View of Old Mans Creek near Iowa City, Iowa upstream from a bridge used for collecting water-quality samples (USGS Site ID: 05455100).
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View of Old Mans Creek near Iowa City, Iowa
View of Old Mans Creek near Iowa City, Iowa upstream from a bridge used for collecting water-quality samples (USGS Site ID: 05455100).
White-Nose Syndrome Lesions Under UV Light
Long-wave ultraviolet (UV) and white-light illumination of lesions associated with white-nose syndrome. Points of orange–yellow fluorescence (arrows) detected on a roosting Indiana myotis (Myotis sodalis) following surface illumination with a field-portable 9-watt 368-nm fluorescent UV light (photo by Tina Cheng with permission).
Long-wave ultraviolet (UV) and white-light illumination of lesions associated with white-nose syndrome. Points of orange–yellow fluorescence (arrows) detected on a roosting Indiana myotis (Myotis sodalis) following surface illumination with a field-portable 9-watt 368-nm fluorescent UV light (photo by Tina Cheng with permission).
U.S. Geological Survey laboratories to middle school students
Dr. Denise Akob and Dr. Karl Haase give a tour of U.S. Geological Survey laboratories to middle school students. The tour was part of the White House's My Brother's Keeper Day at the Lab.
Dr. Denise Akob and Dr. Karl Haase give a tour of U.S. Geological Survey laboratories to middle school students. The tour was part of the White House's My Brother's Keeper Day at the Lab.
A map showing the locations of decision units at the Canyon Mine, AZ
A map showing the locations of decision units surrounding the Canyon Mine, Arizona. The scientists used a incremental sampling methodology to collect samples from the predefined decision units. The points (squares and circles) indicate locations where surface soil subsamples were collected during June 2013.
A map showing the locations of decision units surrounding the Canyon Mine, Arizona. The scientists used a incremental sampling methodology to collect samples from the predefined decision units. The points (squares and circles) indicate locations where surface soil subsamples were collected during June 2013.
USGS Laboratory for Infectious Disease and the Environment
U.S. Geological Survey scientists analyzing samples for viral pathogens at the Laboratory for Infectious Disease and the Environment.
U.S. Geological Survey scientists analyzing samples for viral pathogens at the Laboratory for Infectious Disease and the Environment.
A comparison of streamflow and specific conductance in Muddy Creek, WY
A comparison of streamflow and specific conductance (a measure of salinity) in Muddy Creek, Wyoming, for individual years from 2005 to 2012. Salt content decreases as streamflow increases, a common pattern in semiarid watersheds.
A comparison of streamflow and specific conductance (a measure of salinity) in Muddy Creek, Wyoming, for individual years from 2005 to 2012. Salt content decreases as streamflow increases, a common pattern in semiarid watersheds.
Laboratory set up with water samples.
Experimental laboratory setup to study uranium in aquatic organisms. Bottles contain artificial freshwater amended with dissolved organic matter and a range of uranium concentrations.
Experimental laboratory setup to study uranium in aquatic organisms. Bottles contain artificial freshwater amended with dissolved organic matter and a range of uranium concentrations.
Laboratory set up with water sample
Experimental laboratory setup to study uranium in aquatic organisms. Bottles contain artificial freshwater amended with dissolved organic matter and a range of uranium concentrations.
Experimental laboratory setup to study uranium in aquatic organisms. Bottles contain artificial freshwater amended with dissolved organic matter and a range of uranium concentrations.
A Scientist Working in a Laboratory Measuring Pharmaceuticals in Water
A PhD fellow from the University of York measuring pharmaceutical concentrations in samples collected from the Rivers Foss and Ouse, United Kingdom, during her work at the U.S. Geological Survey (USGS) National Water Quality Laboratory.
A PhD fellow from the University of York measuring pharmaceutical concentrations in samples collected from the Rivers Foss and Ouse, United Kingdom, during her work at the U.S. Geological Survey (USGS) National Water Quality Laboratory.
New Croton Dam is part of New York City's water supply system
The New Croton Dam is part of New York City's water supply system, Croton-on-Hudson, Westchester County, New York.
The New Croton Dam is part of New York City's water supply system, Croton-on-Hudson, Westchester County, New York.
Idealized diagram of a public water supply's water distribution system
Idealized diagram of a public water supply's water distribution system.
Idealized diagram of a public water supply's water distribution system.
USGS scientist collecting sample from the stream prior to manure spill
USGS scientist collecting a water sample from the stream prior to the swine manure spill.
USGS scientist collecting a water sample from the stream prior to the swine manure spill.
U.S. Geological Survey (USGS) Scientists Processing Leachate Samples
U.S. Geological Survey (USGS) scientists processing leachate samples collected for a national-scale study on the occurrence of contaminants of emerging concern (CECs) in landfill leachate disposed offsite.
U.S. Geological Survey (USGS) scientists processing leachate samples collected for a national-scale study on the occurrence of contaminants of emerging concern (CECs) in landfill leachate disposed offsite.
Field exposure setup at a wastewater treatment plant
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.
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
Smallmouth bass skin with melanistic lesions.
Smallmouth bass skin with melanistic lesions.
Vial containing an egg sample that will undergo chemical extraction
Organic Chemistry Research Laboratory — Sacramento, California. Vial containing an egg sample
Organic Chemistry Research Laboratory — Sacramento, California. Vial containing an egg sample
Satellite Data Derived Cyanobacteria Concentrations
Two aerial images that demonstrate satellite-derived cyanobacteria concentrations in surface waters from an area in Florida.
Two aerial images that demonstrate satellite-derived cyanobacteria concentrations in surface waters from an area in Florida.
Hells Canyon Sediment Collection
Field sampling in the Hells Canyon Reservoir Complex, with Dr. M. Marvin-DiPasquale at the bow of the sediment collection boat. Photographer: D. Krabbenhoft.
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 virus
Transmission electron micrographs of complete hepatitis B viral particles
Transmission electron micrographs of complete hepatitis B viral particles
USGS Scientists Retrieve a Caged Mussel Sampler from a Boat
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).
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).
Water-quality tracking tool maps
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.
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.