Soper Branch stream with a USGS streamgage on the bridge. Soper Branch is a small stream near Hyattstown, MD, that is part of the Chesapeake Bay watershed.
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Soper Branch Creek
Soper Branch stream with a USGS streamgage on the bridge. Soper Branch is a small stream near Hyattstown, MD, that is part of the Chesapeake Bay watershed.
Cladophora Algae
The USGS studies what lives in Cladophora glomerata algae and why it matters for fish, wildlife, and, ultimately, the people that rely on the Great Lakes fisheries.
The USGS studies what lives in Cladophora glomerata algae and why it matters for fish, wildlife, and, ultimately, the people that rely on the Great Lakes fisheries.
Low-level Helicopter Towing a Large Wire-Loop Contraption Hanging from a Cable
Low-level Helicopter Towing a Large Wire-Loop Contraption Hanging from a CableA low-level helicopter towing a large wire-loop contraption hanging from a cable is flying straight across an open field in Nebraska on a clear day.
Low-level Helicopter Towing a Large Wire-Loop Contraption Hanging from a Cable
Low-level Helicopter Towing a Large Wire-Loop Contraption Hanging from a CableA low-level helicopter towing a large wire-loop contraption hanging from a cable is flying straight across an open field in Nebraska on a clear day.
Truffle
A truffle of Elaphomyces spp. with Elaphocordyceps ophioglossoides, a parasitic ascomycetous fungus, at Kumbrabow State Forest in West Virginia.
A truffle of Elaphomyces spp. with Elaphocordyceps ophioglossoides, a parasitic ascomycetous fungus, at Kumbrabow State Forest in West Virginia.
Aerial Over Weka Dur Gold Deposit, Badakhshan
Aerial view over Weka Dur, Afghanistan’s largest known gold deposit, Badakhshan Province.
Aerial view over Weka Dur, Afghanistan’s largest known gold deposit, Badakhshan Province.
Map Contour Engraving Tools
Tools of the trade for a US Geological Survey engraver- the burin and the hand lens, resting on a contours engraving.
Tools of the trade for a US Geological Survey engraver- the burin and the hand lens, resting on a contours engraving.
A Steady Hand
The steady hands of a USGS engraver touching up left-reading lettering.
The steady hands of a USGS engraver touching up left-reading lettering.
Panorama of Silverton, Colorado
Panoramic photo of Silverton, Colorado, with Sultan Mountain in the distance. Silverton is the town most directly affected by the Gold King mine blowout.
Panoramic photo of Silverton, Colorado, with Sultan Mountain in the distance. Silverton is the town most directly affected by the Gold King mine blowout.
Measuring Streamflow in 1920
H.D. McGlashan measures streamflow in the Merced River, circa 1920. Multiple velocity and water-depth measurements along a stream cross section are used to calculate the total volume of water passing a certain location over a specific period of time (cubic feet per second).
Location: Merced River, Yosemite National Park, California
H.D. McGlashan measures streamflow in the Merced River, circa 1920. Multiple velocity and water-depth measurements along a stream cross section are used to calculate the total volume of water passing a certain location over a specific period of time (cubic feet per second).
Location: Merced River, Yosemite National Park, California
Forest Overlain by Clouds
Clouds Overlying a Forest.
Clouds Overlying a Forest.
Cascades Frog
A Cascades frog peeks out of the water in Olympic National Park.
A Cascades frog peeks out of the water in Olympic National Park.
Deforestation
Forest cover being removed for cattle pasturage and development. Smoke from bulldozed trees is visible in background with cattle in the foreground.
Forest cover being removed for cattle pasturage and development. Smoke from bulldozed trees is visible in background with cattle in the foreground.
Pacific Lamprey (Lampetra tridentata)
Larval Pacific lamprey collected from the upper Umatilla River in northeastern Oregon.
Larval Pacific lamprey collected from the upper Umatilla River in northeastern Oregon.
Low-level Helicopter Towing a Large Wire-Loop Contraption Hanging From a Cable
Low-level Helicopter Towing a Large Wire-Loop Contraption Hanging From a CableHelicopter towing a large, wire-loop contraption hanging from a cable is turning in air on a relatively clear day in Nebraska.
Low-level Helicopter Towing a Large Wire-Loop Contraption Hanging From a Cable
Low-level Helicopter Towing a Large Wire-Loop Contraption Hanging From a CableHelicopter towing a large, wire-loop contraption hanging from a cable is turning in air on a relatively clear day in Nebraska.
USGS Great Lakes Science Center
Aerial view of the USGS Great lakes Science Center Hammond Bay Biological Station at Hammond Bay, Michigan.
Air-quality Monitoring Instruments
Annotated photo of air-quality particulate monitoring instruments, showing temperature and humidity sensors, air-sample inlet tube, wind sensor, power supply, and communication connections.
Annotated photo of air-quality particulate monitoring instruments, showing temperature and humidity sensors, air-sample inlet tube, wind sensor, power supply, and communication connections.
Juvenile Silver Carp
This close-up image is of juvenile silver carp in research tanks at the USGS Upper Midwest Environmental Sciences Center.
This close-up image is of juvenile silver carp in research tanks at the USGS Upper Midwest Environmental Sciences Center.
Copper Map Plate Detail
Detail of a “culture” separate, which was represented in the color black on a USGS topographic map.
Detail of a “culture” separate, which was represented in the color black on a USGS topographic map.
Pictographs on Rock
Pictographs at Saguaro National Park. Photographed 2006 or earlier.
Pictographs at Saguaro National Park. Photographed 2006 or earlier.
Pictographs on Rock
Pictographs at Saguaro National Park. Photographed 2006 or earlier
Pictographs at Saguaro National Park. Photographed 2006 or earlier
Cascades Frog
A Cascades frog perched on moss.
A Cascades frog perched on moss.