Images

This photo shows USGS gaging station 01055000 on the Swift River near Roxbury, Maine. 

The USGS monitors the Narraguagus River at Cherryfield, Maine at a location called Cable Pool. This spot was once renowned for Atlantic salmon, where anglers would line the banks, waiting their turn to cast a line into the water.

Location of earthquakes as a function of depth and size in the northeastern Caribbean.

Comparison of observed near-bed velocities and modeled near-bed velocities using several bottom-roughness formulations. Velocity vectors are overlaid on map of backscatter from the sea floor showing regions with coarse sand (light color) and fine sand (dark colors). White lines are bathymetry contours.

Water molecules (1 red oxygen and 2 white hydrogens) form a pentagonal dodecahedron around a methane molecule (1 gray carbon and 4 green hydrogens). This represents 2 of the 8 parts of the typical Structure I gas hydrate molecule.

Map of the Northeastern Caribbean: topography is in shades of green and bathymetry in shades of blue. Fault traces are shown as lines with the following descriptions: barbed=thrust fault; solid=strike-slip fault with arrows showing relative direction of motion; black and white=normal fault. Faults outlined in red have a potential to generate a large earthquake.

Noxious Algal Bloom in an estuary along the Massachusetts coast. Photo from the USGS circular 1360 "Water Quality in Pricipal Aquifers of the United States, 1991-2010."

Simulation results for geomorphic change in Suisun Bay, CA (Ganju and Schoellhamer, 2010)

The Instrumented Pressure Testing Chamber (IPTC). A device for measuring the physical properties of naturally-occurring, hydrate-bearing sediment at nearly in situ pressure conditions

Shaded relief image of Northern Cape Cod Bay, MA

Map of the island of Hispaniola that include the countries of Haiti and the Dominican Republic. Fault traces are shown as lines with the following descriptions: barbed=thrust fault; solid=strike-slip fault with arrows showing relative direction of motion; black and white=normal fault.

Methane seeping on the Virginia margin just shallower than the limit for gas hydrate stability. 

Groundwater measurement at Richmond well R-126 Long Island, NY

Scientists took a trip to Cypress Bridge Preserve during the "dry" season to collect sediment cores for further analysis.

Tremper Kill flooding 2010

The R/V Rafael performs nearshore geophysical surveys, and includes high resolution sub-bottom profiling, sidescan sonar, and multibeam echosounding in its arsenal of survey capabilities.

Licking River at Highway 536 near Alexandria, Kentucky water-quality equipment install.

Headwater stream

USGS hydrologist Tia Scott collecting a water quality sample from an eastern New York stream

Sandra Brosnahan (USGS) collecting water samples (Long Island, NY).

USGS scientists from the New York and Connecticut Water Science Centers fluid logging in Bangladesh