A clear, conical trap collects emerging aquatic insects on Navigation Pool 8 of the Upper Mississippi River for a USGS study examining the effects of Asian carp on insect-eating birds.
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Biological Sampling Device - Insects Traps 2010
A clear, conical trap collects emerging aquatic insects on Navigation Pool 8 of the Upper Mississippi River for a USGS study examining the effects of Asian carp on insect-eating birds.
North New River Station
An excessive amount of weeds flows down North New River.
An excessive amount of weeds flows down North New River.
Shadroe Canal Weir
A calm canal flows intensely over the weir into the churning pool below.
A calm canal flows intensely over the weir into the churning pool below.
Canal Dredging
Dredging the entrance canal to the Caloosahatcee River in Moore Haven, FL.
Dredging the entrance canal to the Caloosahatcee River in Moore Haven, FL.
Dangerous Cross Section
A reptilian audience watches as a discharge measurement is made.
A reptilian audience watches as a discharge measurement is made.
Red River
Red River of the North at Halstad, Minnesota, on April 1, 2011, just prior to ice breaking up.
Red River of the North at Halstad, Minnesota, on April 1, 2011, just prior to ice breaking up.
Flooded Gaging Station
Flooded gaging station on the Souris River near Westhope, North Dakota, April 20, 2011. See other pictures in this gallery with the tag 05124000 to see what the gage house normally looks like - it is on a raised platform on the bank of the river with an access road next to it.
Flooded gaging station on the Souris River near Westhope, North Dakota, April 20, 2011. See other pictures in this gallery with the tag 05124000 to see what the gage house normally looks like - it is on a raised platform on the bank of the river with an access road next to it.
Storm Clouds over Missouri River
Storm clouds over the Missouri River.
Storm clouds over the Missouri River.
Aerial View of Subsiding Marshes in the Mississippi River Delta
An aerial view of subsiding marshes in the Mississippi River Delta. An aerial view of subsiding marshes in the Mississippi River Delta. This region contains vast areas of marshes, swamps, and barrier islands—important habitat for wildlife, as nursery grounds for marine life, and as protective buffers against storms and hurricanes.
An aerial view of subsiding marshes in the Mississippi River Delta. An aerial view of subsiding marshes in the Mississippi River Delta. This region contains vast areas of marshes, swamps, and barrier islands—important habitat for wildlife, as nursery grounds for marine life, and as protective buffers against storms and hurricanes.
USGS Measures Flooding in Louisiana
USGS scientists Paul Frederick and Mike Descant make sure there is enough clearance for their boat to drive under a bridge on the Atchafalaya River near Melville, La.
USGS scientists Paul Frederick and Mike Descant make sure there is enough clearance for their boat to drive under a bridge on the Atchafalaya River near Melville, La.
Performing Double Duty
Performing double duties of tracking and collecting acoustic images, Chad Vishy operates one of his three computers and five screens necessary to simultaneously collect this variety of data.
Performing double duties of tracking and collecting acoustic images, Chad Vishy operates one of his three computers and five screens necessary to simultaneously collect this variety of data.
Electrofishing Low-Salinity Mangroves
Scientists electrofish low-salinity shorelines, Tarpon Bay, Everglades National Park.
Scientists electrofish low-salinity shorelines, Tarpon Bay, Everglades National Park.
Measuring a Cross-Sectional Creek Profile
Scientist measures the profile of a tidal creek at low tide. Note main Shark River off to the right side of photo.
Scientist measures the profile of a tidal creek at low tide. Note main Shark River off to the right side of photo.
Measuring Flow in a Flooded Forest
Employee uses a Flowtracker to measure cross-sectional profile of a rivulet draining a mangrove forest.
Employee uses a Flowtracker to measure cross-sectional profile of a rivulet draining a mangrove forest.
Navigating a Tidal Creek at Low Tide
Scientist raised the engine to navigate a tidal creek at low tide. Note freeze damage to mangroves in the background.
Scientist raised the engine to navigate a tidal creek at low tide. Note freeze damage to mangroves in the background.
Preparing to Measure Flow
Scientists set up to measure flow from a mangrove forest.
Scientists set up to measure flow from a mangrove forest.
Measuring a Cross-Sectional Creek Profile
Scientist measures the profile of a tidal creek at low tide. Note mudflat in background.
Scientist measures the profile of a tidal creek at low tide. Note mudflat in background.
Tidal Creek Salt Marsh Recon
Conducting a reconnaissance of a salt marsh-lined tidal creek.
Conducting a reconnaissance of a salt marsh-lined tidal creek.
Scientists Collecting Field Data
Alicia Torregrosa is downloading data from a phenocam on BLM land in Idaho.
Alicia Torregrosa is downloading data from a phenocam on BLM land in Idaho.
Collection Of Sediment And Water Sampling Prior To The Possible Occurrence Of Oil Contamination From The Deepwater Horizon Oil Well At Egmont Key, Florida
linkBruce Bernard (left) and Scott McBride (right) obtain water and sediment samples at Egmont Key which is about 1 mile west of the mouth of Tampa Bay in the Gulf of Mexico. Samples were collected June 14, 2010 prior to the possible occurrence of oil contamination from the Deepwater Horizon's oil well.
Collection Of Sediment And Water Sampling Prior To The Possible Occurrence Of Oil Contamination From The Deepwater Horizon Oil Well At Egmont Key, Florida
linkBruce Bernard (left) and Scott McBride (right) obtain water and sediment samples at Egmont Key which is about 1 mile west of the mouth of Tampa Bay in the Gulf of Mexico. Samples were collected June 14, 2010 prior to the possible occurrence of oil contamination from the Deepwater Horizon's oil well.
Hidden Lake
This picture was taken during sediment coring field work for a project evaluating atmospheric loading of nutrients to high alpine lakes.
This picture was taken during sediment coring field work for a project evaluating atmospheric loading of nutrients to high alpine lakes.