Images

Bed sediment sampling, Suwanee Creek, Gwinnett Co, Georgia

Sunset Salton Sea, California.

Eastern bluebird in bird bath.

Eastern bluebird flapping its wings in a bird bath.

USGS hydrologists monitor data collection during a geophysical survey using the horizontal-to-vertical ambient-noise seismic method. This method can be used to estimate unconsolidated sediment thickness and map the bedrock surface as part of groundwater investigations.

Example of a pump and plumbing configuration used by public water systems. About 105 million people—or more than one-third of the Nation's population—receive their drinking water from one of the 140,000 public water systems across the United States that rely on groundwater pumped from public wells.

Colpophyllia natans in shallow water.

Two long-spined sea urchins surrounded by rocks in shallow water.

Long-spined sea urchins surrounded by rocks in shallow water.

Oreaster reticulatus in shallow water.

Condylactis gigantea fluourescing on rocks. The anemones are in a tank illuminated by ultraviolet (black) light. The anemones absorb the invisible ultraviolet light and reflect it back as visible bright green light.

Close-up of Colpophyllia natans in shallow water.

Banded iron formation. Core room of Vale do Rio Doce Company, Carajás iron mine. Searching for life on Mars using Mars analogs in Australia.

Drilling for mineral resources near Canyonlands National Park, Utah

Studying an iron mine as Mars analog.

As the Little Androscoggin River flows through western Maine it eventually reaches Snow Falls, a 25 ft cascading waterfall in the town of West Paris. 

USGS hydrologists prepare equipment for multi-channel analysis of surface waves (MASW) land seismic imaging survey. The geophones (in the yellow "land streamer") are pulled behind a vehicle. This relatively new system allows for inexpensive and rapid data acquisition.

USGS hydrologists conduct a multi-channel analysis of surface waves (MASW) land seismic imaging survey. The yellow land streamer contains the geophones and is towed behind a vehicle. This relatively new system allows for inexpensive and rapid data acquisition.

USGS hydrologists prepare equipment for a multi-channel analysis of surface waves (MASW) land seismic imaging survey. In this picture, the accelerated weight-drop energy source (blue box) is attached to the back of a vehicle. This relatively new system allows for inexpensive and rapid data acquisition.

An adult sumatran tiger stands with a sumatran tiger cub.

Installing a water-level monitoring gage, Coosawattee River, Georgia. Two USGS workers installing a "stilling well"s, which is a major component of most systems used to monitor stream stage (gage height). The pipe is placed vertically into the stream and the level of the water in the pipe is continuously monitored and transmitted to USGS water-science offices.