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Overlooks an estuarine waterway lined by marsh grasses, cabbage palms, and woodland.

This photo shows a road salt storage stockpile that is awaiting use for pavement deicing, Port of Milwaukee, WI. The use of salt to deice pavement can be harmful to aquatic life in urban streams. The USGS is involved in studies that focus on the influence of winter runoff on aquatic ecosystems.

Picture showing equipment used to collect water for analyses of viruses.

Crevasses Sink spans approximately 25 ft across the river bed.

View westward along Atigun River in Atigun Gorge.  Rocks in foreground are Lower Cretaceous Fortress Mountain Formation.  Rocks in gorge, along river, are Lower Cretaceous Okpikruak Formation.  Mountains on horizon are mostly carbonates of Carboniferous Lisburne Group.  Location in Brooks Range foothills, about 100 miles southeast of Umiat.

Boreal toad (Bufo boreas) mating ball, Bridger-Teton National Forest, Wyoming.

Map of the northwestern U.S., showing the approximate locations of Yellowstone hotspot volcanic fields (orange) and Columbia River Basalts (gray). Boundary of Yellowstone National Park is shown in yellow. Modified from Barry et al. (GSA Special Paper 497, p.

Large-scale poster describing USGS work.

The USGS mapped Crater Lake, Oregon using sonar, in cooperation with the National Park Service, the University of New Hampshire, and C&C Technologies.

USGS scientist performing a routine calibration of an instrument used to collect air samples at a gasoline spill site in Galloway Township, New Jersey. The air samples were analyzed for volatile organic compounds (VOCs).

In stunning, up-close and personal detail, LIMA brings Antarctica to life, both for the scientific community and the general public at large.

Clear cool water over a limestone rock and gravel riverbed is characteristic of many Texas Hill County Creeks and Rivers. 

Drought - Schoharie Reservoir 2001

Salt scar near Lake Skiatook, Oklahoma, caused by a produced-water spill

Streamgage 06412810, Cleghorn Springs at Rapid City, SD.

Corbicula sampling in the Bonneville Pool, Columbia River.

Lake Martin, a popular spot for bird-watching, fishing and boating, is part of The Nature Conservancy’s Cypress Island Preserve. The site, located in St. Martin Parish, Louisiana, is a beautiful example of a bald cypress swamp. The first case of Snake Fungal Disease in a free-ranging wild snake in Louisiana was documented by a USGS scientist from there in 2015.

Lake Martin, a popular spot for bird-watching, fishing and boating, is part of The Nature Conservancy’s Cypress Island Preserve. The site, located in St. Martin Parish, Louisiana, is a beautiful example of a bald cypress swamp. The first case of Snake Fungal Disease in a free-ranging wild snake in Louisiana was documented by a USGS scientist from there in 2015.

Scientist from the USGS collects a gas sample into an evacuated/vacuum flas from a steam vent near the Shoshone Geyser Basin.

Firefighters surrounded by clouds of smoke and dust of the World Trade Center after the terrorist attacks of September 11, 2001. Photographer's Mate 2nd Class Jim Watson, U.S. Navy.

USGS Hydrologist Heidi Hoppe Preserving a water sample at Great Egg Harbor River at Weymouth, New Jersey

USGS scientist collecting samples at Crater Lake, Oregon.