American coots at the Merritt Island National Wildlife Refuge. Individuals shown have black feathers, red eyes, and a white bill.
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American Coots (Fulica americana)
American coots at the Merritt Island National Wildlife Refuge. Individuals shown have black feathers, red eyes, and a white bill.
Mud Volcano
A surface expression of geothermal activity.
A surface expression of geothermal activity.
Mud Volcano
A surface expression of geothermal activity.
A surface expression of geothermal activity.
Mud Volcano
A surface expression of geothermal activity.
A surface expression of geothermal activity.
Wolf in Yellowstone National Park
Wolves were reintroduced to Yellowstone National Park in 1995 and 1996.
Wolves were reintroduced to Yellowstone National Park in 1995 and 1996.
Wolf in Yellowstone National Park
Wolves were reintroduced to Yellowstone National Park in 1995 and 1996.
Wolves were reintroduced to Yellowstone National Park in 1995 and 1996.
Wolf in Yellowstone National Park
Wolves were reintroduced to Yellowstone National Park in 1995 and 1996.
Wolves were reintroduced to Yellowstone National Park in 1995 and 1996.
Gas Hydrate Drill Rig at the Mt. Elbert Test Site in Alaska
Gas Hydrate Drill Rig at the Mt. Elbert Test Site in AlaskaA drill rig at the Mount Elbert test site in Alaska's North Slope, just west of Prudhoe Bay. USGS joined BP Exploration (Alaska) and the U.S. Department of Energy to drill a test well to study natural gas production from gas hydrate deposits. Read more about the Mt.
Gas Hydrate Drill Rig at the Mt. Elbert Test Site in Alaska
Gas Hydrate Drill Rig at the Mt. Elbert Test Site in AlaskaA drill rig at the Mount Elbert test site in Alaska's North Slope, just west of Prudhoe Bay. USGS joined BP Exploration (Alaska) and the U.S. Department of Energy to drill a test well to study natural gas production from gas hydrate deposits. Read more about the Mt.
Underwood Waterway Site 3
North Dakota Discovery Farms Underwood waterway site 3, located west of Underwood, ND. In 2008, the Underwood farm became the first farm in the North Dakota Discovery Farms project.
North Dakota Discovery Farms Underwood waterway site 3, located west of Underwood, ND. In 2008, the Underwood farm became the first farm in the North Dakota Discovery Farms project.
Rock Sandpipers Roosting Along Shore of Cook Inlet
Rock Sandpipers Roosting Along Shore of Cook InletA small flock of Rock Sandpipers roosts near the splash zone along the shore of upper Cook Inlet. Numerous individuals exhibit ice encasing their lower legs and adhering to their feathers.
Rock Sandpipers Roosting Along Shore of Cook Inlet
Rock Sandpipers Roosting Along Shore of Cook InletA small flock of Rock Sandpipers roosts near the splash zone along the shore of upper Cook Inlet. Numerous individuals exhibit ice encasing their lower legs and adhering to their feathers.
Rock Sandpiper with Ice-encrusted Leg
Image of a Rock Sandpiper with its lower left leg encased in ice.
Image of a Rock Sandpiper with its lower left leg encased in ice.
Post-Harvest Rice Straw
After harvest, fields are reflooded to decay the remaining straw. This decaying material can fuel the bacteria that create methylmercury, even during the cold months.
After harvest, fields are reflooded to decay the remaining straw. This decaying material can fuel the bacteria that create methylmercury, even during the cold months.
Kauai Sand Art
Sand patterns in a stretch of beach near Waimea, Kauai.
Sand patterns in a stretch of beach near Waimea, Kauai.
Hawaiian Sunset
Sunset over the ocean near Poipu, Kauai, Hawaii.
Sunset over the ocean near Poipu, Kauai, Hawaii.
Maui from the Air
The southern coastline of Maui, Hawaii, taken from the air, clearly showing old lava flows.
The southern coastline of Maui, Hawaii, taken from the air, clearly showing old lava flows.
Big Island Coast
Windswept coastline near the southernmost tip of the Big Island of Hawaii.
Windswept coastline near the southernmost tip of the Big Island of Hawaii.
Preparing Water-Quality Sampling Device for Use
A USGS scientist about the collect a water sample with a DH-95 sampler (the white torpedo looking device). After sampling, another scientist takes the bottle of water and pours it into the churn. Having another scientist do this prevents contamination of the sample.
A USGS scientist about the collect a water sample with a DH-95 sampler (the white torpedo looking device). After sampling, another scientist takes the bottle of water and pours it into the churn. Having another scientist do this prevents contamination of the sample.
Adult Alligator
Large adult
Sampling Acid Mine Drainage in Elk_County, PA
Sampling acid mine drainage residuals in Elk County, Pennsylvania. The USGS has pioneered a new use for these residuals that are currently a disposal challenge, using them to filter phosphorus from agricultural and municipal wastewaters.
Sampling acid mine drainage residuals in Elk County, Pennsylvania. The USGS has pioneered a new use for these residuals that are currently a disposal challenge, using them to filter phosphorus from agricultural and municipal wastewaters.
Rio Nigua at Turnpike
After heavy rains the river floods over the bridge and then for several months it will flow through the conduits under the roadway before it dries up again. The location is at 17º59"15"N, 66º17"40" and the elevation is 10 m.
After heavy rains the river floods over the bridge and then for several months it will flow through the conduits under the roadway before it dries up again. The location is at 17º59"15"N, 66º17"40" and the elevation is 10 m.
Measuring Streamflow Through a Weir
Pew Creek below Johnson Road, Lawrenceville, Ga. The metal structure is a "V" weir. A sediment dam was built on either side of it to force the water through the weir. Scientists can calculate gallons per minute flow in the stream by timing how long the flow took to fill a bucket.
Pew Creek below Johnson Road, Lawrenceville, Ga. The metal structure is a "V" weir. A sediment dam was built on either side of it to force the water through the weir. Scientists can calculate gallons per minute flow in the stream by timing how long the flow took to fill a bucket.