Images

U.S. Geological Survey (USGS) scientist preparing samples for analysis of protein levels to normalize results from oxidative stress bioassays.

Scenic landscape from Hells Canyon Reservoir, Idaho

Scientists optimized existing methods to collect and identify microorganisms including Bacillus anthracis, a pathogenic microorganism, in 4,800 soil samples across the United States, and developed a

Photomicroscopy and Flow Cytometry Laboratory — Lafayette, Louisiana. Microscopic video imaging is used for computerized analysis of sperm motility parameters

Michigan Bacteriological Research Laboratory — Lansing, Michigan. A microbiologist preparing a water sample

Landsat satellites captured this image of Lake Erie during a harmful algal bloom event.

Dr. Bethany K. Kunz sets up a mobile-mounted dust meter, which measures concentrations of particulate matter across a range of particle sizes. She and her team use the meter to determine the effectiveness of dust control treatments on roads and estimate human exposure to dust in the inhalable size range.

Four USGS scientists sampling pore water from a canoe in un-named lake approximately 340 meters downgradient of the Bemidji, Minnesota crude oil spill site.

USGS NMWSC Hydrologists Johanna Blake and Jeb Brown attended the 2nd Annual Conference on Environmental Conditions of the Animas and San Juan Watersheds with Emphasis on Gold King Mine and other Mine Waste Issues in Farmington, NM from June 20-21.

Inside a debris cage, which is used to prevent pipe blockages, at one of 21 stormwater outfalls that was sampled prior to discharge to streams or stormwater ponds.

A stormwater pond that receives runoff from a residential landscape. U.S. Geological Survey scientists analyzed samples of stormwater runoff collected during 2016 and 2017 at 21 sites for 438 organic chemicals and 62 inorganic elements.

Willow Spring in Hack Canyon in Arizona north of the Grand Canyon. A sign next to the spring says Water Not Suitable for Drinking. The spring has elevated levels of uranium and selenium. The elevated uranium level is most likely not associated with breccia-pipe uranium mining in the area.

A photograph of U.S. Geological Survey (USGS) custom automated pathogen sampler (top) and schematic illustrating the remote-unattended-automated pathogen sampler (bottom). Sample collection proceeds over the course of a runoff-event or low-flow period for up to a maximum of 5 days before a site visit by personnel is needed to collect the samples.

New Orleans, La., July 29, 2008 -- Buras has become famous as the location where, on August 29, 2005, at 6:10 AM CDT, the eye of Hurricane Katrina, made its strongest landfall. The town's freshing painted water tower stands as a symbol of recovery for the state and the community. Jacinta Quesada/FEMA

Cumulative impacts of oil and gas production on watersheds in North Dakota between January 2008 and June 2015. Watershed volumes were calculated by combining reported values of oil, brine, and unidentified liquid waste accidentally released during drilling operations.

Iron Reducing Bacteria
FeRB isolated using a roll bottle technique from the former Uranium Mine near Ronneburg, Germany, Photo credit: Denise Akob, USGS

A team of scientists studied changes in nitrapyrin — a nitrification inhibitor applied with fertilizers as a bactericide to kill natural soil bacteria for the purpose of increasing crop yields — occurrence associated with land use changes from March to June 2016.

Water sampling on the pontoon of a seaplane in Lake Clark National Park, Alaska.

Burning coal to provide energy contributes mercury to the atmosphere

Raised black external tumors on adult brown bullhead (Ameiurus nebulosus) collected from Lake Memphremagog (Vermont and Canadian Border) were identified as malignant melanoma in a 2014–17 study.

Turbid glacial runoff in roaring river, surrounded by mountains in Lake Clark National Park, Alaska.