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Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in shallow, recently recharged ground water -- Input data set for orchards/vineyards (gwava-s_orvi)

Organization: Department of the Interior
Updated: 20201117 | Harvested: September 15, 2025 at 08:38 PM

This data set represents the percent of orchards/vineyards land cover in the conterminous United States. The data set was used as an input data layer for a national model to predict nitrate...

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Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in shallow, recently recharged ground water -- Input data set for water input (gwava-s_wtin)

Organization: Department of the Interior
Updated: 20201117 | Harvested: September 15, 2025 at 08:41 PM

This data set represents "water input," the ratio of the total area of irrigated land to precipitation, in square kilometers per centimeter, in the conterminous United States. The data set was...

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Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in shallow, recently recharged ground water -- Input data set for population density (gwava-s_popd)

Organization: Department of the Interior
Updated: 20201117 | Harvested: July 16, 2025 at 12:49 AM

This data set represents 1990 block group population density, in people per square kilometer, in the conterminous United States. The data set was used as an input data layer for a national model...

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Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in U.S. ground water used for drinking (simulation depth 50 meters) -- Input data set for drainageditch (gwava-dw_ddit)

Organization: Department of the Interior
Updated: 20201117 | Harvested: August 25, 2025 at 08:55 PM

This data set represents the area of National Resources Inventory surface drainage, field ditch conservation practice, in square kilometers, in the conterminous United States. The data set was...

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Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in shallow, recently recharged ground water -- Input data set for glacial till (gwava-s_gtil)

Organization: Department of the Interior
Updated: 20201117 | Harvested: July 15, 2025 at 11:39 PM

This data set represents the presence or absence of poorly sorted glacial till east of the Rocky Mountains in the conterminous United States. The data set was used as an input data layer for a...

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Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in U.S. ground water used for drinking (simulation depth 50 meters) -- Input data set for confined manure (gwava-dw_conf)

Organization: Department of the Interior
Updated: 20201117 | Harvested: July 15, 2025 at 11:39 PM

This data set represents the average annual nitrogen input from confined animal manure, 1992 and 1997, in kilograms per hectare, in the conterminous United States. The data set was used as an...

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Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in shallow, recently recharged ground water -- Input data set for wetlands (gwava-s_wetl)

Organization: Department of the Interior
Updated: 20201117 | Harvested: September 15, 2025 at 08:46 PM

This data set represents the percent of woody wetlands and emergent herbaceous wetlands land cover in the conterminous United States. The data set was used as an input data layer for a...

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Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in shallow, recently recharged ground water -- Input data set for carbonate rocks (gwava-s_crox)

Organization: Department of the Interior
Updated: 20201117 | Harvested: July 15, 2025 at 11:42 PM

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...

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xml

Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in U.S. ground water used for drinking (simulation depth 50 meters) -- Input data set for orchards/vineyards (gwava-dw_orvi)

Organization: Department of the Interior
Updated: 20201117 | Harvested: August 25, 2025 at 08:54 PM

This data set represents the percent of orchards/vineyards land cover in the conterminous United States. The data set was used as an input data layer for a national model to predict nitrate...

xml
xml

Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in shallow, recently recharged ground water -- Input data set for irrigation tailwater recovery (gwava-s_twre)

Organization: Department of the Interior
Updated: 20201117 | Harvested: August 25, 2025 at 08:37 PM

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...

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xml

Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in shallow, recently recharged ground water -- Input data set for farm fertilizer (gwava-s_ffer)

Organization: Department of the Interior
Updated: 20201117 | Harvested: July 15, 2025 at 11:34 PM

This data set represents the average annual nitrogen input from commercial fertilizer applied to agricultural lands, 1992-2001, in kilograms per hectare, in the conterminous United States. The...

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xml

Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in U.S. ground water used for drinking (simulation depth 50 meters) -- Input data set for water input (gwava-dw_wtin)

Organization: Department of the Interior
Updated: 20201117 | Harvested: September 15, 2025 at 08:39 PM

This data set represents "water input," the ratio of the total area of irrigated land to precipitation, in square kilometers per centimeter, in the conterminous United States. The data set was...

xml
xml

Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in shallow, recently recharged ground water -- Input data set for drainage ditch (gwava-s_ddit)

Organization: Department of the Interior
Updated: 20201117 | Harvested: August 25, 2025 at 08:38 PM

This data set represents the area of National Resources Inventory surface drainage, field ditch conservation practice, in square kilometers, in the conterminous United States. The data set was...

xml
xml

Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in U.S. ground water used for drinking (simulation depth 50 meters) -- Input data set for Dunne overland flow (gwava-dw_dun)

Organization: Department of the Interior
Updated: 20201117 | Harvested: August 25, 2025 at 08:35 PM

This data set represents saturation overland flow estimated by TOPMODEL, in percent of streamflow, in the conterminous United States. The data set was used as an input data layer for a...

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NIST Statistical Reference Datasets - SRD 140

Organization: National Institute of Standards and Technology
Updated: 2003-11-20 00:00:00 | Harvested: June 27, 2025 at 06:56 PM

The purpose of this project is to improve the accuracy of statistical software by providing reference datasets with certified computational results that enable the objective evaluation of...

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Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in U.S. ground water used for drinking (simulation depth 50 meters) -- Input data set for sandstone and carbonate rocks (gwava-dw_sscb)

Organization: Department of the Interior
Updated: 20201117 | Harvested: August 29, 2025 at 07:38 PM

This data set represents the presence or absence of sandstone and carbonate rock aquifers in the conterminous United States. The data set was used as an input data layer for a national model to...

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General Mission Analysis Tool Project

Organization: National Aeronautics and Space Administration
Updated: 2025-03-31 | Harvested: October 17, 2025 at 07:12 PM

OverviewGMAT is a feature rich system containing high fidelity space system models, optimization and targeting, built in...

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Start location file for the “Fluvial Particle” model used in generating particle tracking simulations of the dye release experiment at Searcys Bend near Columbia, Missouri, May 5, 2021

Organization: Department of the Interior
Updated: 20230811 | Harvested: July 16, 2025 at 08:12 AM

This dataset contains the particle starting locations for particle tracking simulations of the Searcys Bend dye release experiment using the “Fluvial Particle” particle tracking model. This file...

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Data and code from: Selection of the least drifting spray nozzles for pesticide application to protect insect pollinators

Organization: Department of Agriculture
Updated: 2025-06-09 | Harvested: July 14, 2025 at 04:20 PM

This dataset includes all raw data and statistical software code required to reproduce the analyses presented in the manuscript:Kannan, N. and Q. D. Read. 2025....

Optimal Alarm Systems

Organization: National Aeronautics and Space Administration
Updated: 2025-03-31 | Harvested: October 24, 2025 at 09:50 PM

An optimal alarm system is simply an optimal level-crossing predictor that can be designed to elicit the fewest false alarms for a fixed detection probability. It currently use Kalman filtering...

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