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

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.

Data and Resources

Field Value
accessLevel public
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identifier USGS:38dabaf9-3264-4b63-802d-2f63dabc8d20
metadata_type geospatial
modified 20201013
old-spatial -83.252177, 26.572896, -80.829948, 29.695895
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash a7f21848e8aa9892775bafb810b60a1a0a17c72d
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-83.252177, 26.572896], [-83.252177, 29.695895], [ -80.829948, 29.695895], [ -80.829948, 26.572896], [-83.252177, 26.572896]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • aquifer
  • attenuation-factor
  • ckan
  • environment
  • florida
  • geo
  • geology
  • geoscientificinformation
  • geoss
  • groundwater
  • health
  • hydrogeology
  • inlandwaters
  • national
  • north-america
  • pesticide
  • raster-dataset
  • southwest-florida-water-management-district
  • u-s-geological-survey
  • united-states
  • university-of-south-florida-st-petersburg
  • usgs
  • usgs-38dabaf9-3264-4b63-802d-2f63dabc8d20
  • water-quality
  • water-resources
isopen False
license_id notspecified
license_title License not specified
maintainer Steven H. Douglas
maintainer_email sdouglas@usgs.gov
metadata_created 2025-11-22T22:35:13.988153
metadata_modified 2025-11-22T22:35:13.988157
notes 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.
num_resources 2
num_tags 27
title Attenuation Factor model results for Upper Floridan aquifer vulnerability to Bromacil and Ethylene Dibromide