Douglas J Schnoebelen (Former Employee)
Science and Products
Filter Total Items: 21
Lagrangian sampling of wastewater treatment plant effluent in Boulder Creek, Colorado, and Fourmile Creek, Iowa, during the summer of 2003 and spring of 2005— Hydrological and water-quality data
This report presents methods and data for a Lagrangian sampling investigation into chemical loading and in-stream attenuation of inorganic and organic contaminants in two wastewater treatment-plant effluent-dominated streams: Boulder Creek, Colorado, and Fourmile Creek, Iowa. Water-quality sampling was timed to coincide with low-flow conditions when dilution of the wastewater treatment...
Authors
Larry B. Barber, Steffanie H. Keefe, Dana W. Kolpin, Douglas James Schnoebelen, Jennifer L. Flynn, Gregory P Brown, Edward Furlong, Susan T. Glassmeyer, James L. Gray, Michael Frederick Meyer, Mark W. Sandstrom, Howard E. Taylor, Steven D. Zaugg
Selected water-quality data from the Cedar River and Cedar Rapids well fields, Cedar Rapids, Iowa, 1999–2005
The Cedar River alluvial aquifer is the primary source of municipal water in the Cedar Rapids, Iowa area. Municipal wells are completed in the alluvial aquifer at approximately 40 to 80 feet deep. The City of Cedar Rapids and the U.S. Geological Survey have been conducting a cooperative study of the groundwater-flow system and water quality near the well fields since 1992. Previous...
Authors
Gregory R. Littin, Douglas James Schnoebelen
Occurrence of transformation products in the environment
Historically, most environmental occurrence research has focused on the parent compounds of organic contaminants. Research, however, has documented that the environmental transport of chemicals, such as pesticides and emerging contaminants, are substantially underestimated if transformation products are not considered. Although most examples described herein were drawn from research...
Authors
Dana W. Kolpin, William Battaglin, Kathleen Conn, Edward Furlong, Susan T. Glassmeyer, Stephen J. Kalkhoff, Michael Frederick Meyer, Douglas James Schnoebelen
Effectiveness of an alluvial wetland on improving ground-water quality in a municipal well field, Cedar Rapids, Iowa, 1998-2006
Nutrients and pesticides are water-quality topics of concern in Iowa. Nitrate concentrations in the Cedar River and other streams in Iowa are among the highest in the Nation. A 12-mile reach of the Cedar River upstream from Cedar Rapids, Iowa, is identified on the Total Maximum Daily Load list for nitrate impairment by the U.S. Environmental Protection Agency. In addition, pesticide...
Authors
Douglas James Schnoebelen
Research plan and preliminary results: A field research site for emerging contaminants in Iowa
Research has recently documented the prevalence of a wide variety of pharmaceuticals and other emerging contaminants (ECs) in streams across the United States. Wastewater treatment plants (WWTPs) have been found to be an important source and collection point of ECs to streams as many ECs are incompletely removed during treatment. To investigate the complex in-stream processes (e.g...
Authors
Douglas James Schnoebelen, Dana W. Kolpin, Larry B. Barber, Edward Furlong, Michael Frederick Meyer, M. Skopec
Water-quality assessment of the eastern Iowa Basins: Selected pesticides and pesticide degradates in streams, 1996-98
Water samples were collected in streams of the Eastern Iowa Basins study unit from 1996 to 1998 as part of the U.S. Geological Survey’s National Water-Quality Assessment (NAWQA) Program. More than 350 samples were collected to document the occurrence, distribution, and transport of pesticides and pesticide degradates. The Eastern Iowa Basins study unit encompasses about 50,500 square...
Authors
Douglas James Schnoebelen, Stephen J. Kalkhoff, Kent Becher, E. Michael Thurman
Bathymetric mapping, sediment quality, and water quality of Lake Delhi, Iowa, 2001-02
Lake Delhi was formed in 1929 when the Interstate Power Company dammed the Maquoketa River near Delhi, Iowa, for generation of hydroelectric power. The resulting 450-acre lake became a popular area in eastern Iowa for boating, swimming, and fishing. Hydroelectric power generation ended in 1973, and lakeside residents purchased the dam to maintain the recreational opportunities of the...
Authors
Douglas James Schnoebelen, Jason McVay, Kimberlee K. Barnes, Kent Becher
It's not just how high; it's how clean: Sampling the spring 2001 flood in the Upper Mississippi River Basin
Floods can cause water-quality problems because of the large amounts of contaminants (sediment, nutrients, pesticides, and bacteria) that can be transported by floodwaters. during the flood on the Upper Mississippi River in 2001, water-quality and water-quality data were collected during near-record streamflow. This is the first time that samples for determining organic wastewater...
Authors
Glenn G. Patterson, Dana W. Kolpin, Stephen J. Kalkhoff, Kathy Lee, Douglas James Schnoebelen, Kimberlee K. Barnes, Richard H. Coupe
Occurrence and distribution of pesticides in streams of the Eastern Iowa Basins, 1996-98
The U.S. Geological Survey began collection of water samples in streams of the Eastern Iowa Basins in 1996 for the analysis of pesticides and pesticide degradates as part of the National Water Quality Assessment Program (NAWQA). This study provides some of the first large scale monitoring data on pesticides and pesticide degradates in Eastern Iowa. Three hundred and forty-four samples...
Authors
Douglas James Schnoebelen, Stephen J. Kalkhoff, Kent Becher
The occurrence of chloroacetanilide and triazine herbicide degradates in streams in eastern Iowa
No abstract available.
Authors
Stephen J. Kalkhoff, Douglas James Schnoebelen, E. Michael Thurman
Water quality in the eastern Iowa basins
This article summarizes major findings about nutrients in surface and groundwater in the eastern Iowa basins (see map) between 1996 and 1998. The data were collected as part of the U.S. Geological Survey (USGS) National Water-Quality Assessment Program (NAWQA). Water quality is discussed in terms of local and regional issues and compared with conditions found in all 36 National NAWQA...
Authors
Stephen J. Kalkhoff, Kimberlee K. Barnes, Kent Becher, Mark E. Savoca, Douglas James Schnoebelen, Eric M. Sadorf, Stephen D. Porter, Daniel J. Sullivan, John Creswell
Water-quality assessment of the eastern Iowa basins– Nitrogen, phosphorus, suspended sediment, and organic carbon in surface water, 1996–98
Twelve sites on streams and rivers in the Eastern Iowa Basins study unit were sampled monthly and during selected storm events from March 1996 through September 1998 to assess the occurrence, distribution, and transport of nitrogen, phosphorus, suspended sediment, and organic carbon as part of the U.S. Geological Survey’s National Water-Quality Assessment Program. One site was dropped...
Authors
Kent Becher, Stephen J. Kalkhoff, Douglas James Schnoebelen, Kimberlee K. Barnes, Von E. Miller
Urban Waters Federal Partnership - Edwards Aquifer Recharge in a Developing Landscape
San Antonio Texas consistently ranks as one of the fastest growing large cities in the United States. Urban development can affect groundwater quality as trees and open space are replaced by buildings and roads, increasing the amount of urban runoff draining directly into the Edwards aquifer. A network of sophisticated surface water and groundwater monitoring sites is being used to help managers...
Karst Interest Group (KIG) Workshop
The Karst Interest Group’s (KIG) mission is to encourage and support collaboration and technology transfer among scientists working in karst areas. The KIG encourages cooperative studies between USGS Programs and Water Science Centers, and between USGS and other Federal agencies, State and local agencies, and universities. The 9th USGS KIG Workshop was October 22-24, 2024 in Nashville, TN.
Urban Waters Federal Partnership - Suspended Sediment and Nutrient Delivery to the Gulf of America
Suspended sediment and nutrients from greater San Antonio can affect instream ecological health of the San Antonio River and ultimately impact Gulf of America bays and estuaries. Real-time monitoring in urban and rural parts of the river basin may provide a glimpse into the importance of urban sediment and nutrient sources. Real-time sensors provide a tool to better understand and manage water...
Science and Products
Filter Total Items: 21
Lagrangian sampling of wastewater treatment plant effluent in Boulder Creek, Colorado, and Fourmile Creek, Iowa, during the summer of 2003 and spring of 2005— Hydrological and water-quality data
This report presents methods and data for a Lagrangian sampling investigation into chemical loading and in-stream attenuation of inorganic and organic contaminants in two wastewater treatment-plant effluent-dominated streams: Boulder Creek, Colorado, and Fourmile Creek, Iowa. Water-quality sampling was timed to coincide with low-flow conditions when dilution of the wastewater treatment...
Authors
Larry B. Barber, Steffanie H. Keefe, Dana W. Kolpin, Douglas James Schnoebelen, Jennifer L. Flynn, Gregory P Brown, Edward Furlong, Susan T. Glassmeyer, James L. Gray, Michael Frederick Meyer, Mark W. Sandstrom, Howard E. Taylor, Steven D. Zaugg
Selected water-quality data from the Cedar River and Cedar Rapids well fields, Cedar Rapids, Iowa, 1999–2005
The Cedar River alluvial aquifer is the primary source of municipal water in the Cedar Rapids, Iowa area. Municipal wells are completed in the alluvial aquifer at approximately 40 to 80 feet deep. The City of Cedar Rapids and the U.S. Geological Survey have been conducting a cooperative study of the groundwater-flow system and water quality near the well fields since 1992. Previous...
Authors
Gregory R. Littin, Douglas James Schnoebelen
Occurrence of transformation products in the environment
Historically, most environmental occurrence research has focused on the parent compounds of organic contaminants. Research, however, has documented that the environmental transport of chemicals, such as pesticides and emerging contaminants, are substantially underestimated if transformation products are not considered. Although most examples described herein were drawn from research...
Authors
Dana W. Kolpin, William Battaglin, Kathleen Conn, Edward Furlong, Susan T. Glassmeyer, Stephen J. Kalkhoff, Michael Frederick Meyer, Douglas James Schnoebelen
Effectiveness of an alluvial wetland on improving ground-water quality in a municipal well field, Cedar Rapids, Iowa, 1998-2006
Nutrients and pesticides are water-quality topics of concern in Iowa. Nitrate concentrations in the Cedar River and other streams in Iowa are among the highest in the Nation. A 12-mile reach of the Cedar River upstream from Cedar Rapids, Iowa, is identified on the Total Maximum Daily Load list for nitrate impairment by the U.S. Environmental Protection Agency. In addition, pesticide...
Authors
Douglas James Schnoebelen
Research plan and preliminary results: A field research site for emerging contaminants in Iowa
Research has recently documented the prevalence of a wide variety of pharmaceuticals and other emerging contaminants (ECs) in streams across the United States. Wastewater treatment plants (WWTPs) have been found to be an important source and collection point of ECs to streams as many ECs are incompletely removed during treatment. To investigate the complex in-stream processes (e.g...
Authors
Douglas James Schnoebelen, Dana W. Kolpin, Larry B. Barber, Edward Furlong, Michael Frederick Meyer, M. Skopec
Water-quality assessment of the eastern Iowa Basins: Selected pesticides and pesticide degradates in streams, 1996-98
Water samples were collected in streams of the Eastern Iowa Basins study unit from 1996 to 1998 as part of the U.S. Geological Survey’s National Water-Quality Assessment (NAWQA) Program. More than 350 samples were collected to document the occurrence, distribution, and transport of pesticides and pesticide degradates. The Eastern Iowa Basins study unit encompasses about 50,500 square...
Authors
Douglas James Schnoebelen, Stephen J. Kalkhoff, Kent Becher, E. Michael Thurman
Bathymetric mapping, sediment quality, and water quality of Lake Delhi, Iowa, 2001-02
Lake Delhi was formed in 1929 when the Interstate Power Company dammed the Maquoketa River near Delhi, Iowa, for generation of hydroelectric power. The resulting 450-acre lake became a popular area in eastern Iowa for boating, swimming, and fishing. Hydroelectric power generation ended in 1973, and lakeside residents purchased the dam to maintain the recreational opportunities of the...
Authors
Douglas James Schnoebelen, Jason McVay, Kimberlee K. Barnes, Kent Becher
It's not just how high; it's how clean: Sampling the spring 2001 flood in the Upper Mississippi River Basin
Floods can cause water-quality problems because of the large amounts of contaminants (sediment, nutrients, pesticides, and bacteria) that can be transported by floodwaters. during the flood on the Upper Mississippi River in 2001, water-quality and water-quality data were collected during near-record streamflow. This is the first time that samples for determining organic wastewater...
Authors
Glenn G. Patterson, Dana W. Kolpin, Stephen J. Kalkhoff, Kathy Lee, Douglas James Schnoebelen, Kimberlee K. Barnes, Richard H. Coupe
Occurrence and distribution of pesticides in streams of the Eastern Iowa Basins, 1996-98
The U.S. Geological Survey began collection of water samples in streams of the Eastern Iowa Basins in 1996 for the analysis of pesticides and pesticide degradates as part of the National Water Quality Assessment Program (NAWQA). This study provides some of the first large scale monitoring data on pesticides and pesticide degradates in Eastern Iowa. Three hundred and forty-four samples...
Authors
Douglas James Schnoebelen, Stephen J. Kalkhoff, Kent Becher
The occurrence of chloroacetanilide and triazine herbicide degradates in streams in eastern Iowa
No abstract available.
Authors
Stephen J. Kalkhoff, Douglas James Schnoebelen, E. Michael Thurman
Water quality in the eastern Iowa basins
This article summarizes major findings about nutrients in surface and groundwater in the eastern Iowa basins (see map) between 1996 and 1998. The data were collected as part of the U.S. Geological Survey (USGS) National Water-Quality Assessment Program (NAWQA). Water quality is discussed in terms of local and regional issues and compared with conditions found in all 36 National NAWQA...
Authors
Stephen J. Kalkhoff, Kimberlee K. Barnes, Kent Becher, Mark E. Savoca, Douglas James Schnoebelen, Eric M. Sadorf, Stephen D. Porter, Daniel J. Sullivan, John Creswell
Water-quality assessment of the eastern Iowa basins– Nitrogen, phosphorus, suspended sediment, and organic carbon in surface water, 1996–98
Twelve sites on streams and rivers in the Eastern Iowa Basins study unit were sampled monthly and during selected storm events from March 1996 through September 1998 to assess the occurrence, distribution, and transport of nitrogen, phosphorus, suspended sediment, and organic carbon as part of the U.S. Geological Survey’s National Water-Quality Assessment Program. One site was dropped...
Authors
Kent Becher, Stephen J. Kalkhoff, Douglas James Schnoebelen, Kimberlee K. Barnes, Von E. Miller
Urban Waters Federal Partnership - Edwards Aquifer Recharge in a Developing Landscape
San Antonio Texas consistently ranks as one of the fastest growing large cities in the United States. Urban development can affect groundwater quality as trees and open space are replaced by buildings and roads, increasing the amount of urban runoff draining directly into the Edwards aquifer. A network of sophisticated surface water and groundwater monitoring sites is being used to help managers...
Karst Interest Group (KIG) Workshop
The Karst Interest Group’s (KIG) mission is to encourage and support collaboration and technology transfer among scientists working in karst areas. The KIG encourages cooperative studies between USGS Programs and Water Science Centers, and between USGS and other Federal agencies, State and local agencies, and universities. The 9th USGS KIG Workshop was October 22-24, 2024 in Nashville, TN.
Urban Waters Federal Partnership - Suspended Sediment and Nutrient Delivery to the Gulf of America
Suspended sediment and nutrients from greater San Antonio can affect instream ecological health of the San Antonio River and ultimately impact Gulf of America bays and estuaries. Real-time monitoring in urban and rural parts of the river basin may provide a glimpse into the importance of urban sediment and nutrient sources. Real-time sensors provide a tool to better understand and manage water...