Paul Schuster, USGS, holding an ice core of Aufice (meaning over ice). Each layer represents a groundwater overflow event. Groundwater flows are predicted to increase with warming temperatures likely affecting the formation of Aufice in the Yukon River basin.
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Paul Schuster, USGS, holding an ice core of Aufice (meaning over ice). Each layer represents a groundwater overflow event. Groundwater flows are predicted to increase with warming temperatures likely affecting the formation of Aufice in the Yukon River basin.
USGS Scientist Mark Roth listening to frog calls. Coolecting frog calls allows scientists to determine distribution of species.
USGS Scientist Mark Roth listening to frog calls. Coolecting frog calls allows scientists to determine distribution of species.
Example of wellhead plumbing typical of public wells sampled in a USGS study of 932 public wells nationwide. About 105 million peopleor more than one-third of the Nation's populationreceive their drinking water from one of the 140,000 public water systems across the United States that rely on groundwater pumped from public wells.
Example of wellhead plumbing typical of public wells sampled in a USGS study of 932 public wells nationwide. About 105 million peopleor more than one-third of the Nation's populationreceive their drinking water from one of the 140,000 public water systems across the United States that rely on groundwater pumped from public wells.
Manatee Spring looking toward main vent. One of many springs in Florida USGS began a data collection on in 2001.
Manatee Spring looking toward main vent. One of many springs in Florida USGS began a data collection on in 2001.
View of the Alalpaha River draining into a sink in the riverbed during a major drought.
View of the Alalpaha River draining into a sink in the riverbed during a major drought.
View of mountainous coastline in South Africa showing urban development.
View of mountainous coastline in South Africa showing urban development.
Scenic view of coastline in South Africa.
Scenic view of coastline in South Africa.
![Image: Rio Grande and Cliffs in Boquillas Canyon, Big Bend National Park](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/Rio_Grande_River_at_Boquillas_Canyon__TX_1.jpg?itok=1iy7C--g)
The Rio Grande as it flows in Big Bend National Park, mostly flow from the Rio Conchos in Mexico. The canyon is downstream of the USGS gage.
The Rio Grande as it flows in Big Bend National Park, mostly flow from the Rio Conchos in Mexico. The canyon is downstream of the USGS gage.
Dan Edwards and Gary Wall attach a hydroacoustic and turbidity equipment package to a tripod for deployment on the bottom of the Hudson River near Poughkeepsie, NY
Dan Edwards and Gary Wall attach a hydroacoustic and turbidity equipment package to a tripod for deployment on the bottom of the Hudson River near Poughkeepsie, NY
Clear cool water over a limestone rock and gravel riverbed is characteristic of many Texas Hill County Creeks and Rivers.
Clear cool water over a limestone rock and gravel riverbed is characteristic of many Texas Hill County Creeks and Rivers.
![USGS regional research drill rig near Truckee River, NV](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/rig8.jpg?itok=z7RTckGT)
USGS regional research drill rig constructing sites near the south bank of the Truckee River just downstream of USGS 10350000 Truckee River at Vista. The wells were constructed to investigate surface water groundwater interaction.
USGS regional research drill rig constructing sites near the south bank of the Truckee River just downstream of USGS 10350000 Truckee River at Vista. The wells were constructed to investigate surface water groundwater interaction.
Batavia Kill at Red Falls, Greene County, NY
Batavia Kill at Red Falls, Greene County, NY
USGS scientists taking water samples in the tidal marsh on Long Island.
USGS scientists taking water samples in the tidal marsh on Long Island.
More than 40 million people in the U.S. rely on domestic wells, like the one shown here, for their drinking water. Concentrations of groundwater at the wellhead typically are low, but lead can leach into the water from corrosion of household plumbing that contains lead.
More than 40 million people in the U.S. rely on domestic wells, like the one shown here, for their drinking water. Concentrations of groundwater at the wellhead typically are low, but lead can leach into the water from corrosion of household plumbing that contains lead.
Long Island core samples
Long Island core samples
Groundwater sampling for water quality on Long Island, New York
Groundwater sampling for water quality on Long Island, New York
An Everglades National Park coastal salt marsh crossed with drainage creeks.
An Everglades National Park coastal salt marsh crossed with drainage creeks.
![Streamflow-gaging station 08028500 Sabine River near Bon Wier, Texas, left bank adjacent to U.S. Highway 190 bridge.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/fig7b.jpg?itok=xYyhSHPc)
U.S. Geological Survey streamflow-gaging station 08028500 Sabine River near Bon Wier, Texas, photograph looking from left bank adjacent to U.S. Highway 190 bridge, May 30, 1999.
SIR 2009–5174
U.S. Geological Survey streamflow-gaging station 08028500 Sabine River near Bon Wier, Texas, photograph looking from left bank adjacent to U.S. Highway 190 bridge, May 30, 1999.
SIR 2009–5174
![Image: Coastal Dune with Seaoats (Uniola paniculata) and Spanish Bayonets (Yucca Sp.)](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/Management_WildlifeManagement_00011.jpg?itok=CfAy1Ta-)
Florida's Atlantic coastal dune with typical vegetation such as seaoats and Spanish bayonets. Trails to the beach cut through the dune. Photograph taken circa 1998.
Florida's Atlantic coastal dune with typical vegetation such as seaoats and Spanish bayonets. Trails to the beach cut through the dune. Photograph taken circa 1998.
Burned-out buildings in downtown Grand Forks, North Dakota.
Burned-out buildings in downtown Grand Forks, North Dakota.