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)

Dataset Identification:

Resource Abstract:
This data set represents the average annual nitrogen input fromconfined animal manure, 1992 and 1997, in kilograms per hectare,in the conterminous United States.The data set was used as an input data layer for a nationalmodel to predict nitrate concentration in ground water used fordrinking.Nolan and Hitt (2006) developed two national models to predictcontamination of ground water by nonpoint sources ofnitrate. The nonlinear approach to national-scale Ground-WAterVulnerability Assessment (GWAVA) uses components representingnitrogen (N) sources, transport, and attenuation.One model (GWAVA-S) predicts nitrate contamination of shallow(typically less than 5 meters deep), recently recharged groundwater, which may or may not be used for drinking. The other(GWAVA-DW) predicts ambient nitrate concentration in deepersupplies used for drinking.This data set is one of 14 data sets (1 output data set and 13input data sets) associated with the GWAVA-DW model. Full detailsof the model development are in Nolan and Hitt (2006).For inputs to the model, spatial attributes representing 13nitrogen loading and transport and attenuation factors werecompiled as raster data sets (1-km by 1-km grid cell size) forthe conterminous United States (see table 1).>Table 1.-- Parameters of nonlinear regression model for> nitrate in ground water used for drinking (GWAVA-DW)> and corresponding input spatial data sets.> [kg, kilograms; km2, square kilometers.]>>Nitrogen Source Factors Data Set Name> 1 farm fertilizer (kg/hectare) gwava-dw_ffer> 2 confined manure (kg/hectare) gwava-dw_conf> 3 orchards/vineyards (percent) gwava-dw_orvi> 4 population density (people/km2) gwava-dw_popd>>Transport to Aquifer Factors> 5 water input (km2/cm) gwava-dw_wtin> 6 glacial till (yes/no) gwava-dw_gtil> 7 semiconsolidated sand aquifers gwava-dw_semc> (yes/no)> 8 sandstone and carbonate rocks gwava-dw_sscb> (yes/no)> 9 drainage ditch (km2) gwava-dw_ddit> 10 Hortonian overland flow gwava-dw_hor> (percent of streamflow)>>Attenuation Factors> 11 fresh surface water withdrawal gwava-dw_swus> for irrigation (megaliters/day)> 12 irrigation tailwater recovery (km2) gwava-dw_twre> 13 Dunne overland flow gwava-dw_dun> (percent of streamflow)> 14 well depth (meters) -"Farm fertilizer" is the average annual nitrogen input fromcommercial fertilizer applied to agricultural lands, 1992-2001, inkilograms per hectare."Confined manure" is the average annual nitrogen input fromconfined animal manure, 1992 and 1997, in kilograms perhectare."Orchards/vineyards" is the percent of orchards/vineyards landcover classification."Population density" is 1990 block group population density, inpeople per square kilometer."Water input" is the ratio of the total area of irrigated landto precipitation, in square kilometers per centimeter."Glacial till" is the presence or absence of poorly sortedglacial till east of the Rocky Mountains."Semiconsolidated sand aquifers" is the presence or absence ofsemiconsolidated sand aquifers."Sandstone and carbonate rocks" is the presence or absence ofsandstone and carbonate rock aquifers."Drainage ditch" is the area of National Resources Inventory surfacedrainage, field ditch conservation practice, in square kilometers."Hortonian overland flow" is infiltration excess overland flowestimated by TOPMODEL, in percent of streamflow."Fresh surface water withdrawal for irrigation" is the amount offresh surface water withdrawal for irrigation, in megaliters per day."Irrigation tailwater recovery" is the area of NationalResources Inventory irrigation system, tailwater recoveryconservation practice, in square kilometers."Dunne overland flow" is saturation overland flow estimated byTOPMODEL, in percent of streamflow."Well depth" is the depth of the well, in meters. Well depthwas not compiled as a spatial data set. Well depth equals 50meters for the model simulation being presented.Reference cited:Nolan, B.T. and Hitt, K.J., 2006, Vulnerability of shallowground water and drinking-water wells to nitrate in the UnitedStates: Environmental Science and Technology, vol. 40, no. 24,pages 7834-7840.
Citation
Title 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)
Publication Date  Date   2007
Time Period  Date   1991
Time Period  Date   2003
File Modification Date  Date   2013-06-11 09:25:56
Topic Category:  geoscientificInformation
Keywords:
Catalog Keywords
landingPage
download
thesaurus name >
Title https://www.sciencebase.gov/vocab/category/item/bedi/accessCapabilities
revision  Date   2015-07-19
Theme Keywords
Ground water
Ground water contamination
Ground water pollution
Ground water susceptibility
Nutrients
Nitrate
National Water-Quality Assessment Program
NAWQA
Nonlinear model
Nitrate concentration
Drinking water
inlandWaters
Confined animal manure
National Land Cover Data
thesaurus name >
Title None
revision  Date   2015-07-19
Place Keywords
Conterminous United States
thesaurus name >
Title None
revision  Date   2015-07-19
Theme keywords (theme):
Well
Drainage Ditch
Ditch
thesaurus name >
Title Feature > Hydrologic Feature
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
Theme keywords (theme):
Precipitation
thesaurus name >
Title Process > Atmospheric Process
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
Theme keywords (theme):
Attenuation
Density
Flow
Streamflow
thesaurus name >
Title Property > Measure
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
Theme keywords (theme):
Drinking Water
Ground Water
Animal Manure
Surface Water
thesaurus name >
Title Material > Environmental Material
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
Theme keywords (theme):
Nitrate
Factor A
Nitrogen
Carbonate
thesaurus name >
Title Material > Chemical
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
Theme keywords (theme):
Spatial Datum
thesaurus name >
Title Resource Type > Spatial Data
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
Theme keywords (theme):
Cell
Nutrient
thesaurus name >
Title Material > Biological Material
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
Theme keywords (theme):
Mountain
thesaurus name >
Title Feature > Physiographic Feature
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
Theme keywords (theme):
Land
Cover
thesaurus name >
Title Realm > Geosphere
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
Theme keywords (theme):
Loading
Averaging
thesaurus name >
Title Method > Information Processing
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
Theme keywords (theme):
Sand
Sandstone
thesaurus name >
Title Material > Rock Material
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
Theme keywords (theme):
Water Quality
thesaurus name >
Title Property > Property (Other)
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
Theme keywords (theme):
Water Pollution
thesaurus name >
Title Activity > Human Impact
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
Theme keywords (theme):
Animal
thesaurus name >
Title Science Domain > Biology
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
Theme keywords (theme):
Data Set
thesaurus name >
Title Resource Type > Data Set
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
Theme keywords (theme):
Farm
Aquifer
thesaurus name >
Title Feature > Environmental Feature
publication  Date   2017-01-16
other Citation Details  Cinergi keyword enhanced at Mon Jan 16 13:03:07 UTC 2017
purpose:
This particular data layer was created to help characterizenitrogen sources at a national level for input to a nationalmodel to predict nitrate concentration in ground water used fordrinking.Nitrate is considered to be the most widespread contaminant inground water. High nitrate concentration in ground water is aconcern for human health, and protecting drinking water sourcesis a national priority. The U.S. Geological Survey's NationalWater-Quality Assessment (NAWQA) Program monitors the occurrenceand distribution of nitrate and other contaminants in groundwater and streams. However, because monitoring everywhere forthe occurrence and distribution of nitrate in ground water isimpractical, national water-quality models are used to addressdata gaps. The goal of the current study was to predict groundwater vulnerability to nitrate at the national scale, tocomplement measured data.
Resource language:  eng
Resource extent
Geographic Extent
Geographic Bounding Box
westBoundLongitude  -128.30785909
eastBoundLongitude  -65.14338696
northBoundLatitude  51.857984
southBoundLatitude  22.73659812
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Resource distribution information

Distributor
distributor contact - distributor
organisation Name  U.S. Geological Survey
position Name Ask USGS -- Water Webserver Team
Contact information
Telephone
Voice 1-888-275-8747 (1-888-ASK-USGS)
Address
Digital Transfer Options
Linkage for online resource
name ScienceBase Item Summary Page
URL: https://www.sciencebase.gov/catalog/item/535ea29de4b08e65d60fa7a9
protocol WWW:LINK-1.0-http--link
link function information
Description Link to the ScienceBase Item Summary page for the item described by this metadata record
target application profile  Web Browser
Linkage for online resource
name ArcInfo Workstation GRID
URL: http://water.usgs.gov/GIS/dsdl/gwava-dw/arctar/gwava-dw_conf.tgz
protocol WWW:LINK-1.0-http--link
link function information
Description ScienceBase WebLink
target application profile  Web Browser
Linkage for online resource
name ASCII file
URL: http://water.usgs.gov/GIS/dsdl/gwava-dw/gascii/gwava-dw_conf.txt.gz
protocol WWW:LINK-1.0-http--link
link function information
Description ScienceBase WebLink
target application profile  Web Browser
Linkage for online resource
name Index to all files related to the GWAVA-DW model to facilitate downloadingall the GIS data sets
URL: http://water.usgs.gov/GIS/dsdl/gwava-dw/index.html
protocol WWW:LINK-1.0-http--link
link function information
Description ScienceBase WebLink
target application profile  Web Browser
Linkage for online resource
name Download Attached Files
URL: https://www.sciencebase.gov/catalog/file/get/535ea29de4b08e65d60fa7a9
protocol WWW:LINK-1.0-http--link
link function information
Description Download Link
target application profile  Web Browser

Metadata data stamp:  2015-01-18T19:33:30Z
Metadata Constraints
Constraints
Use limitation statement:
none
Metadata contact - pointOfContact
organisation Name  Kerri Hitt.
position Name Hydrologist
Contact information
Telephone
Voice 703 648-6854
Address
electronic Mail Address khitt@usgs.gov
Metadata contact - metadataContact
organisation Name  U.S. Geological Survey
position Name Ask USGS -- Water Webserver Team
Contact information
Telephone
Voice 1-888-275-8747 (1-888-ASK-USGS)
Address
Metadata contact - originator
organisation Name  Hitt, K.J.
Contact information
Metadata scope code  dataset
Metadata language  eng USA
Metadata character set encoding:   utf8
Metadata standard for this record:  ISO19115
standard version:  1.0
Metadata record identifier:  535ea29de4b08e65d60fa7a9
URI for dataset described: > https://www.sciencebase.gov/catalog/item/535ea29de4b08e65d60fa7a9

Metadata record format is ISO19139-2 XML (MI_Metadata)