Images

Solar-powered streamage on Lackawaxen River, PA supports Lake Wallenpaupack hydropower facility.

A seascape of tropical vegetation, sea water, mountains, mists, and storms. Photograph taken in the evening.

This photograph, taken from a seaside cliff, features a coconut palm against a backdrop of the sea far below.

Four endangered Nene geese, photographed atop the sea cliffs on Kauai's north shore.

This photograph, taken at low tide along a stretch of sandy and rocky coastline, features a tide pool habitat.

This photograph, taken at low tide along a stretch of sandy and rocky coastline, features a tide pool habitat.

This photograph, taken from a hiking trail, depicts some of the high tropical mountains and cliffs seen in the Hawaiian islands.

USGS hydrologists deploy fiber-optic distributed temperature sensing equipment in Ashumet Pond, Mashpee, Massachusetts. Fiber-optic distributed temperature sensing is an emerging technology that has promise for characterizing estuary-aquifer interaction. The technology evaluation was conducted by the USGS Office of Groundwater Branch of Geophysics in 2007.

Development along the mouth of the Elk River, a tributory of the Chesapeake Bay.

U.S. Geological Survey (USGS) scientists collecting bed-sediment samples from Suwanee Creek, Gwinnett County, Georgia, on May 23, 2007. 

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.

Mammoth

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 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.

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 hydrologist collects location data using GPS during a near-surface geophysics survey. The survey was conducted as part of an applied research effort by the USGS Office of Groundwater Branch of Geophysics in 2007.

A USGS hydrologist prepares equipment to conduct a gravity survey to evaluate small variations in the earth's gravity field. The USGS Office of Groundwater Branch of Geophysics develops and tests new tools and field methods to support USGS analysis of groundwater flow systems.

Great Salt Lake and the Wasatch Range from Antelope Island, Davis County, UT. Photograph taken April 26, 2007 by Alan M. Cressler.

The USGS collaborated with cooperator U.S. Fish & Wildlife Service to conduct continuous seismic-reflection profiling in the Havasu National Wildlife Refuge. The survey was conducted as part of an applied research and technology transfer effort by the USGS Office of Groundwater Branch of Geophysics in 2007.

Sunrise on the North Platte River at Broadwater, Nebraska. Looking upstream from Hwy 92 bridge.