Images

Borehole logging

A modern 21^st century-style streamgage on the Brazos River in Richmond, Texas.

The confluence of the Suiattle River (muddy river) into the Sauk River. 

This view is looking upstream from the USGS gage 02034000 RIVANNA RIVER AT PALMYRA, VA . It is one of the 43 research sites in the Chespeake Synoptic Floodplain Network. 

Travis Gibson and John Carricaburu measuring Discharge at USGS gage 09234500 Green River near Greendale, UT.

Geophysical logging at a borehole well in western Maryland

Screen capture of a PowerPoint slide with the caption "This video will give an overview of how the Seawater Intrusion package works."

Screen capture of ModelMuse displaying an SWI model with the caption "You can see the position of the interface at the end of the final stress period."

Long Island body of water

Sunfish from the Southeast Stream Quality Assessment. An increase in sunfish in southeastern streams, intentionally stocked or unintentionally transplanted, has caused the composition of fish species among streams in the Southeast to become more similar. Such homogenization of species is an emergi

Sunset view looking northwest from Fishermans Cove, across Ashumet Pond, Cape Cod, Massachusetts. The small sticks and flags in the lake are a sampling grid. 

U.S. Geological Survey crest-stage gage 07307550 Wind River tributary at Farm to Market 656 near Northfield, Texas, looking downstream, May 24, 2014 (photograph by W.H. Asquith).
Cover photograph for U.S. Geological Survey Scientific Investigations Report 2018–5107

Screen capture of ModelMuse displaying an expanded "Model" menu and the cursor over "MODFLOW Packages and Programs". A caption reads "Then select 'MODFLOW Packages and Programs' and then select the Conduit Flow Process."

Oil-well pads dotting the landscape of typical badland topography. Thousands of new wells are drilled into the Bakken and Three Forks annually, making this one of the most productive plays in the Nation.

Little Haynes Creek is one of the sites investigated in the USGS Regional Stream Quality Assessment, during which water quality and ecological condition were sampled.

Pole Bridge Creek is one of the sites investigated in the USGS Regional Stream Quality Assessment, during which water quality and ecological condition were sampled.

USGS scientist Vidal Mendoza measures flow downstream of the Comal Springs, Texas.

A new website now provides important information about streamflow in the Comal and San Marcos Rivers and springflow at Comal and San Marcos Springs.

USGS hydrologists and technicians use a kicknet to collect a sample of aquatic invertebrates for an ecological survey on South Fork Broad River iin Georgia. Broad River was one of the sites investigated in the USGS Regional Stream Quality Assessment, during which water quality and ecological condition were sampled.

Using ADCP (Acoustic Doppler Current Profiler) to measure current offshore on Long Island, NY.

View looking west from Fishermans Cove, across Ashumet Pond, Cape Cod, Massachusetts. The small sticks in the lake are a small-scale sampling grid. 

Did you know that changes in the amount of water in aquifers cause small changes in Earth’s gravitational field? When the amount of groundwater in an aquifer changes, either by recharge or by discharge to surface water or wells, the gravitational acceleration at the land surface also changes.