Brent Knights and Jon Vallazza conduct a river productivity study aboard the E.D. Cope, Upper Mississippi River System.
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USGS Scientist at Work
Brent Knights and Jon Vallazza conduct a river productivity study aboard the E.D. Cope, Upper Mississippi River System.
Geo-locating a Well
GPS unit on well head at a private drinking water well.
GPS unit on well head at a private drinking water well.
Determining Alkalinity of a Sample in the Field
Alk titration in the field as part of NAWQA studies.
Alk titration in the field as part of NAWQA studies.
Spiny Dogfish Catch
USGS employee Lisa Gee holds a spiny dogfish that she caught while hook and line sampling.
USGS employee Lisa Gee holds a spiny dogfish that she caught while hook and line sampling.
Potomac River
Stream flowing into the Potomac River in Whites Ferry, Virginia.
Stream flowing into the Potomac River in Whites Ferry, Virginia.
Grand Forks Flooding
2009 Red River flooding in Grand Forks, North Dakota
2009 Red River flooding in Grand Forks, North Dakota
What's in My Water?
This cyanobacteria has radiating filaments and basal heterocysts. Green is DNA stain.
This cyanobacteria has radiating filaments and basal heterocysts. Green is DNA stain.
Ash Falls
Ash Falls on the Niobrara River showcases the Niobrara's uniqueness. Photo was taken to capture falls' legacy.
Ash Falls on the Niobrara River showcases the Niobrara's uniqueness. Photo was taken to capture falls' legacy.
USGS Oceanographer Named to IPCC Report
Asbury (Abby) H. Sallenger has been named one of the authors of a chapter in the next IPCC report, due to be published in 2014. Sallenger has been assigned to co-author Chapter 5 of the Fifth Assessment Report, entitled Coastal Systems and Low-Lying Areas.
Asbury (Abby) H. Sallenger has been named one of the authors of a chapter in the next IPCC report, due to be published in 2014. Sallenger has been assigned to co-author Chapter 5 of the Fifth Assessment Report, entitled Coastal Systems and Low-Lying Areas.
USGS Geographer Named to IPCC Report
Margaret Hiza Redsteer has been named one of the lead authors of a chapter in the next IPCC report, due to be published in 2014. Hiza Redsteer has been assigned as a lead author of Chapter 15 of the Fifth Assessment Report, entitled Adaption, Planning, and Implementation.
Margaret Hiza Redsteer has been named one of the lead authors of a chapter in the next IPCC report, due to be published in 2014. Hiza Redsteer has been assigned as a lead author of Chapter 15 of the Fifth Assessment Report, entitled Adaption, Planning, and Implementation.
Stream in Great Smoky Mountains National Park
Stream in Great Smoky Mountains National Park.
Stream in Great Smoky Mountains National Park.
Beach of the Great Lakes
Great Lakes water availability studies conducted by the U.S. Geological Survey aim to help characterize how much water the Basin has now, how water availability is changing, and how much water it can expect to have in the future.
Great Lakes water availability studies conducted by the U.S. Geological Survey aim to help characterize how much water the Basin has now, how water availability is changing, and how much water it can expect to have in the future.
Souris River
Souris River above Minot, North Dakota.
Souris River above Minot, North Dakota.
Diatoms
Diatoms are algae that reflect the biotic condition of streams, lakes and estuaries. Diatoms are important indicator organisms because they are sensitive to natural and human impacts, and monitoring their condition provides information about ecosystem health. A large, living Pleurosira laevis cell has many disc shaped chloroplasts.
Diatoms are algae that reflect the biotic condition of streams, lakes and estuaries. Diatoms are important indicator organisms because they are sensitive to natural and human impacts, and monitoring their condition provides information about ecosystem health. A large, living Pleurosira laevis cell has many disc shaped chloroplasts.
Flathead Catfish
Biologist holding a flathead catfish caught by trammel net in the Lower Missouri River.
Biologist holding a flathead catfish caught by trammel net in the Lower Missouri River.
Oklahoma Groundwater Efforts
Hydrogeologists examining the Garber-Wellington aquifer and Hennessey Shale confining unit contact near Arcadia Lake, Oklahoma.
Hydrogeologists examining the Garber-Wellington aquifer and Hennessey Shale confining unit contact near Arcadia Lake, Oklahoma.
Retrieving a Trotline on the Lower Missouri River
Retrieving a trotline on the Lower Missouri River in March 2011.
Retrieving a trotline on the Lower Missouri River in March 2011.
Open Water
Open weir at Apple Creek near Menoken, North Dakota. Flow is 36.7 cubic feet per second.
Open weir at Apple Creek near Menoken, North Dakota. Flow is 36.7 cubic feet per second.
North New River Station
An excessive amount of weeds flows down North New River.
An excessive amount of weeds flows down North New River.
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.