist works to replace an old seismometer at seismic station LSSA on Little Sitkin Volcano in the western Aleutian Arc.

AVO seismologists work to repair a seismic station on Little Sitkin Volcano in the western Aleutians Islands.

Harmful Algae Bloom on the Ohio River at Ironton, Ohio.

A scientist from the University of California, Berkeley climbs a giant sequoia to measure its drought stress.

The Colorado River at the Imperial National Wildlife Refuge near Cabin Lake, Arizona.

This organism forms a colony that is the size of a pin head and can be seen floating in the water. The filaments glow red from chlorophyll, the yellow-green mass in the center is the mucilage that binds the filaments into the colony and green spots are associated bacteria, illuminated with the DNA stain Sytox Green ®.

This organism forms a colony that is the size of a pin head and can be seen floating in the water. Using ultra violet light, the filaments glow red from chlorophyll, while other pigments give various hues of purple, which may be a hint about the health of the cells.

This organism forms a colony that is the size of a pin head and can be seen floating in the water. Using ultra violet light, the filaments glow red from chlorophyll, while other pigments give various hues of purple, which may be a hint about the health of the cells.

A hydrologic technician from the USGS Idaho Water Science Center measures streamflow in Fall Creek near Anderson Ranch Dam in southwestern Idaho. The USGS is collecting data at hundreds of sites on rivers and streams in six western states to document the 2015 drought.

New streamgage on the South Concho river above Twin Buttes. This new gage will provide resource managers with critical streamflow information.

Location is about 3 miles downstream from U.S. Highway 84 bridge over Double Mountain Fork Brazos River near Justiceburg, Texas, in Garza County.
USGS SIR 2016–5032

Location is about 9 miles downstream from Farm to Market Road 669 bridge over Double Mountain Fork Brazos River near Justiceburg, Texas, in Garza County.
USGS SIR 2016–5032

Location is about 8 miles downstream from Farm to Market Road 669 bridge over Double Mountain Fork Brazos River near Justiceburg, Texas, in Garza County.
USGS SIR 2016–5032