Images

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.

Smallmouth bass skin with melanistic lesions.

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

Two aerial images that demonstrate satellite-derived cyanobacteria concentrations in surface waters from an area in Florida.

Field sampling in the Hells Canyon Reservoir Complex, with Dr. M. Marvin-DiPasquale at the bow of the sediment collection boat. Photographer: D. Krabbenhoft.

Transmission electron micrographs of complete hepatitis B viral particles

U.S. Geological Survey (USGS) scientists retrieve and process an ecological processing monitoring station. Each station includes a caged native mussel (shown attached to the buoy rope) and a sampler for measuring invertebrate consumers (not shown).

Maps showing the use of the new water-quality tracking tool to track water-quality conditions at 106 river and stream sites throughout the Nation.

Scientist deploying a silicone passive sampler near a corn field in Cerro Gordo County, Iowa. The science team used the passive samplers to quantify pesticide exposure in wetland, grassland, and agricultural habitats.

A diagram of the life stages of Pacific lamprey. Adults spawn in freshwater streams, then the larvae live in sediments. Juveniles then migrate to the ocean. After a life in the ocean they return to streams to spawn and die.

U.S. Geological Survey (USGS) scientist collecting groundwater samples for analysis of poly- and perfluoroalkyl substances (PFASs) from a multiport monitoring well downgradient from a former fire-training area on western Cape Cod, Massachusetts.

The quality of the water we drink can inpact our health.

Two USGS scientists collecting surface water samples in the Rabenberg Waterfowl Protection Area, Montana, as part of an effort to study if historic oil and gas production in the Williston Basin has impacted amphibians in the Prairie Pothole Region.

Three osprey (Pandion haliaetus) nestlings in Coastal Inland Bays, Rehoboth, Delaware in 2015.

Two osprey (Pandion haliaetus) nestlings in Coastal Inland Bays, Rehoboth, Delaware in 2015.

Joan Hagar and Amy Comstock assess the long-term ecological value and characteristics of snags created for wildlife

Scientists refined the existing national-scale "De facto Reuse Incidence in our Nation's Consumable Supply" (DRINCS) model for the Shenandoah River watershed.

One of the mobile fish exposure laboratories that were deployed at sites in the Shenandoah River watershed, Virginia. Fish were housed in the mobile laboratories and exposed to stream water or wastewater during the study to understand exposure and effects on fish.

Scientists deployed mobile fish exposure laboratories, such as these two, at sites in the Shenandoah River watershed, Virginia, to understand exposure and effects on fish. Inside the laboratories (see inset photo) fish were placed in aquariums, and exposed to stream water or wastewater during the study.

Scientists deployed mobile fish exposure laboratories, such as these two, at sites in the Shenandoah River watershed, Virginia, to understand exposure and effects on fish.

Scientists deployed mobile fish exposure laboratories at sites in the Shenandoah River watershed, Virginia, to understand exposure and effects on fish. This photo shows the aquariums in a laboratory where fish were exposed to stream water or wastewater.