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These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This data set represents soil surface slope, in percent times 1000, in the conterminous United States. The data set was used as an input data layer for a national model to predict nitrate concentration in shallow ground water. Nolan and Hitt (2006) developed two national models to predict contamination of ground water by nonpoint sources of nitrate. The nonlinear approach to national-scale Ground-WAter Vulnerability Assessment (GWAVA)...
Tags: Conterminous United States,
Ground water,
Ground water contamination,
Ground water pollution,
Ground water susceptibility, All tags...
NAWQA,
NSDI,
National Water-Quality Assessment Program,
Nitrate,
Nitrate concentration,
Nonlinear model,
Nutrients,
Slope,
USGS Science Data Catalog (SDC),
environment,
geoscientificInformation,
inlandWaters,
inlandWaters, Fewer tags
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These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This data set represents the presence or absence of Valley and Ridge carbonate rocks in the conterminous United States. The data set was used as an input data layer for a national model to predict nitrate concentration in shallow ground water. Nolan and Hitt (2006) developed two national models to predict contamination of ground water by nonpoint sources of nitrate. The nonlinear approach to national-scale Ground-WAter Vulnerability...
Tags: Carbonate rocks,
Conterminous United States,
Ground water,
Ground water contamination,
Ground water pollution, All tags...
Ground water susceptibility,
NAWQA,
NSDI,
National Water-Quality Assessment Program,
Nitrate,
Nitrate concentration,
Nonlinear model,
Nutrients,
USGS Science Data Catalog (SDC),
environment,
geoscientificInformation,
inlandWaters,
inlandWaters, Fewer tags
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These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This data set represents predicted nitrate concentration in shallow, recently recharged ground water, in milligrams per liter, in the conterminous United States, and was generated by a national nonlinear regression model based on 16 input parameters. Nolan and Hitt (2006) developed two national models to predict contamination of ground water by nonpoint sources of nitrate. The nonlinear approach to national-scale Ground-WAter Vulnerability...
Tags: Conterminous United States,
Ground water,
Ground water contamination,
Ground water pollution,
Ground water susceptibility, All tags...
NAWQA,
NSDI,
National Water-Quality Assessment Program,
Nitrate,
Nitrate concentration,
Nonlinear model,
Nutrients,
USGS Science Data Catalog (SDC),
environment,
geoscientificInformation,
inlandWaters,
inlandWaters, Fewer tags
|
These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This data set represents the area of National Resources Inventory irrigation system, tailwater recovery conservation practice, in square kilometers, in the conterminous United States. The data set was used as an input data layer for a national model to predict nitrate concentration in shallow ground water. Nolan and Hitt (2006) developed two national models to predict contamination of ground water by nonpoint sources of nitrate....
Tags: Conterminous United States,
Ground water,
Ground water contamination,
Ground water pollution,
Ground water susceptibility, All tags...
Irrigation tailwater recovery,
NAWQA,
NRI,
NSDI,
National Land Cover Data,
National Resources Inventory,
National Water-Quality Assessment Program,
Nitrate,
Nitrate concentration,
Nonlinear model,
Nutrients,
USGS Science Data Catalog (SDC),
environment,
geoscientificInformation,
inlandWaters,
inlandWaters, Fewer tags
|
These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This data set represents the amount of fresh surface water withdrawal for irrigation, in megaliters per day, in the conterminous United States. The data set was used as an input data layer for a national model to predict nitrate concentration in shallow ground water. Nolan and Hitt (2006) developed two national models to predict contamination of ground water by nonpoint sources of nitrate. The nonlinear approach to national-scale...
Tags: Conterminous United States,
Fresh surface water withdrawal,
Ground water,
Ground water contamination,
Ground water pollution, All tags...
Ground water susceptibility,
Irrigation water use,
NAWQA,
NSDI,
National Land Cover Data,
National Water-Quality Assessment Program,
Nitrate,
Nitrate concentration,
Nonlinear model,
Nutrients,
USGS Science Data Catalog (SDC),
environment,
geoscientificInformation,
inlandWaters,
inlandWaters, Fewer tags
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