Kevin K Johnson
Kevin Johnson is a Hydrologist with the USGS, Central Midwest Water Science Center in Urbana, Illinois.
Education and Certifications
M.S. Geography, University of Illinois, Urbana-Champaign, IL 2017
B.S. Geology, University of Utah, Salt Lake City, UT, 1997
Science and Products
Filter Total Items: 33
Characteristics of a refuge for native freshwater mussels (Bivalvia: Unionidae) in Lake St. Clair Characteristics of a refuge for native freshwater mussels (Bivalvia: Unionidae) in Lake St. Clair
The Lake St. Clair delta (??? 100??km2) provides an important refuge for native freshwater mussels (Unionidae) wherein 22 of the ??? 35 historical species co-occur with invasive dreissenids. A total of 1875 live unionids representing 22 species were found during snorkeling surveys of 32 shallow (??? 1??m) sites throughout the delta. Richness and density of unionids and zebra mussel...
Authors
D.J. McGoldrick, J. L. Metcalfe-Smith, M.T. Arts, D. W. Schloesser, T.J. Newton, G.L. Mackie, E.M. Monroe, J. Biberhofer, Kevin Johnson
Density currents in the Chicago River: Characterization, effects on water quality, and potential sources Density currents in the Chicago River: Characterization, effects on water quality, and potential sources
Bidirectional flows in a river system can occur under stratified flow conditions and in addition to creating significant errors in discharge estimates, the upstream propagating currents are capable of transporting contaminants and affecting water quality. Detailed field observations of bidirectional flows were made in the Chicago River in Chicago, Illinois in the winter of 2005-06. Using...
Authors
P. Ryan Jackson, Carlos M. Garcia, Kevin A. Oberg, Kevin K. Johnson, Marcelo H. Garcia
Habitat use and movement patterns by adult saugers from fall to summer in an unimpounded small-river system Habitat use and movement patterns by adult saugers from fall to summer in an unimpounded small-river system
The Little Wind River drainage in Wyoming is a relatively small unimpounded river system inhabited by native saugers Sander canadensis. Radio telemetry was used to assess habitat use and movement patterns by adult saugers in the river system from fall through early summer. Fifty-four adult saugers were captured during fall 2004, surgically implanted with radio transmitters, and tracked...
Authors
K.M. Kuhn, W.A. Hubert, Kevin Johnson, D. Oberlie, D. Dufek
Contaminant levels in eggs of American white pelicans, Pelecanus erythrorhynchos, from Chase Lake, North Dakota Contaminant levels in eggs of American white pelicans, Pelecanus erythrorhynchos, from Chase Lake, North Dakota
American White Pelicans (Pelecanus erythrorhynchos) are colonial nesters, making them susceptible to site-specific mortality factors. One of the largest known breeding colonies is at Chase Lake National Wildlife Refuge in North Dakota. In 2004, this colony suffered total reproductive failure. In 2005, we collected abandoned eggs from this colony to test for environmental contaminants...
Authors
Pamela J. Pietz, Marsha A. Sovada, Christine M. Custer, Thomas W. Custer, Kevin M. Johnson
Mercury and methylmercury in water and bottom sediments of wetlands at Lostwood National Wildlife Refuge, North Dakota, 2003-04 Mercury and methylmercury in water and bottom sediments of wetlands at Lostwood National Wildlife Refuge, North Dakota, 2003-04
Certain ecosystem types, particularly wetlands, have environmental characteristics that can make them particularly sensitive to mercury inputs and that can result in large mercury concentrations in fish or other aquatic biota. To provide information needed to make effective management decisions to decrease human and wildlife exposure to methylmercury in northern prairie pothole wetlands...
Authors
Steven K. Sando, D. P. Krabbenhoft, Kevin M. Johnson, Robert F. Lundgren, Douglas G. Emerson
Characterizing a December 2005 density current event in the Chicago River, Chicago, Illinois Characterizing a December 2005 density current event in the Chicago River, Chicago, Illinois
During the winter months, the Chicago River in Chicago, Illinois is subject to bi-directional flows, and density currents are thought to be responsible for these flow variations. This paper presents detailed field measurements using three acoustic Doppler current profiler instruments and simultaneous water-quality measurements made during December 2005. Observations indicate that the...
Authors
C.M. Garcia, P.R. Jackson, K. A. Oberg, K. K. Johnson, M.H. Garcia
Science and Products
Filter Total Items: 33
Characteristics of a refuge for native freshwater mussels (Bivalvia: Unionidae) in Lake St. Clair Characteristics of a refuge for native freshwater mussels (Bivalvia: Unionidae) in Lake St. Clair
The Lake St. Clair delta (??? 100??km2) provides an important refuge for native freshwater mussels (Unionidae) wherein 22 of the ??? 35 historical species co-occur with invasive dreissenids. A total of 1875 live unionids representing 22 species were found during snorkeling surveys of 32 shallow (??? 1??m) sites throughout the delta. Richness and density of unionids and zebra mussel...
Authors
D.J. McGoldrick, J. L. Metcalfe-Smith, M.T. Arts, D. W. Schloesser, T.J. Newton, G.L. Mackie, E.M. Monroe, J. Biberhofer, Kevin Johnson
Density currents in the Chicago River: Characterization, effects on water quality, and potential sources Density currents in the Chicago River: Characterization, effects on water quality, and potential sources
Bidirectional flows in a river system can occur under stratified flow conditions and in addition to creating significant errors in discharge estimates, the upstream propagating currents are capable of transporting contaminants and affecting water quality. Detailed field observations of bidirectional flows were made in the Chicago River in Chicago, Illinois in the winter of 2005-06. Using...
Authors
P. Ryan Jackson, Carlos M. Garcia, Kevin A. Oberg, Kevin K. Johnson, Marcelo H. Garcia
Habitat use and movement patterns by adult saugers from fall to summer in an unimpounded small-river system Habitat use and movement patterns by adult saugers from fall to summer in an unimpounded small-river system
The Little Wind River drainage in Wyoming is a relatively small unimpounded river system inhabited by native saugers Sander canadensis. Radio telemetry was used to assess habitat use and movement patterns by adult saugers in the river system from fall through early summer. Fifty-four adult saugers were captured during fall 2004, surgically implanted with radio transmitters, and tracked...
Authors
K.M. Kuhn, W.A. Hubert, Kevin Johnson, D. Oberlie, D. Dufek
Contaminant levels in eggs of American white pelicans, Pelecanus erythrorhynchos, from Chase Lake, North Dakota Contaminant levels in eggs of American white pelicans, Pelecanus erythrorhynchos, from Chase Lake, North Dakota
American White Pelicans (Pelecanus erythrorhynchos) are colonial nesters, making them susceptible to site-specific mortality factors. One of the largest known breeding colonies is at Chase Lake National Wildlife Refuge in North Dakota. In 2004, this colony suffered total reproductive failure. In 2005, we collected abandoned eggs from this colony to test for environmental contaminants...
Authors
Pamela J. Pietz, Marsha A. Sovada, Christine M. Custer, Thomas W. Custer, Kevin M. Johnson
Mercury and methylmercury in water and bottom sediments of wetlands at Lostwood National Wildlife Refuge, North Dakota, 2003-04 Mercury and methylmercury in water and bottom sediments of wetlands at Lostwood National Wildlife Refuge, North Dakota, 2003-04
Certain ecosystem types, particularly wetlands, have environmental characteristics that can make them particularly sensitive to mercury inputs and that can result in large mercury concentrations in fish or other aquatic biota. To provide information needed to make effective management decisions to decrease human and wildlife exposure to methylmercury in northern prairie pothole wetlands...
Authors
Steven K. Sando, D. P. Krabbenhoft, Kevin M. Johnson, Robert F. Lundgren, Douglas G. Emerson
Characterizing a December 2005 density current event in the Chicago River, Chicago, Illinois Characterizing a December 2005 density current event in the Chicago River, Chicago, Illinois
During the winter months, the Chicago River in Chicago, Illinois is subject to bi-directional flows, and density currents are thought to be responsible for these flow variations. This paper presents detailed field measurements using three acoustic Doppler current profiler instruments and simultaneous water-quality measurements made during December 2005. Observations indicate that the...
Authors
C.M. Garcia, P.R. Jackson, K. A. Oberg, K. K. Johnson, M.H. Garcia