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Explore our planet and learn more about our work through photographs and imagery from scientists and support staff.

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Infographic showing parts of an extensometer, including fulcrum arm, counterweight, instruments, instrument table, & borehole
Borehole Extensometer
Borehole Extensometer
Borehole Extensometer

Borehole Extensometer

Borehole extensometers are highly sensitive instruments which measure aquifer compaction. This infographic explains the various parts of a borehole extensometer, and is modeled after the USGS extensometer at Nansemond, Virginia.

Borehole Extensometer

Borehole extensometers are highly sensitive instruments which measure aquifer compaction. This infographic explains the various parts of a borehole extensometer, and is modeled after the USGS extensometer at Nansemond, Virginia.

An infographic showing how the weight of ice sheets deforms the underlying crust and can lead to isostatic adjustment.
Glacial Isostatic Adjustment
Glacial Isostatic Adjustment
Glacial Isostatic Adjustment

Glacial isostacy is the upward or downward land motion caused by the weight of ice sheets deforming the Earth's crust. The weight of the ice sheet deforms the underlying crust downward and displaces the underlying lithosphere, creating an indentation.

Glacial isostacy is the upward or downward land motion caused by the weight of ice sheets deforming the Earth's crust. The weight of the ice sheet deforms the underlying crust downward and displaces the underlying lithosphere, creating an indentation.

Collecting water quality samples from the New River Gorge
Collecting water quality samples from the New River Gorge
Collecting water quality samples from the New River Gorge
Collecting water quality samples from the New River Gorge

Collecting water quality samples from the New River Gorge in support of USGS-NPS partnership.

Fall 2022 Photo Contest Winner: Matt Kearns, USGS at Work category

Collecting water quality samples from the New River Gorge in support of USGS-NPS partnership.

Fall 2022 Photo Contest Winner: Matt Kearns, USGS at Work category

Photograph of the floodplain along Long Branch creek.
Floodplain Monitoring Site in the Long Branch Watershed, Fairfax, Virginia
Floodplain Monitoring Site in the Long Branch Watershed, Fairfax, Virginia
Floodplain Monitoring Site in the Long Branch Watershed, Fairfax, Virginia

A floodplain monitoring site along the Long Branch stream. This site is monitored as a part of the Fairfax County Water Resources Monitoring Network.

A floodplain monitoring site along the Long Branch stream. This site is monitored as a part of the Fairfax County Water Resources Monitoring Network.

Photograph of a floodplain along the Long Branch stream with several downed trees.
Floodplain Monitoring site in the Long Branch Watershed, Fairfax, VA
Floodplain Monitoring site in the Long Branch Watershed, Fairfax, VA
Floodplain Monitoring site in the Long Branch Watershed, Fairfax, VA

A floodplain monitoring site along the Long Branch stream. This site is monitored as a part of the Fairfax County Water Resources Monitoring Network.

A floodplain monitoring site along the Long Branch stream. This site is monitored as a part of the Fairfax County Water Resources Monitoring Network.

The eroded streambank along Long Branch stream
Bank Erosion at Long Branch
Bank Erosion at Long Branch
Bank Erosion at Long Branch

Streambank erosion is a common problem in urban watersheds. This heavily eroded streambank is located within the Long Branch watershed in Fairfax County, Virginia. This site is monitored as a part of the Fairfax County Water Resources Monitoring Network.

Streambank erosion is a common problem in urban watersheds. This heavily eroded streambank is located within the Long Branch watershed in Fairfax County, Virginia. This site is monitored as a part of the Fairfax County Water Resources Monitoring Network.

Close-up of an eroded stream bank. The slope of the bank is completely vertical with exposed tree roots.
Streambank Erosion at Long Branch
Streambank Erosion at Long Branch
Streambank Erosion at Long Branch

Streambank erosion is a common problem in urban watersheds. This heavily eroded streambank is located within the Long Branch watershed in Fairfax County, Virginia. This site is monitored as a part of the Fairfax County Water Resources Monitoring Network.

Streambank erosion is a common problem in urban watersheds. This heavily eroded streambank is located within the Long Branch watershed in Fairfax County, Virginia. This site is monitored as a part of the Fairfax County Water Resources Monitoring Network.

Photograph of a heavily eroded stream bank with exposed tree roots.
Streambank Erosion at the Long Branch Monitoring Site
Streambank Erosion at the Long Branch Monitoring Site
Streambank Erosion at the Long Branch Monitoring Site

Streambank erosion is a common problem in urban watersheds. This heavily eroded streambank is located within the Long Branch watershed in Fairfax County, Virginia. This site is monitored as a part of the Fairfax County Water Resources Monitoring Network.

Streambank erosion is a common problem in urban watersheds. This heavily eroded streambank is located within the Long Branch watershed in Fairfax County, Virginia. This site is monitored as a part of the Fairfax County Water Resources Monitoring Network.

Coolers of water-quality samples being prepped for shipping to a laboratory for analysis.
Prepping Water-Quality Samples for Shipping
Prepping Water-Quality Samples for Shipping
Prepping Water-Quality Samples for Shipping

Water-quality samples collected as part of a sampling campaign across the Potomac River watershed. Water-quality analyses are time-sensitive. At the end of each sampling day, samples are shipped overnight to the respective water-quality labs.

Water-quality samples collected as part of a sampling campaign across the Potomac River watershed. Water-quality analyses are time-sensitive. At the end of each sampling day, samples are shipped overnight to the respective water-quality labs.

A bridge crossing Antietam Creek below Hagerstown, Maryland.
Antietam Creek below Hagerstown, Maryland
Antietam Creek below Hagerstown, Maryland
Antietam Creek below Hagerstown, Maryland

Antietam Creek below Hagerstown, Maryland (U.S. Geological Survey site identifier 01619270).

Antietam Creek below Hagerstown, Maryland (U.S. Geological Survey site identifier 01619270).

An animated infographic showing how groundwater depletion in a confined aquifer can lead to aquifer compaction and subsidence
Aquifer compaction and land subsidence
Aquifer compaction and land subsidence
Aquifer compaction and land subsidence

This animated infographic shows how aquifer compaction can lead to land subsidence. When water is pumped from a confined aquifer faster than it can recharge, the water pressure in the aquifer begins to decrease. As water pressure decreases, both the confining layers and the aquifers themselves can start to compact under the weight of the overlying sediments.

This animated infographic shows how aquifer compaction can lead to land subsidence. When water is pumped from a confined aquifer faster than it can recharge, the water pressure in the aquifer begins to decrease. As water pressure decreases, both the confining layers and the aquifers themselves can start to compact under the weight of the overlying sediments.

Map of the Virginia coastal plain with the locations of USGS extensometers and the severity of groundwater drawdown
Virginia Extensometer Network
Virginia Extensometer Network
Virginia Extensometer Network

This static map shows the locations of the three existing extensometers (red) in the USGS' Virginia Extensometer Network with the location of a fourth future extensometer (green). The basemap is of the Virginia Coastal Plain and shows the severity of groundwater depletion, with darker blue indicating greater groundwater depletion. 

This static map shows the locations of the three existing extensometers (red) in the USGS' Virginia Extensometer Network with the location of a fourth future extensometer (green). The basemap is of the Virginia Coastal Plain and shows the severity of groundwater depletion, with darker blue indicating greater groundwater depletion. 

Capturing an elevated stage (storm-impacted) water quality sample
Capturing an elevated stage (storm-impacted) water quality sample
Capturing an elevated stage (storm-impacted) water quality sample
Capturing an elevated stage (storm-impacted) water quality sample

Doug Moyer capturing an elevated stage (storm-impacted) water quality sample at the South Fork Shenandoah River near Lynnwood, VA

Doug Moyer capturing an elevated stage (storm-impacted) water quality sample at the South Fork Shenandoah River near Lynnwood, VA

Close up photo of the nansemond extensometer, showing the counter-weight, fulcrum arm, and pressure gauge.
The USGS Nansemond Extensometer
The USGS Nansemond Extensometer
The USGS Nansemond Extensometer

The USGS Nansemond pipe extensometer (59D 39) with a total depth of 1,960 feet.

The USGS Nansemond pipe extensometer (59D 39) with a total depth of 1,960 feet.

A USGS scientists stands in a stream, measuring stream discharge.
Measuring discharge - The Glade, Reston, VA
Measuring discharge - The Glade, Reston, VA
Measuring discharge - The Glade, Reston, VA

A USGS scientist measures stream discharge at The Glade, an urban stream in Reston, Virginia.

A USGS scientist measures stream discharge at The Glade, an urban stream in Reston, Virginia.

Eleven people stand around a geodetic surveying tripod.
Geodetic Surveying Tripod
Geodetic Surveying Tripod
Geodetic Surveying Tripod

This photograph shows a high-accuracy geodetic surveying tripod used to measure vertical land motion.

This photograph shows a high-accuracy geodetic surveying tripod used to measure vertical land motion.

A USGS scientist wades into a stream with a net to sample for benthic macroinvertibrates.
Benthic Macroinvertebrate Sampling – Snakeden Branch, Reston, VA
Benthic Macroinvertebrate Sampling – Snakeden Branch, Reston, VA
Benthic Macroinvertebrate Sampling – Snakeden Branch, Reston, VA

A USGS scientist samples for benthic macroinvertebrates at Snakeden Branch, Reston, VA

A USGS Scientist with a net samples for macroinvertibrates in a stream.
Benthic Macroinvertebrate Sampling – The Glade, Reston, VA
Benthic Macroinvertebrate Sampling – The Glade, Reston, VA
Benthic Macroinvertebrate Sampling – The Glade, Reston, VA

USGS scientists conduct benthic macroinvertebrate sampling at The Glade in Reston, Virginia

A USGS scientist holds out a larval dragonfly caught during ecological sampling.
Larval Dragonfly
Larval Dragonfly
Larval Dragonfly

A USGS researcher shows off a dragonfly larva found during benthic macroinvertibrate sampling in Reston, Virginia.

A USGS researcher shows off a dragonfly larva found during benthic macroinvertibrate sampling in Reston, Virginia.

A panoramic photograph of Snakeden Branch, a stream in Reston, Virginia.
Snakeden Branch
Snakeden Branch
Snakeden Branch

Snakeden Branch is an urban stream in Reston, Virginia that has undergone stream restoration, and is currently being monitored to assess hydrologic and ecosystem health.

Snakeden Branch is an urban stream in Reston, Virginia that has undergone stream restoration, and is currently being monitored to assess hydrologic and ecosystem health.