Images

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."

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.

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.

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.

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.

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

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

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.

The first USGS streamgage, at Embudo, New Mexico, just turned 125 years old.

USGS scientist Jamie Macy tracks the time-of-arrival of the pulse flow on March 24. 

RML Reston Microbiology Laboratory Gel Electrophoresis

USGS scientist Jeff Kennedy prepares to measure the change in gravity caused by changing aquifer storage for Minute 319 studies. 

RML Reston Microbiology Laboratory Molecular Lab

RML Reston Microbiology Main laboratory

Ice Jams in Redwater River near Vida, MT.

USGS scientist Jon Thomas collecting time-domain electromagnetic sounding in the Texas southern high plains to measure hydrogeologic properties below the land surface.

Ice Jams in Powder River at Arvada, WY, downstream of the bridge.

Robert Bradley, a hydrologic technician with the Massachusetts USGS Office, headed to Maine to experience a winter ice measurement trip with Laura Flight, a hydrologic technician from the Maine USGS Office.

USGS hydrologic technician Jim Caldwell uses an aluminum tube and scale to measure snow depth, snow water content and snow density as part of the Maine Cooperative Snow Survey. This survey is conducted throughout Maine in the spring to aid in the evaluation of flood potential by the Maine River Flow Advisory Commission.