Images

Part of the project team for a scenario planning effort with Knife River Indian Villages National Historic Site.

A view of the field exposure setup where the scientists exposed both larval and adult fathead minnows to treated effluent from a wastewater treatment plant.

Impervious Surface Effects Rockland County NY

Preparing to measure water level at Groundwater Streamgage

Using a portable flume to measure streamflow on a small stream

For the first time since it was opened in 1984, water has stopped flowing through the Great Salt Lake causeway breach, an area that allows water to travel between the southern and northern parts of the lake.

A gage to measure lake water levels stands dry in the lake bed of the Great Salt Lake. For the first time since it was opened in 1984, water has stopped flowing through the Great Salt Lake causeway breach, an area that allows water to travel between the southern and northern parts of the lake.

New Fork River near Big Piney streamgage

Smallmouth bass skin with melanistic lesions.

USGS staffer sitting on sandy beach on Long Island collecting a water sample

Dead trees viewed from the Colony Mill Trail in Sequoia National Park, photographed in 2015 during severe drought in California.

High Resolution Orthoimagery archived at the USGS EROS Center and inset into the larger image show the New Jersey coastal town of Mantoloking five years before Sandy made landfall, as well as the slow recovery three years after the storm.

Measuring streamflow of the Green River near LaBarge

C1 and C3 are granitic crystal-melt mush (partially crystallized magma) columns that fed the most recent Mono Craters eruptions. The connection from C1 to South Coulée (SC) is older and colder than the connection from C3 to North Coulée (NC) and Panum Crater (PC), which carries hydrothermal fluid to the surface.

Anna Ormiston and Jesi Hessong, student contractors with the USGS Amphibian Research and Monitoring Initiative, or ARMI, display several discarded mylar balloon collected by field teams working in and around the Capital Region National Parks in the summer of 2015. They collected a total of 71 balloons.

USGS scientists Kevin Denton (left), Katherine “Kyeti” Morgan, and David Ponce set up a magnetic base station during fieldwork along the Hayward-Rodgers Creek fault zone in wheat fields north of San Pablo Bay.

USGS scientist David Ponce measuring gravity using a gravimeter along the Hayward-Rodgers Creek fault zone just north of San Pablo Bay, California.

Hydrologic technician wades stream to collect a water-quality sample on Muddy Creek near Tomsich Butte, eastern Utah.

A group of 5th graders from a New York City school in the Bronx learn about how contaminants spilled on the ground travel through a sandy aquifer and can impact nearby waterways from USGS hydrologist Shawn Fisher as part of the Urban Waters Initiative community outreach at Roberto Clemente State Park during the week-long Harlem River Festival.

USGS scientist collecting soil samples

Organic Chemistry Research Laboratory — Sacramento, California. Vial containing an egg sample