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Images described and linked on this webpage come from a wide variety of USGS science activities and presentations performed by USGS Science Center staff members in the Region 7: Upper Colorado Basin. A search tool is provided to narrow the number of image files shown.
Mike Jayred runs the drill while Greg Pederson stabilizies the outer barrel. Craig Lee and Danny Stahle wait to assist with extraction of the first meter of ice.
Mike Jayred runs the drill while Greg Pederson stabilizies the outer barrel. Craig Lee and Danny Stahle wait to assist with extraction of the first meter of ice.
Fort Collins Science Center
Fort Collins Science Center
An ancient ice patch located in the northeastern corner of the Greater Yellowstone Ecosystem
An ancient ice patch located in the northeastern corner of the Greater Yellowstone Ecosystem
Craig Lee and Mike Jayred scout a potential drilling location for extracting an ice core.
Craig Lee and Mike Jayred scout a potential drilling location for extracting an ice core.
An ancient ice patch located in the northeastern corner of the Greater Yellowstone Ecosystem.
An ancient ice patch located in the northeastern corner of the Greater Yellowstone Ecosystem.
USGS scientists conducting a study on the Great Salt Lake to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
USGS scientists conducting a study on the Great Salt Lake to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
A white-tailed ptarmigan sits on the side of Mt. Evans in northern Colorado.
A white-tailed ptarmigan sits on the side of Mt. Evans in northern Colorado.
USGS scientists conducting a study on the Great Salt Lake to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
USGS scientists conducting a study on the Great Salt Lake to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
A white-tailed ptarmigan on Mt. Evans, a fourteener in Northern Colorado.
A white-tailed ptarmigan on Mt. Evans, a fourteener in Northern Colorado.
USGS scientists prepare water-quality instruments before going out on the Great Salt Lake. USGS scientists are conducting a study to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
USGS scientists prepare water-quality instruments before going out on the Great Salt Lake. USGS scientists are conducting a study to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
USGS scientist Mike Freeman measures nutrient levels in Goggin Drain, Utah. USGS scientists are conducting an experimental study on two Utah water bodies to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
USGS scientist Mike Freeman measures nutrient levels in Goggin Drain, Utah. USGS scientists are conducting an experimental study on two Utah water bodies to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
USGS scientists Christopher L. Shope, Bryan Downing, Katy O'Donnell and Mike Freeman measure nutrient levels in Goggin Drain, Utah. USGS scientists are conducting an experimental study on two Utah water bodies to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
USGS scientists Christopher L. Shope, Bryan Downing, Katy O'Donnell and Mike Freeman measure nutrient levels in Goggin Drain, Utah. USGS scientists are conducting an experimental study on two Utah water bodies to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
USGS scientists Bryan Downing, Mike Freeman and Katy O'Donnell measure nutrient levels in Goggin Drain, Utah. USGS scientists are conducting an experimental study on two Utah water bodies to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
USGS scientists Bryan Downing, Mike Freeman and Katy O'Donnell measure nutrient levels in Goggin Drain, Utah. USGS scientists are conducting an experimental study on two Utah water bodies to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
USGS scientists Christopher L. Shope, Bryan Downing, Katy O'Donnell and Mike Freeman measure nutrient levels in Goggin Drain, Utah. USGS scientists are conducting an experimental study on two Utah water bodies to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
USGS scientists Christopher L. Shope, Bryan Downing, Katy O'Donnell and Mike Freeman measure nutrient levels in Goggin Drain, Utah. USGS scientists are conducting an experimental study on two Utah water bodies to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
USGS scientists use multiple high-frequency water quality instruments contained in a cage to measure nutrients and algal changes in surface water. Scientists are conducting an experimental study on two Utah water bodies to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
USGS scientists use multiple high-frequency water quality instruments contained in a cage to measure nutrients and algal changes in surface water. Scientists are conducting an experimental study on two Utah water bodies to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.
Erosion along the Rio Puerco during the flood of 2006 following herbicide application to control saltcedar in 2003.
Erosion along the Rio Puerco during the flood of 2006 following herbicide application to control saltcedar in 2003.
Organics analytical section, USGS National Water Quality Laboratory, Lakewood Colorado, 2016. Photograph by Mark Nilles, U.S. Geological Survey
Organics analytical section, USGS National Water Quality Laboratory, Lakewood Colorado, 2016. Photograph by Mark Nilles, U.S. Geological Survey
Collecting a sample for detection of N. fowleri in a Teton County hot spring
Collecting a sample for detection of N. fowleri in a Teton County hot spring
Sample processing equipment for detection of N. fowleri
Sample processing equipment for detection of N. fowleri
Water quality and sampling equipment deployed at spring site near Roaring Judy, Colorado. Groundwater discharge that flows into the Upper Colorado River Basin varies in response to drought, which is likely due to aquifer systems that contain relatively young groundwater, according to a new U.S
Water quality and sampling equipment deployed at spring site near Roaring Judy, Colorado. Groundwater discharge that flows into the Upper Colorado River Basin varies in response to drought, which is likely due to aquifer systems that contain relatively young groundwater, according to a new U.S