The sound of an Eastern American toad (Bufo americanus americanus) call.
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Eastern American Toad (Bufo americanus americanus)
The sound of an Eastern American toad (Bufo americanus americanus) call.
Grasslands and agricultural fields, with housing development on the hills beyond.
Conversions of grassland/shrubland and agriculture to developed land were two common land-cover changes in Southern and Central California Chaparral and Oak Woodlands Ecoregion.
Conversions of grassland/shrubland and agriculture to developed land were two common land-cover changes in Southern and Central California Chaparral and Oak Woodlands Ecoregion.
Hoop fishing net deployed on the Little Colorado River
Hoop fishing net deployed on the Little Colorado River just downstream of a travetine fall
Hoop fishing net deployed on the Little Colorado River just downstream of a travetine fall
Irrigation ditch alongside an agricultural field in California's Central Valley
Irrigation systems in Central California Valley Ecoregion: Single-field irrigation ditch.
Irrigation systems in Central California Valley Ecoregion: Single-field irrigation ditch.
The Abandoned Silver Ledge Mine in the Upper Animas River Watershed
The abandoned Silver Ledge mine in the Upper Animas River watershed, Colorado. The Animas River watershed was one of two pilot watersheds studied as part of the USGS Abandoned Mine Lands Initiative.
The abandoned Silver Ledge mine in the Upper Animas River watershed, Colorado. The Animas River watershed was one of two pilot watersheds studied as part of the USGS Abandoned Mine Lands Initiative.
Upper Midwest Environmental Sciences Center
Upper Midwest Environmental Sciences Center
Upper Midwest Environmental Sciences Center
USGS Scientist Kevin Kenow looks out over lake at dawn.
USGS Scientist Kevin Kenow looks out over lake at dawn.
USGS Scientist Kevin Kenow looks out over lake at dawn.
May 18, 1980 Mount St. Helens Eruption: Stories from USGS Scientists
USGS scientists C. Dan Miller, Don Mullineaux, Mike Doukas, Norm Banks, Don Swanson, and Richard Waitt talk about their experiences at Mount St.
USGS scientists C. Dan Miller, Don Mullineaux, Mike Doukas, Norm Banks, Don Swanson, and Richard Waitt talk about their experiences at Mount St.
Sea Otter Capture and Tagging at Sunrise
USGS marine biologists set sail on a crisp September morning to capture and tag wild sea otters to monitor the health of this threatened species.
USGS marine biologists set sail on a crisp September morning to capture and tag wild sea otters to monitor the health of this threatened species.
Seining fish for NAWQA biological studies
Seining fish for NAWQA biological studies
Seining fish for NAWQA biological studies
Precipitation Gage near Custer, SD
Precipitation gage 434534103290500, Mt. Coolidge near Custer, SD
Precipitation gage 434534103290500, Mt. Coolidge near Custer, SD
Bolivian Deforestation
These images show the progression of deforestation in Bolivia from 1975 to 2000. This area lies east of Santa Cruz de la Sierra, Bolivia, in an area of tropical dry forest.
These images show the progression of deforestation in Bolivia from 1975 to 2000. This area lies east of Santa Cruz de la Sierra, Bolivia, in an area of tropical dry forest.
Groundwater sampling array
Groundwater sampling array at the Toxics Substances research site, Cape Cod, Massachusetts
Groundwater sampling array at the Toxics Substances research site, Cape Cod, Massachusetts
View of Mt. St. Helens from space
View of Mt. St. Helens from Space.
View of Mt. St. Helens from Space.
Domestic (private) well
More than 40 million people in the U.S. rely on domestic wells, like the one shown here, for their drinking water. Concentrations of groundwater at the wellhead typically are low, but lead can leach into the water from corrosion of household plumbing that contains lead.
More than 40 million people in the U.S. rely on domestic wells, like the one shown here, for their drinking water. Concentrations of groundwater at the wellhead typically are low, but lead can leach into the water from corrosion of household plumbing that contains lead.
Yellowtop
Yellowtop in bloom along the roadside, just south of the US 27/I-75 (Alligator
Alley) intersection.
Yellowtop in bloom along the roadside, just south of the US 27/I-75 (Alligator
Alley) intersection.
Yellowtop
Yellowtop in bloom along the roadside, just south of the US 27/I-75 (Alligator
Alley) intersection.
Yellowtop in bloom along the roadside, just south of the US 27/I-75 (Alligator
Alley) intersection.
Cypress Trees Along Trail
Cypress trees with buttressed bases along trail in Big Cypress National Preserve.
Cypress trees with buttressed bases along trail in Big Cypress National Preserve.
Epiphytes
Epiphytes in tree top at Big Cypress National Preserve.
Epiphytes in tree top at Big Cypress National Preserve.
Marine Vegetation and Rocks
Marine vegetation and rocks seen through the surface of Biscayne Bay waters.
Marine vegetation and rocks seen through the surface of Biscayne Bay waters.