Toxic Substances Hydrology
Multimedia
One-stop collection of videos, photography, and audio. All items in this gallery are considered public domain unless otherwise noted.
Sampling Trip on the Green River
U.S. Geological Survey scientists holding a Colorado pikeminnow during a sampling trip in the Upper Colorado River Basin.
Nippon mercury analyzer for sediments and fish
Nippon mercury analyzer for sediments and fish.
MC-ICP-MS used for mercury stable isotope analyses
MC-ICP-MS used for mercury stable isotope analyses.
Graduate student performing mercury uptake studies in plankton
Graduate student, Grace Armstrong, performing mercury uptake studies in plankton at Mercury Research Laboratory, Middleton, Wisconsin.
Melanistic and normal areas of fish skin
Microscopic appearance of normal and melanistic skin in fish from Chesapeake Bay watershed.
USGS Hydrologic Technician Collecting Water Samples
USGS Hydrologic Technician assisting with collection of downwelling porewater samples in a PFAS-impacted lake on Cape Cod.
Visitors at Winnewissa Falls viewing area, Pipestone National Monument
Visitors at Winnewissa Falls in Pipestone National Monument
Numerous aquatic macroinvertebrate taxa collected from a stream
Benthic macroinvertebrate taxa collected from Straight Run, Tioga County, Pennsyvania, USA.
Aerial image and satellite derived image of Florida Lakes
This image is a cropped rendition of two aerial images that demonstrate satellite-derived cyanobacteria concentrations in surface waters from an area in Florida. The top image is true-color photograph, and the bottom image is from the Medium Resolution
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A seasonal wetland engineered to have a deeper and shallow pool
A three year study was conducted in seasonal wetlands to determine if a deep and shallow water pool resulted in a reduction of methylmercury in caged fish and surface water.