Nancy Baker (Former Employee)
Science and Products
Agricultural Pesticide Use Estimates for Selected Watersheds of the Surface Water Trends Project, 1992-2014, National Water Quality Program Agricultural Pesticide Use Estimates for Selected Watersheds of the Surface Water Trends Project, 1992-2014, National Water Quality Program
The U.S. Geological Survey (USGS) National Water Quality Program (NWQP) provides an understanding of water-quality conditions; whether conditions are getting better or worse over time; and how natural features and human activities affect those conditions. The Surface Water Trends (SWT) project of NWQP evaluates the directions, periods, and statistical significance of trends in water...
Agricultural Pesticide Use Estimates for the USGS National Water Quality Network, 1992-2014: Version 2 Agricultural Pesticide Use Estimates for the USGS National Water Quality Network, 1992-2014: Version 2
The National Water Quality Network (NWQN) for Rivers and Streams includes 113 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program (NWQP). The NWQN represents the consolidation of four historical national networks: the USGS National Water-Quality Assessment (NAWQA) Project, the USGS National Stream Quality Accounting Network...
Datasets for the Report Entitled: "A Method for Addressing Differences in Concentrations of Fipronil and Three Degradates Obtained by Two Different Laboratory Methods" Datasets for the Report Entitled: "A Method for Addressing Differences in Concentrations of Fipronil and Three Degradates Obtained by Two Different Laboratory Methods"
This report provides data input and computation results for a method developed by Crawford and Martin (2017) to address differences in concentrations of fipronil and three degradates obtained by two different laboratory methods. Data are arranged in 9 tables that include water-quality site information, laboratory recovery data, laboratory analyses results and measured water-sample...
Watershed Boundaries for the U.S. Geological Survey National Water Quality Network Watershed Boundaries for the U.S. Geological Survey National Water Quality Network
The National Water Quality Network (NWQN) for Rivers and Streams includes 113 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program (NWQP). The NWQN represents the consolidation of four historical national networks: the USGS National Water-Quality Assessment (NAWQA) Project, the USGS National Stream Quality Accounting Network...
Agricultural Pesticide Use Estimates for the USGS National Water Quality Network, 1992-2014 Agricultural Pesticide Use Estimates for the USGS National Water Quality Network, 1992-2014
The National Water Quality Network (NWQN) for Rivers and Streams includes 113 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program (NWQP). The NWQN represents the consolidation of four historical national networks: the USGS National Water-Quality Assessment (NAWQA) Project, the USGS National Stream Quality Accounting Network...
Filter Total Items: 39
Causal factors for pesticide trends in streams of the United States: Atrazine and deethylatrazine Causal factors for pesticide trends in streams of the United States: Atrazine and deethylatrazine
Pesticides are important for agriculture in the United States, and atrazine is one of the most widely used and widely detected pesticides in surface water. A better understanding of the mechanisms by which atrazine and its degradation product, deethylatrazine, increase and decrease in surface waters can help inform future decisions for water-quality improvement. This study considers...
Authors
Karen R. Ryberg, Wesley W. Stone, Nancy T. Baker
Influence of land use and region on glyphosate and aminomethylphosphonic acid in streams in the USA Influence of land use and region on glyphosate and aminomethylphosphonic acid in streams in the USA
Glyphosate is the most widely used herbicide in the United States for agricultural and non-agricultural weed control. Many studies demonstrate possible effects of glyphosate and its degradate AMPA on human and ecological health. Although glyphosate is thought to have limited mobility in soil, it is found year-round in many rivers and streams throughout the world in both agricultural and...
Authors
Laura Medalie, Nancy T. Baker, Megan E. Shoda, Wesley W. Stone, Michael T. Meyer, Edward G. Stets, Michaelah C. Wilson
Agriculture — A river runs through it — The connections between agriculture and water quality Agriculture — A river runs through it — The connections between agriculture and water quality
Sustaining the quality of the Nation’s water resources and the health of our diverse ecosystems depends on the availability of sound water-resources data and information to develop effective, science-based policies. Effective management of water resources also brings more certainty and efficiency to important economic sectors. Taken together, these actions lead to immediate and longterm...
Authors
Paul D. Capel, Kathleen A. McCarthy, Richard H. Coupe, Katia M. Grey, Sheila E. Amenumey, Nancy T. Baker, Richard L. Johnson
Contrasting nitrogen fate in watersheds using agricultural and water quality information Contrasting nitrogen fate in watersheds using agricultural and water quality information
Surplus nitrogen (N) estimates, principal component analysis (PCA), and end-member mixing analysis (EMMA) were used in a multisite comparison contrasting the fate of N in diverse agricultural watersheds. We applied PCA-EMMA in 10 watersheds located in Indiana, Iowa, Maryland, Nebraska, Mississippi, and Washington ranging in size from 5 to 1254 km2 with four nested watersheds. Watershed...
Authors
Hedeff I. Essaid, Nancy T. Baker, Kathleen A. McCarthy
Estimated agricultural pesticide use for Southeast Stream-Quality Assessment, 2014 Estimated agricultural pesticide use for Southeast Stream-Quality Assessment, 2014
Introduction One of the goals of the U.S. Geological Survey (USGS) Southeast Stream-Quality Assessment (SESQA) is to characterize contaminants at perennial-stream sites throughout the southern Piedmont and southern Appalachian Mountains. The evaluation of pesticide inputs from agricultural sources will aid in that characterization. Methods used for calculating county-level pesticide use...
Authors
Nancy T. Baker
Preliminary estimates of annual agricultural pesticide use for counties of the conterminous United States, 2013 Preliminary estimates of annual agricultural pesticide use for counties of the conterminous United States, 2013
Summary This report provides preliminary estimates of annual agricultural use of 387 pesticide compounds in counties of the conterminous United States in 2013, compiled by means of methods described in Thelin and Stone (2013) and Baker and Stone (2015). U.S. Department of Agriculture county-level data for harvested-crop acreage were used in conjunction with proprietary Crop Reporting...
Authors
Nancy T. Baker
Non-USGS Publications**
Baker, N.T., 1996, Use of a global positioning system and an acoustic doppler current profiler to map river and lake bathymetery: Published in Hallam, C.A., Salisbury, J.M., Lanfear, K.J., and Battaglin, W.A., eds., Proceedings of the American Water Resources Association Annual Symposium--Geographic Information Systems and Water Resources: Herndon, Virginia, American Water Resources Association, Technical Publication Series 96-3, p. 373-381.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Agricultural Pesticide Use Estimates for Selected Watersheds of the Surface Water Trends Project, 1992-2014, National Water Quality Program Agricultural Pesticide Use Estimates for Selected Watersheds of the Surface Water Trends Project, 1992-2014, National Water Quality Program
The U.S. Geological Survey (USGS) National Water Quality Program (NWQP) provides an understanding of water-quality conditions; whether conditions are getting better or worse over time; and how natural features and human activities affect those conditions. The Surface Water Trends (SWT) project of NWQP evaluates the directions, periods, and statistical significance of trends in water...
Agricultural Pesticide Use Estimates for the USGS National Water Quality Network, 1992-2014: Version 2 Agricultural Pesticide Use Estimates for the USGS National Water Quality Network, 1992-2014: Version 2
The National Water Quality Network (NWQN) for Rivers and Streams includes 113 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program (NWQP). The NWQN represents the consolidation of four historical national networks: the USGS National Water-Quality Assessment (NAWQA) Project, the USGS National Stream Quality Accounting Network...
Datasets for the Report Entitled: "A Method for Addressing Differences in Concentrations of Fipronil and Three Degradates Obtained by Two Different Laboratory Methods" Datasets for the Report Entitled: "A Method for Addressing Differences in Concentrations of Fipronil and Three Degradates Obtained by Two Different Laboratory Methods"
This report provides data input and computation results for a method developed by Crawford and Martin (2017) to address differences in concentrations of fipronil and three degradates obtained by two different laboratory methods. Data are arranged in 9 tables that include water-quality site information, laboratory recovery data, laboratory analyses results and measured water-sample...
Watershed Boundaries for the U.S. Geological Survey National Water Quality Network Watershed Boundaries for the U.S. Geological Survey National Water Quality Network
The National Water Quality Network (NWQN) for Rivers and Streams includes 113 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program (NWQP). The NWQN represents the consolidation of four historical national networks: the USGS National Water-Quality Assessment (NAWQA) Project, the USGS National Stream Quality Accounting Network...
Agricultural Pesticide Use Estimates for the USGS National Water Quality Network, 1992-2014 Agricultural Pesticide Use Estimates for the USGS National Water Quality Network, 1992-2014
The National Water Quality Network (NWQN) for Rivers and Streams includes 113 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program (NWQP). The NWQN represents the consolidation of four historical national networks: the USGS National Water-Quality Assessment (NAWQA) Project, the USGS National Stream Quality Accounting Network...
Filter Total Items: 39
Causal factors for pesticide trends in streams of the United States: Atrazine and deethylatrazine Causal factors for pesticide trends in streams of the United States: Atrazine and deethylatrazine
Pesticides are important for agriculture in the United States, and atrazine is one of the most widely used and widely detected pesticides in surface water. A better understanding of the mechanisms by which atrazine and its degradation product, deethylatrazine, increase and decrease in surface waters can help inform future decisions for water-quality improvement. This study considers...
Authors
Karen R. Ryberg, Wesley W. Stone, Nancy T. Baker
Influence of land use and region on glyphosate and aminomethylphosphonic acid in streams in the USA Influence of land use and region on glyphosate and aminomethylphosphonic acid in streams in the USA
Glyphosate is the most widely used herbicide in the United States for agricultural and non-agricultural weed control. Many studies demonstrate possible effects of glyphosate and its degradate AMPA on human and ecological health. Although glyphosate is thought to have limited mobility in soil, it is found year-round in many rivers and streams throughout the world in both agricultural and...
Authors
Laura Medalie, Nancy T. Baker, Megan E. Shoda, Wesley W. Stone, Michael T. Meyer, Edward G. Stets, Michaelah C. Wilson
Agriculture — A river runs through it — The connections between agriculture and water quality Agriculture — A river runs through it — The connections between agriculture and water quality
Sustaining the quality of the Nation’s water resources and the health of our diverse ecosystems depends on the availability of sound water-resources data and information to develop effective, science-based policies. Effective management of water resources also brings more certainty and efficiency to important economic sectors. Taken together, these actions lead to immediate and longterm...
Authors
Paul D. Capel, Kathleen A. McCarthy, Richard H. Coupe, Katia M. Grey, Sheila E. Amenumey, Nancy T. Baker, Richard L. Johnson
Contrasting nitrogen fate in watersheds using agricultural and water quality information Contrasting nitrogen fate in watersheds using agricultural and water quality information
Surplus nitrogen (N) estimates, principal component analysis (PCA), and end-member mixing analysis (EMMA) were used in a multisite comparison contrasting the fate of N in diverse agricultural watersheds. We applied PCA-EMMA in 10 watersheds located in Indiana, Iowa, Maryland, Nebraska, Mississippi, and Washington ranging in size from 5 to 1254 km2 with four nested watersheds. Watershed...
Authors
Hedeff I. Essaid, Nancy T. Baker, Kathleen A. McCarthy
Estimated agricultural pesticide use for Southeast Stream-Quality Assessment, 2014 Estimated agricultural pesticide use for Southeast Stream-Quality Assessment, 2014
Introduction One of the goals of the U.S. Geological Survey (USGS) Southeast Stream-Quality Assessment (SESQA) is to characterize contaminants at perennial-stream sites throughout the southern Piedmont and southern Appalachian Mountains. The evaluation of pesticide inputs from agricultural sources will aid in that characterization. Methods used for calculating county-level pesticide use...
Authors
Nancy T. Baker
Preliminary estimates of annual agricultural pesticide use for counties of the conterminous United States, 2013 Preliminary estimates of annual agricultural pesticide use for counties of the conterminous United States, 2013
Summary This report provides preliminary estimates of annual agricultural use of 387 pesticide compounds in counties of the conterminous United States in 2013, compiled by means of methods described in Thelin and Stone (2013) and Baker and Stone (2015). U.S. Department of Agriculture county-level data for harvested-crop acreage were used in conjunction with proprietary Crop Reporting...
Authors
Nancy T. Baker
Non-USGS Publications**
Baker, N.T., 1996, Use of a global positioning system and an acoustic doppler current profiler to map river and lake bathymetery: Published in Hallam, C.A., Salisbury, J.M., Lanfear, K.J., and Battaglin, W.A., eds., Proceedings of the American Water Resources Association Annual Symposium--Geographic Information Systems and Water Resources: Herndon, Virginia, American Water Resources Association, Technical Publication Series 96-3, p. 373-381.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.