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Images from Region 6.

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A USGS hydrotech stands below the sampling point of a high-volume public-supply well
Sampling point for a large-volume public-supply well
Sampling point for a large-volume public-supply well
Sampling point for a large-volume public-supply well

A large-volume public supply well in San Antonio, Texas.  This well is being sampled for water-quality constituents as part of the NAWQA Enhanced Trend Network project.

A large-volume public supply well in San Antonio, Texas.  This well is being sampled for water-quality constituents as part of the NAWQA Enhanced Trend Network project.

The sampling point on a large-volume public-supply well is designated
Sampling point for a large-volume public-supply well
Sampling point for a large-volume public-supply well
Sampling point for a large-volume public-supply well

A large-volume public supply well in San Antonio, Texas.  This well is being sampled for water-quality constituents as part of the NAWQA Enhanced Trend Network project.

A large-volume public supply well in San Antonio, Texas.  This well is being sampled for water-quality constituents as part of the NAWQA Enhanced Trend Network project.

Image shows USGS scientists standing beside a drill rig in protective gear.
Night Drilling for the Eagle Ford
Night Drilling for the Eagle Ford
Night Drilling for the Eagle Ford

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 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.

Image shows USGS scientists standing beside a drill rig in protective gear.
Black and White Night Drilling for the Eagle Ford
Black and White Night Drilling for the Eagle Ford
Black and White Night Drilling for the Eagle Ford

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 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.

Image shows USGS scientists standing beside a drill rig in protective gear.
Moonrise over Night Drilling for the Eagle Ford
Moonrise over Night Drilling for the Eagle Ford
Moonrise over Night Drilling for the Eagle Ford

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 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.

Image shows USGS scientists standing beside a drill rig in protective gear.
Night Drilling for the Eagle Ford
Night Drilling for the Eagle Ford
Night Drilling for the Eagle Ford

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 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.

A vehicle is shown at night, with its trunk open and floodlights on
Drilling at Night for the Eagle Ford
Drilling at Night for the Eagle Ford
Drilling at Night for the Eagle Ford

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 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.

Image shows USGS scientists standing beside a drill rig in protective gear.
Moonlight over Night Drilling for the Eagle Ford
Moonlight over Night Drilling for the Eagle Ford
Moonlight over Night Drilling for the Eagle Ford

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 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.

Image shows USGS scientists standing beside a drill rig in protective gear.
Core Drilling for the Eagle Ford
Core Drilling for the Eagle Ford
Core Drilling for the Eagle Ford

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 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.

Image shows USGS scientists standing beside a drill rig in protective gear.
Drilling a Core for the Eagle Ford
Drilling a Core for the Eagle Ford
Drilling a Core for the Eagle Ford

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 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.

Image: Hallettsville, Texas Streamgage
Hallettsville, Texas Streamgage
Hallettsville, Texas Streamgage
Hallettsville, Texas Streamgage

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

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

Image shows a drill core in a box with cardboard dividers
Eagle Ford Drill Core
Eagle Ford Drill Core
Eagle Ford Drill Core

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.

Image shows a drill core in a box with cardboard dividers
Eagle Ford Drill Core
Eagle Ford Drill Core
Eagle Ford Drill Core

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.

Image shows a cross-section of a drill core, held in two gloved hands
Eagle Ford Drill Core
Eagle Ford Drill Core
Eagle Ford Drill Core

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.

Location is about 11 miles downstream from Farm to Market Road 669 bridge over Double Mountain Fork Brazos River.
11 miles from FM 669 bridge Double Mt. Fork Brazos River
11 miles from FM 669 bridge Double Mt. Fork Brazos River
11 miles from FM 669 bridge Double Mt. Fork Brazos River

Location is about 11 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 11 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 3 miles downstream from U.S. Highway 84 bridge over Double Mountain Fork Brazos River near Justiceburg, Texas.
U.S. Highway 84 bridge over Double Mountain Fork Brazos River
U.S. Highway 84 bridge over Double Mountain Fork Brazos River
U.S. Highway 84 bridge over Double Mountain Fork Brazos River

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 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

5 miles downstream from Farm to Market Road 669 bridge over Double Mountain Fork Brazos River near Justiceburg, Texas.
5 miles from FM Road 669 bridge Double Mt. Fork Brazos River
5 miles from FM Road 669 bridge Double Mt. Fork Brazos River
5 miles from FM Road 669 bridge Double Mt. Fork Brazos River

Location is about 5 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 5 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

miles downstream from Farm to Market Road 669 bridge over Double Mountain Fork Brazos River, Justiceburg, Texas, Garza County.
FM 669 bridge over Double Mountain Fork Brazos River
FM 669 bridge over Double Mountain Fork Brazos River
FM 669 bridge over Double Mountain Fork Brazos River

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 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
FM 669 bridge over Double Mountain Fork Brazos River
FM 669 bridge over Double Mountain Fork Brazos River
FM 669 bridge over Double Mountain Fork Brazos River

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

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

Two men collecting groundwater samples at a public well in the middle of a grassy field in Texas
Scientists Sampling Groundwater from a Public Supply Well in Texas
Scientists Sampling Groundwater from a Public Supply Well in Texas
Scientists Sampling Groundwater from a Public Supply Well in Texas

USGS scientists collecting water quality samples at a public-supply well in Texas, overlying the Eagle Ford shale production area.

USGS scientists collecting water quality samples at a public-supply well in Texas, overlying the Eagle Ford shale production area.

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