Attenuation Factor model results for Upper Floridan aquifer vulnerability to Bromacil and Ethylene Dibromide

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Steven H. Douglas
Publication_Date: 20170828
Title:
Attenuation Factor model results for Upper Floridan aquifer vulnerability to Bromacil and Ethylene Dibromide
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: U.S. Geological Survey Data Release
Issue_Identification: doi:10.5066/F7S46QTV
Publication_Information:
Publication_Place: St. Petersburg, FL
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/F7S46QTV
Description:
Abstract:
This dataset includes Attenuation Factor (AF; Rao and others, 1985) model results for Upper Floridan aquifer vulnerability to Bromacil and 1,2-Dibromoethane or Ethylene Dibromide (EDB). The AF value serves as an index for assessing the transport of pesticide mass from the vadose zone. The AF model setup requires the input of raster soil bulk density, soil organic carbon content, soil field capacity, soil air filled porosity, recharge to the aquifer, depth to groundwater, the pesticide sorption coefficient, pesticide Henry's Law Constant, and pesticide half-life. These variables were entered into the AF equation using the raster calculator tool in ArcGIS. The resulting AF values are dimensionless and range between 0 and 1. A value of 1 indicates that all of the pesticides in the vadose zone will leach into the groundwater; conversely, a value of 0 suggests that no pesticides will leach into the groundwater.
Purpose:
This dataset was generated from the Attenuation Factor model to test the model's ability to indicate groundwater vulnerability to pesticides in the Southwest Florida Water Management District (SWFWMD).
Supplemental_Information:
A downloadable version of the final dataset is provided in GeoTIFF file format with 10-meter resolution.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2017
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -83.252177
East_Bounding_Coordinate: -80.829948
North_Bounding_Coordinate: 29.695895
South_Bounding_Coordinate: 26.572896
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:38dabaf9-3264-4b63-802d-2f63dabc8d20
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Attenuation Factor
Theme_Keyword: pesticide
Theme_Keyword: aquifer
Theme_Keyword: raster dataset
Theme_Keyword: Florida
Theme_Keyword: Southwest Florida Water Management District
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: University of South Florida St. Petersburg
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: inlandWaters
Theme_Keyword: environment
Theme_Keyword: health
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geology
Theme_Keyword: groundwater
Theme_Keyword: water quality
Theme_Keyword: water resources
Theme_Keyword: hydrogeology
Access_Constraints: None
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Cherokee Nation Technologies contracted to the U.S. Geological Survey
Contact_Person: Steven H. Douglas
Contact_Address:
Address_Type: physical and mailing address
Address: 600 4th St S
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Contact_Voice_Telephone: 727-502-8134
Contact_Electronic_Mail_Address: sdouglas@usgs.gov
Data_Set_Credit:
U.S. Geological Survey and University of South Florida St. Petersburg
Native_Data_Set_Environment:
Microsoft Windows 7 Version 6.1 (Build 7601) Service pack 1; Esri ArcGIS 10.2
Cross_Reference:
Citation_Information:
Originator: Rao, P.S.C., Hornsby, A.G., and Jesup, R.E.
Publication_Date: 1985
Title:
Indices for ranking the potential for pesticide contamination of groundwater
Edition: 44, 1-8
Publication_Information:
Publication_Place: Florida
Publisher: Proceedings of the Soil and Crop Science Society of Florida
Cross_Reference:
Citation_Information:
Originator: Douglas, S., Dixon, B., and Griffin, D.
Publication_Date: Unknown
Title:
Assessing intrinsic and specific vulnerability models ability to indicate groundwater vulnerability to groups of similar pesticides: a comparative study
Publication_Information:
Publication_Place: Philadelphia, PA
Publisher: Physical Geography
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted.
Logical_Consistency_Report:
Raster values were checked for consistency with expected values.
Completeness_Report:
Data-set is considered complete for the information presented, as described in the abstract.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: No formal horizontal positional accuracy tests were conducted.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
A formal accuracy assessment of the vertical positional information in the data-set has either not been conducted, or is not applicable.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Southwest Florida Water Management District
Publication_Date: 20090206
Title: District Polygon Boundary
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Brooksville, FL
Publisher: Southwest Florida Water Management District
Online_Linkage:
http://data-swfwmd.opendata.arcgis.com/datasets/c785f7ae47d94a4ab0a41c0e9c50dcc0_13
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20090206
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: DISTRICT
Source_Contribution:
Water management district boundaries dataset was used as the study area extent that the other layers were clipped to.
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 20111117
Title:
Potentiometric Surface of the Upper Floridan Aquifer in Florida and in Parts of Georgia, South Carolina, and Alabama, May – June 2010
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Orlando, FL
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/sim/3182/data/Potmap_wells_May2010.zip
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 201005
Ending_Date: 201006
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: SIM3182
Source_Contribution:
This vector point file of potentiometric surface was interpolated to calculate the depth to groundwater variable in the Attenuation Factor model equation.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Florida Geographic Data Library
Publication_Date: 201301
Title:
Florida Digital Elevation Model (DEM) Mosaic - 5-Meter Cell Size - Elevation Units Meters (FGDC)
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Gainesville, FL
Publisher: University of Florida GeoPlan Center
Online_Linkage: ftp://ftp.fgdl.org/pub/state/flidar_mosaic_ft.zip
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 201301
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: FLIDAR_MOSAIC_M
Source_Contribution:
The 5-meter DEM was used as the input surface elevation that was used to create the depth to groundwater variable.
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Mapping and GIS Section, Southwest Florida Water Management District
Publication_Date: 2002
Title: Aquifer Recharge/Discharge data from USGS 2002 Model
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: 2379 Broad Street, Brooksville, FL 34604-6899
Publisher: Southwest Florida Water Management District
Online_Linkage:
http://ftp.swfwmd.state.fl.us/pub/gisdata/physical_sparse/recharge2002.exe
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 199308
Ending_Date: 199407
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: SWFWMD
Source_Contribution:
Aquifer recharge/discharge was used as the recharge variable in the Attenuation Factor model equation.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Mackay, D., Shiu, W.Y., Ma, K.C., and Lee, S.C.
Publication_Date: 20060314
Title:
Handbook of Physical-Chemical Properties and Environmental Fate for Organic Chemicals Volume II, Second Edition
Type_of_Source_Media: print
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2006
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Pesticide Half-Life (t1/2)
Source_Contribution:
The half-life of EDB in groundwater was used as the half-life variable in the Attenuation Factor model equation.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Staudinger, J., and Roberts, P.V.
Publication_Date: 20010626
Title:
A critical compilation of Henry's law constant temperature dependence relations for organic compounds in dilute aqueous solutions.
Edition: 44(4)
Online_Linkage: https://doi.org/10.1016/S0045-6535(00)00505-1
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1953
Ending_Date: 1999
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Henry's Constant (Kh)
Source_Contribution:
The EDB Henry's law constant was used as the Henry's law constant variable in the Attenuation Factor model equation.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Delle Site, A.
Publication_Date: 2001
Title:
Factors affecting sorption of organic compounds in natural sorbent/water systems and sorption coefficients for selected pollutants. A review.
Edition: 30(1)
Type_of_Source_Media: print
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1964
Ending_Date: 1992
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Sorption Coefficient (Koc)
Source_Contribution:
The EDB sorption coefficient was used as the sorption coefficient of pesticides on organic matter variable in the Attenuation Factor model equation.
Source_Information:
Source_Citation:
Citation_Information:
Originator:
U.S. Department of Agriculture, Natural Resources Conservation Service
Publication_Date: 2015
Title:
USDA-NRCS Soil Survey Geographic (SSURGO 2.2): Bulk Density, Organic Carbon Content, Field Capacity, and Porosity
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Fort Worth, TX
Publisher: USDA/NRCS - National Geospatial Center of Excellence
Online_Linkage:
https://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/geo/?cid=nrcs142p2_053627
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2015
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: SSURGO
Source_Contribution:
Bulk density (BD), Organic Carbon Content (OC), Field Capacity (FC), and Porosity (AC) were used as variables in the Attenuation Factor model equation
Process_Step:
Process_Description:
Tabular and map Soil Survey Geographic Database SSURGO data for Florida were downloaded through the U.S. Department of Agriculture (USDA) Geospatial Data Gateway. Descriptions for the SSURGO classes are available at the Soil Survey website http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ref/?cid=nrcs142p2_054253. SSURGO metadata is available at: http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/home/?cid=nrcs142p2_053631. The polygon shapefiles were joined to the tabular files within the SSURGO file geodatabase. The first join to be made uses the “mukey” field as the common identifier to join the cokey field from the “component” table. The second join to be made uses the cokey field as the common identifier to join the om_r (organic carbon content), dbthirdbar_r (bulk density), awc_r (field capacity), and wsatiated_r (porosity) field from the “CHorizon” table. The Florida shapefiles were clipped to the SWFWMD boundaries, using the clip tool in ArcGIS and the polygon shapefile, DISTRICT, as the boundary. The variables are expressed as a percent or fraction of the total volume. If the original data from SSURGO is expressed as floating-point decimal values between 0 and 1 then they were converted to values between 1 and 100 by adding a new field to the raster in the attribute table and using the field calculator to multiply the original values by 100. Bulk density was converted from g/cm3 to kg/m3 using the field calculator and by multiplying the bulk density values by 1000. The final polygon shapefile was converted to 10 meter raster GeoTiffs using the Polygon to Raster tool and selecting the new field with values 1 to 100 as the new raster values.
Process_Date: 2015
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Steven H. Douglas
Contact_Organization:
Cherokee Nation Technologies contracted to the U.S. Geological Survey
Contact_Address:
Address_Type: Physical and mailing
Address: 600 4th St S
City: St Petersburg
State_or_Province: FL
Postal_Code: 33701
Contact_Voice_Telephone: 727-502-8134
Contact_Electronic_Mail_Address: sdouglas@usgs.gov
Process_Step:
Process_Description:
Depth to groundwater was created by clipping the USGS potentiometric well points shapefile (Kinnaman and Dixon, 2011) to the SWFWMD study area extent. The potentiometric surface was calculated by interpolating the points with the Inverse Distance Weighted tool in ArcGIS and using the default settings. Finally, depth to groundwater was created by subtracting the potentiometric surface from the FLIDAR_MOSAIC_M DEM value using the raster calculator tool.
Process_Date: 2015
Process_Step:
Process_Description:
Henry's law constant, half-life, and sorption coefficient raster layers were created by making three copies of the bulk density raster from the SSURGO data-set. Using the ArcGIS field calculator the values for all cells in the study area were changed to the corresponding variable value to create the constant raster variable.
Process_Date: 2015
Process_Step:
Process_Description:
The recharge polygon shapefile, SWFWMD, was converted to a 10-meter raster GeoTiff, using the Polygon to Raster tool in ArcGIS.
Process_Date: 2015
Process_Step:
Process_Description:
The Attenuation Factor model equation described by Rao and others (1985), was constructed using the Raster Calculator tool in ArcMap. The resulting AF values range between 0 and 1 and were divided into 5 classes, using the reclassify tool in ArcGIS, based on the standard deviation: very low (less than 0.3), low (between 0.3 and 0.522), medium (between 0.522 and 0.742), high (between 0.742 and 0.962), and very high (greater than or equal to 0.962).
Process_Date: 2015
Process_Step:
Process_Description:
Added keywords section with USGS persistent identifier as theme keyword.
Process_Date: 20201013
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 19397
Column_Count: 32005
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: USA_Contiguous_Albers_Equal_Area_Conic_USGS_version
Albers_Conical_Equal_Area:
Standard_Parallel: 29.5
Standard_Parallel: 45.5
Longitude_of_Central_Meridian: -96.0
Latitude_of_Projection_Origin: 23.0
False_Easting: 0.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 10.0
Ordinate_Resolution: 10.0
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: af_model.tif
Entity_Type_Definition:
GeoTIFF file that includes attenuation factor model results for the Upper Floridan aquifer vulnerability to Bromacil and 1,2-Dibromoethane or Ethylene Dibromide (EDB).
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: OID
Attribute_Definition:
Internal feature number. Sequential unique whole numbers that are automatically generated.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 4
Attribute:
Attribute_Label: Value
Attribute_Definition:
AF reclassified vulnerability class values. 1 = Very Low Vulnerability, 2 = Low, 3 = Medium, 4 = High, 5 = Very High.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Very Low Vulnerability
Enumerated_Domain_Value_Definition_Source: USGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition: Low Vulnerability
Enumerated_Domain_Value_Definition_Source: USGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition: Medium Vulnerability
Enumerated_Domain_Value_Definition_Source: USGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 4
Enumerated_Domain_Value_Definition: High Vulnerability
Enumerated_Domain_Value_Definition_Source: USGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 5
Enumerated_Domain_Value_Definition: Very High Vulnerability
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: Count
Attribute_Definition: Number of cells
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 25309776
Range_Domain_Maximum: 73913452
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Cherokee Nation Technologies contracted to the U.S. Geological Survey
Contact_Person: Steven Douglas
Contact_Address:
Address_Type: physical and mailing
Address: 600 4th St S
City: St Petersburg
State_or_Province: FL
Postal_Code: 33701
Contact_Voice_Telephone: 727-502-8134
Contact_Electronic_Mail_Address: sdouglas@usgs.gov
Distribution_Liability:
Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. The data have been approved for release and publication by the U.S. Geological Survey (USGS). Although the data have been subjected to rigorous review and are substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, the data are released on the condition that neither the USGS nor the U.S. Government may be held liable for any damages resulting from authorized or unauthorized use. Although the data have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described and/or contained herein. Users of the data are advised to read all metadata and associated documentation thoroughly to understand appropriate use and data limitations.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: GeoTIFF
Format_Version_Date: 2017
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://coastal.er.usgs.gov/data-release/doi-F7S46QTV/data/AF_model.zip
Fees: None.
Metadata_Reference_Information:
Metadata_Date: 20201013
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Cherokee Nation Technologies contracted to the U.S. Geological Survey
Contact_Person: Steven H. Douglas
Contact_Address:
Address_Type: physical and mailing
Address: 600 4th St S
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Contact_Voice_Telephone: 727-502-8134
Contact_Electronic_Mail_Address: sdouglas@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
This page is <https://cmgds.marine.usgs.gov/catalog/spcmsc/AF_metadata.html>
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