Images

National Wildlife Health Center — Madison, Wisconsin. Digestive gland from a freshwater snail (Lymnaea stagnalis)

Hydrogeophysics Laboratory — Storrs, Connecticut. A saltwater tracer was injected into the shallow aquifer at a uranium-contaminated site in Colorado and monitored for 28 days using a combination of geophysical and well-sampling arrays; the sampling array is marked by the white standpipes adjacent to the central injection tank.

Microbial Biogeochemistry Laboratory — Menlo Park, California. USGS scientist collecting samples of aquatic species from the Pike River, Wis., for later analysis of mercury contamination.

Passive Sampling Research—Columbia, Missouri. The polar organic chemical integrative sampler (POCIS - on the left) and semipermeable membrane devices (SPMDs - on the right) samplers are used for sampling hydrophilic organic chemicals from water. The SPMDs sampler can also be deployed for air sampling.

USGS scientist collecting samples of aquatic species from the Pike River, Wis., for later analysis of mercury contamination

Organic Chemistry Research Laboratory -- Sacramento, California. Small sample bottles with pollen inside

Early life stage exposure laboratory study

Bioactive Chemicals Research Laboratory — Boulder, Colorado. Fathead minnows (Pimephales promelas) swimming in an experimental aquarium. The aquarium is part of an experiment to assess endocrine disruption in fish.

Hydrogeophysics Branch -- Storrs, Connecticut

Scientist preparing samples in a laboratory for quantitative polymerase chain reaction (PCR) analysis

Diagram showing antrhopods, fish, and other aquatic life in the area of an oil and gas spill.

Filtration system used for processing samples using a technique called polymerase chain reaction (PCR) or quantitative PCR (qPCR). 

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 8 captured this image of Lake Erie during a harmful algal bloom event on September 26, 2017. 

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.