Gary P Johnson (Former Employee)
Science and Products
Filter Total Items: 29
The Great Flood of 1993 on the Upper Mississippi River—10 years later The Great Flood of 1993 on the Upper Mississippi River—10 years later
Ten years ago, the upper Mississippi River Basin in the Midwestern United States experienced the costliest flood in the history of the United States. The flood came to be known as “ The Great Flood of 1993.”
Authors
Gary P. Johnson, Robert R. Holmes, Loyd A. Waite
The history of dinosaur footprint discoveries in Wyoming with emphasis on the Bighorn Basin The history of dinosaur footprint discoveries in Wyoming with emphasis on the Bighorn Basin
Dinosaur traces are well known from the western United States in the Colorado Plateau region (Utah, Colorado, New Mexico, and Arizona). Utah contains the greatest abundance of known and documented dinosaur footprints and trackways. Far less well known, however, is the occurrence and distribution of dinosaur footprint-bearing horizons in Wyoming. Scientific studies over the past 10 years...
Authors
Erik P. Kvale, Debra L. Mickelson, Stephen T Hasiotis, Gary D. Johnson
Monitoring and analysis of combined sewer overflows, Riverside and Evanston, Illinois, 1997-99 Monitoring and analysis of combined sewer overflows, Riverside and Evanston, Illinois, 1997-99
The U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers, collected and analyzed flow data in combined sewer systems in Riverside and Evanston, northeastern Illinois, from March 1997 to December 1999. Continuous 2- and 5-minute stage and velocity data were collected during surcharged and nonsurcharged conditions at 12 locations. Mass balances were calculated to...
Authors
Andrew M. Waite, Nancy J. Hornewer, Gary P. Johnson
Methodology, data collection, and data analysis for determination of water-mixing patterns induced by aerators and mixers Methodology, data collection, and data analysis for determination of water-mixing patterns induced by aerators and mixers
The U.S. Geological Survey collected and analyzed data to describe mixing patterns induced by aerators and mixers to aid in the calibration and verification of a three-dimensional hydrodynamic model. During September 1995, three-dimensional water-velocity profiles were collected during the operation of fine-bubble and coarse-bubble aerators in a test tank at the U.S. Army Corps of...
Authors
Gary P. Johnson, Nancy J. Hornewer, Dale M. Robertson, Darren T. Olson, Josh Gioja
Hydrology, water quality, and nutrient loads to Lake Catherine and Channel Lake, near Antioch, Lake County, Illinois Hydrology, water quality, and nutrient loads to Lake Catherine and Channel Lake, near Antioch, Lake County, Illinois
From April 21, 1998, through April 30, 1999, the U.S. Geological Survey, in cooperation with the Fox Waterway Agency, conducted an investigation designed to characterize the hydrology, water quality, hydrologic budget, sediment budget, and nutrient budget of Lake Catherine and Channel Lake, Lake County, Illinois. These lakes are the northernmost lakes of the Fox Chain of Lakes. Lake...
Authors
Robert T. Kay, Gary P. Johnson, David L. Schrader
Water sediment, and nutrient budgets, and bathymetric survey of Old and New Gillespie Lakes, Macoupin County, Illinois, May 1996-April 1997; with a discussion of lake-management practices Water sediment, and nutrient budgets, and bathymetric survey of Old and New Gillespie Lakes, Macoupin County, Illinois, May 1996-April 1997; with a discussion of lake-management practices
The Gillespie Lakes system serves as a drinking water source for the town of Gillespie, Illinois, and is a major recreational focus for the area. As part of an investigation of a concern that the lakes are being adversely affected by excessive sediment and nutrient in flows, this report presents hydrologic, sediment, and nutrient budgets for Old Gillespie Lake and New Gillespie Lake...
Authors
Gary P. Johnson
Science and Products
Filter Total Items: 29
The Great Flood of 1993 on the Upper Mississippi River—10 years later The Great Flood of 1993 on the Upper Mississippi River—10 years later
Ten years ago, the upper Mississippi River Basin in the Midwestern United States experienced the costliest flood in the history of the United States. The flood came to be known as “ The Great Flood of 1993.”
Authors
Gary P. Johnson, Robert R. Holmes, Loyd A. Waite
The history of dinosaur footprint discoveries in Wyoming with emphasis on the Bighorn Basin The history of dinosaur footprint discoveries in Wyoming with emphasis on the Bighorn Basin
Dinosaur traces are well known from the western United States in the Colorado Plateau region (Utah, Colorado, New Mexico, and Arizona). Utah contains the greatest abundance of known and documented dinosaur footprints and trackways. Far less well known, however, is the occurrence and distribution of dinosaur footprint-bearing horizons in Wyoming. Scientific studies over the past 10 years...
Authors
Erik P. Kvale, Debra L. Mickelson, Stephen T Hasiotis, Gary D. Johnson
Monitoring and analysis of combined sewer overflows, Riverside and Evanston, Illinois, 1997-99 Monitoring and analysis of combined sewer overflows, Riverside and Evanston, Illinois, 1997-99
The U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers, collected and analyzed flow data in combined sewer systems in Riverside and Evanston, northeastern Illinois, from March 1997 to December 1999. Continuous 2- and 5-minute stage and velocity data were collected during surcharged and nonsurcharged conditions at 12 locations. Mass balances were calculated to...
Authors
Andrew M. Waite, Nancy J. Hornewer, Gary P. Johnson
Methodology, data collection, and data analysis for determination of water-mixing patterns induced by aerators and mixers Methodology, data collection, and data analysis for determination of water-mixing patterns induced by aerators and mixers
The U.S. Geological Survey collected and analyzed data to describe mixing patterns induced by aerators and mixers to aid in the calibration and verification of a three-dimensional hydrodynamic model. During September 1995, three-dimensional water-velocity profiles were collected during the operation of fine-bubble and coarse-bubble aerators in a test tank at the U.S. Army Corps of...
Authors
Gary P. Johnson, Nancy J. Hornewer, Dale M. Robertson, Darren T. Olson, Josh Gioja
Hydrology, water quality, and nutrient loads to Lake Catherine and Channel Lake, near Antioch, Lake County, Illinois Hydrology, water quality, and nutrient loads to Lake Catherine and Channel Lake, near Antioch, Lake County, Illinois
From April 21, 1998, through April 30, 1999, the U.S. Geological Survey, in cooperation with the Fox Waterway Agency, conducted an investigation designed to characterize the hydrology, water quality, hydrologic budget, sediment budget, and nutrient budget of Lake Catherine and Channel Lake, Lake County, Illinois. These lakes are the northernmost lakes of the Fox Chain of Lakes. Lake...
Authors
Robert T. Kay, Gary P. Johnson, David L. Schrader
Water sediment, and nutrient budgets, and bathymetric survey of Old and New Gillespie Lakes, Macoupin County, Illinois, May 1996-April 1997; with a discussion of lake-management practices Water sediment, and nutrient budgets, and bathymetric survey of Old and New Gillespie Lakes, Macoupin County, Illinois, May 1996-April 1997; with a discussion of lake-management practices
The Gillespie Lakes system serves as a drinking water source for the town of Gillespie, Illinois, and is a major recreational focus for the area. As part of an investigation of a concern that the lakes are being adversely affected by excessive sediment and nutrient in flows, this report presents hydrologic, sediment, and nutrient budgets for Old Gillespie Lake and New Gillespie Lake...
Authors
Gary P. Johnson