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Images from Region 4.
Biologists from the USGS Columbia Environmental Research Center (CERC) use fish and frogs in cages suspended in flowing streams to study the effects of stream contaminants on fish and frog development. Here, three biologists wrestle with a cage in high water, as part of the Regional Stream Quality Assessments (RSQA).
Biologists from the USGS Columbia Environmental Research Center (CERC) use fish and frogs in cages suspended in flowing streams to study the effects of stream contaminants on fish and frog development. Here, three biologists wrestle with a cage in high water, as part of the Regional Stream Quality Assessments (RSQA).
Wet weather during the 2013 USGS Regional Stream Quality Assessment (RSQA) caused water to pond on cornfields. The RSQA studied the relations between water-quality, physical habitat, and stream ecology in the Corn Belt states of the Midwest.
Wet weather during the 2013 USGS Regional Stream Quality Assessment (RSQA) caused water to pond on cornfields. The RSQA studied the relations between water-quality, physical habitat, and stream ecology in the Corn Belt states of the Midwest.
CRSP biologists travelled along the Missouri and Mississippi rivers in search of usable boat ramps. Pictured is a ramp located near Cape Girardeau, MO.
CRSP biologists travelled along the Missouri and Mississippi rivers in search of usable boat ramps. Pictured is a ramp located near Cape Girardeau, MO.
CRSP biologists travelled along the Missouri and Mississippi rivers in search of usable boat ramps. Pictured is a ramp Grand Tower, IL.
CRSP biologists travelled along the Missouri and Mississippi rivers in search of usable boat ramps. Pictured is a ramp Grand Tower, IL.
Brown Marsh observed in southeastern Terrebonne Basin, La
Brown Marsh observed in southeastern Terrebonne Basin, La
Arkansas River at Dardanelle, Arkansas, during low-flow conditions on September 29, 2012. Photograph by Daniel M. Wagner, U.S. Geological Survey.
Arkansas River at Dardanelle, Arkansas, during low-flow conditions on September 29, 2012. Photograph by Daniel M. Wagner, U.S. Geological Survey.
An aerial view of coastal marshes along Bayou Dufrene, southwest of the town of Dulac in Louisiana's Terrebonne Basin.
An aerial view of coastal marshes along Bayou Dufrene, southwest of the town of Dulac in Louisiana's Terrebonne Basin.
Brown Marsh observed in southeastern Terrebonne Basin, La
Brown Marsh observed in southeastern Terrebonne Basin, La
Brown Marsh observed in southeastern Terrebonne Basin, La
Brown Marsh observed in southeastern Terrebonne Basin, La
Brown Marsh observed in southeastern Terrebonne Basin, La.
Brown Marsh observed in southeastern Terrebonne Basin, La.
Behavioral Toxicology Laboratory — Columbia, Missouri. Screen shot of a computer monitor from a video recording setup from a swimming behavior experimental swimming behavior assay system. U.S. Geological Survey (USGS) scientists can record swimming activity of multiple treatments simultaneously in the swimming behavior assay.
Behavioral Toxicology Laboratory — Columbia, Missouri. Screen shot of a computer monitor from a video recording setup from a swimming behavior experimental swimming behavior assay system. U.S. Geological Survey (USGS) scientists can record swimming activity of multiple treatments simultaneously in the swimming behavior assay.
Wetlands Reserve Program site in Sabine Parish, Louisiana. Landowner restored his often-flooded cattle pasture to its natural wetland state by creating shallow water areas, establishing food plots and pollinator plots, and installing wood duck nesting boxes.
Wetlands Reserve Program site in Sabine Parish, Louisiana. Landowner restored his often-flooded cattle pasture to its natural wetland state by creating shallow water areas, establishing food plots and pollinator plots, and installing wood duck nesting boxes.
Pruitt Buffalo National River
Pruitt Buffalo National River
Real-time Groundwater Streamgage equipment set up
Flood Diversion Measures Along the Lower Mississippi River
Flood Diversion Measures Along the Lower Mississippi River
USGS scientist Cindy Sibley prepares to take a water quality measurment on the Atchafalaya River Basin near Melville, La.
USGS scientist Cindy Sibley prepares to take a water quality measurment on the Atchafalaya River Basin near Melville, La.
USGS scientist Cindy Sibley prepares to take a water quality measurment on the Atchafalaya River Basin near Melville, La.
USGS scientist Cindy Sibley prepares to take a water quality measurment on the Atchafalaya River Basin near Melville, La.
USGS scientist Cindy Sibley looks at the rising waters on the Atchafalaya River Basin near Melville, La.
USGS scientist Cindy Sibley looks at the rising waters on the Atchafalaya River Basin near Melville, La.
USGS scientists Cindy Sibley and Mike Descant calibrate the water quality monitor on the Atchafalaya River Basin near Melville, La.
USGS scientists Cindy Sibley and Mike Descant calibrate the water quality monitor on the Atchafalaya River Basin near Melville, La.
USGS scientists Mike Descant and Cindy Sibley take water quality measurements on the Atchafalaya River Basin near Melville, La.
USGS scientists Mike Descant and Cindy Sibley take water quality measurements on the Atchafalaya River Basin near Melville, La.
USGS scientists Mike Descant and Cindy Sibley take water quality measurements on the Atchafalaya River Basin near Melville, La.
USGS scientists Mike Descant and Cindy Sibley take water quality measurements on the Atchafalaya River Basin near Melville, La.