Robert Darner
Groundwater Specialist, Ohio-Kentucky-Indiana Water Science Center
Science and Products
Filter Total Items: 20
Water and bed-sediment quality in the vicinity of Berlin Lake, Ohio, 2001 Water and bed-sediment quality in the vicinity of Berlin Lake, Ohio, 2001
Berlin Lake, in northeast Ohio, was created by the U.S. Army Corps of Engineers in 1943 and is used primarily for flood control for the upper reaches of the Mahoning River. The area surrounding and under the lake has been tapped for oil and natural gas production. One of the by-products of oil and gas production is concentrated salt water or brine, which might have an effect on the...
Authors
Robert Darner
Lag times of bank filtration at a well field, Cincinnati, Ohio, USA Lag times of bank filtration at a well field, Cincinnati, Ohio, USA
Wells placed next to surface-water bodies to induce infiltration have come under scrutiny because of the presence of the potential pathogens in surface water. Removal of pathogens and other contaminants by bank filtration is assumed, but regulatory agencies question the effectiveness of this process. To investigate transport processes of biological constituents, advective groundwater...
Authors
R. Sheets, R.A. Darner, B.L. Whitteberry
Ground-water quality in Geauga County, Ohio — Review of previous studies, status in 1999, and comparison of 1986 and 1999 data Ground-water quality in Geauga County, Ohio — Review of previous studies, status in 1999, and comparison of 1986 and 1999 data
Most residents in Geauga County, Ohio, rely on ground water as their primary source of drinking water. With population growing at a steady rate, the possibility that human activity will affect ground-water quality becomes considerable. This report presents the results of a study by the U.S. Geological Survey (USGS), in cooperation with the Geauga County Planning Commission and Board of...
Authors
Martha Jagucki, Robert Darner
Comparison of methods for determining Escherichia coli concentrations in recreational waters Comparison of methods for determining Escherichia coli concentrations in recreational waters
Seventy water samples were collected from three Lake Erie beaches to compare recoveries of Escherichia coli (E. coli) using the USEPA-recommended method for recreational waters (mTEC) to recoveries using three alternative methods (MI, modified mTEC, and Colilert). Statistical tests showed no differences in recoveries of E. coli between MI and mTEC; however, statistically-significant...
Authors
D.S. Francy, R.A. Darner
Identification of potential wetlands in training areas on Ravenna Army Ammunition Plant, Ohio, and guidelines for their management Identification of potential wetlands in training areas on Ravenna Army Ammunition Plant, Ohio, and guidelines for their management
Potential wetlands in training areas on Ravenna Army Ammunition Plant, Ohio, were mapped by use of geographic information system (GIS) data layers and field inspection. The GIS data layers were compiled from existing sources and interpretation of aerial photography. Data layers used in the GIS analysis were wetland-plant communities, hydric soils, National Wetlands Inventory designated...
Authors
C. Schalk, J.S. Tertuliani, R.A. Darner
Descriptions of selected digital spatial data for Ravenna Army Ammunition Plant, Ohio Descriptions of selected digital spatial data for Ravenna Army Ammunition Plant, Ohio
Digital spatial data of Ravenna Army Ammunition Plant (RVAAP), in northeastern Ohio, were compiled or generated from existing maps for U.S. Army Industrial Operations Command. The data are in the Ohio north state-plane coordinate system (North American Datum of 1983) in an ARC/INFO geographic information system format. The data comprise 15 layers, which include boundaries, topography...
Authors
C. Schalk, R.A. Darner
Factors affecting Escherichia coli concentrations at Lake Erie public bathing beaches Factors affecting Escherichia coli concentrations at Lake Erie public bathing beaches
The environmental and water-quality factors that affect concentrations of Escherichia coli (E. coli) in water and sediment were investigated at three public bathing beachesEdgewater Park, Villa Angela, and Sims Parkin the Cleveland, Ohio metropolitan area. This study was done to aid in the determination of safe recreational use and to help water- resource managers assess more quickly and
Authors
Donna Francy, Robert Darner
How do we determine when the beaches are safe for swimming? How do we determine when the beaches are safe for swimming?
The use of Lake Erie and other public waters for swimming is a valuable recreational resource for the people of Ohio and elsewhere in the United States. Water-resource managers and the scientific community have recognized the need for rapid methods to determine the quality of these recreational waters to adequately protect public health. Fecal-indicator bacteria, such as Escherichia...
Authors
Ronald Veley, Donna Francy, Robert Darner
Science and Products
Filter Total Items: 20
Water and bed-sediment quality in the vicinity of Berlin Lake, Ohio, 2001 Water and bed-sediment quality in the vicinity of Berlin Lake, Ohio, 2001
Berlin Lake, in northeast Ohio, was created by the U.S. Army Corps of Engineers in 1943 and is used primarily for flood control for the upper reaches of the Mahoning River. The area surrounding and under the lake has been tapped for oil and natural gas production. One of the by-products of oil and gas production is concentrated salt water or brine, which might have an effect on the...
Authors
Robert Darner
Lag times of bank filtration at a well field, Cincinnati, Ohio, USA Lag times of bank filtration at a well field, Cincinnati, Ohio, USA
Wells placed next to surface-water bodies to induce infiltration have come under scrutiny because of the presence of the potential pathogens in surface water. Removal of pathogens and other contaminants by bank filtration is assumed, but regulatory agencies question the effectiveness of this process. To investigate transport processes of biological constituents, advective groundwater...
Authors
R. Sheets, R.A. Darner, B.L. Whitteberry
Ground-water quality in Geauga County, Ohio — Review of previous studies, status in 1999, and comparison of 1986 and 1999 data Ground-water quality in Geauga County, Ohio — Review of previous studies, status in 1999, and comparison of 1986 and 1999 data
Most residents in Geauga County, Ohio, rely on ground water as their primary source of drinking water. With population growing at a steady rate, the possibility that human activity will affect ground-water quality becomes considerable. This report presents the results of a study by the U.S. Geological Survey (USGS), in cooperation with the Geauga County Planning Commission and Board of...
Authors
Martha Jagucki, Robert Darner
Comparison of methods for determining Escherichia coli concentrations in recreational waters Comparison of methods for determining Escherichia coli concentrations in recreational waters
Seventy water samples were collected from three Lake Erie beaches to compare recoveries of Escherichia coli (E. coli) using the USEPA-recommended method for recreational waters (mTEC) to recoveries using three alternative methods (MI, modified mTEC, and Colilert). Statistical tests showed no differences in recoveries of E. coli between MI and mTEC; however, statistically-significant...
Authors
D.S. Francy, R.A. Darner
Identification of potential wetlands in training areas on Ravenna Army Ammunition Plant, Ohio, and guidelines for their management Identification of potential wetlands in training areas on Ravenna Army Ammunition Plant, Ohio, and guidelines for their management
Potential wetlands in training areas on Ravenna Army Ammunition Plant, Ohio, were mapped by use of geographic information system (GIS) data layers and field inspection. The GIS data layers were compiled from existing sources and interpretation of aerial photography. Data layers used in the GIS analysis were wetland-plant communities, hydric soils, National Wetlands Inventory designated...
Authors
C. Schalk, J.S. Tertuliani, R.A. Darner
Descriptions of selected digital spatial data for Ravenna Army Ammunition Plant, Ohio Descriptions of selected digital spatial data for Ravenna Army Ammunition Plant, Ohio
Digital spatial data of Ravenna Army Ammunition Plant (RVAAP), in northeastern Ohio, were compiled or generated from existing maps for U.S. Army Industrial Operations Command. The data are in the Ohio north state-plane coordinate system (North American Datum of 1983) in an ARC/INFO geographic information system format. The data comprise 15 layers, which include boundaries, topography...
Authors
C. Schalk, R.A. Darner
Factors affecting Escherichia coli concentrations at Lake Erie public bathing beaches Factors affecting Escherichia coli concentrations at Lake Erie public bathing beaches
The environmental and water-quality factors that affect concentrations of Escherichia coli (E. coli) in water and sediment were investigated at three public bathing beachesEdgewater Park, Villa Angela, and Sims Parkin the Cleveland, Ohio metropolitan area. This study was done to aid in the determination of safe recreational use and to help water- resource managers assess more quickly and
Authors
Donna Francy, Robert Darner
How do we determine when the beaches are safe for swimming? How do we determine when the beaches are safe for swimming?
The use of Lake Erie and other public waters for swimming is a valuable recreational resource for the people of Ohio and elsewhere in the United States. Water-resource managers and the scientific community have recognized the need for rapid methods to determine the quality of these recreational waters to adequately protect public health. Fecal-indicator bacteria, such as Escherichia...
Authors
Ronald Veley, Donna Francy, Robert Darner