Aquitard

{
  "id": "MLC-T-ENV-002026",
  "term": "Aquitard",
  "field": "Environment",
  "definition": "1. A barrier to the flow of groundwater in an aquifer.\n\n2. Geological formation that may contain groundwater but is not capable of transmitting significant quantities of it under normal hydraulic gradients. May function as confining bed.\n\n3. Geologic formation/s of low hydraulic conductivity, typically saturated, but yielding a limited amount of water to wells. Also referred to as a confining unit.\n\n4. A geological formation that may contain ground water but is not capable of transmitting significant quantities of it under normal hydraulic gradients.\n\n5. A geologic formation that may contain groundwater but is not capable of transmitting significant quantities of groundwater under normal hydraulic gradients. In some situations aquitards may function as confining beds.\n\n6. Geologic formation/s of low hydraulic conductivity, typically saturated, but yielding a limited amount of water to wells.",
  "subject": "Land, waste and cleanup",
  "references": [
    "Superfund for Students and Teachers Glossary",
    "Terms of Environment",
    "Environmental Geophysics Glossary",
    "EPA Draft Plan to Study the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources Glossary at www.yosemite.gov/sab",
    "Office of Underground Storage Tanks Technical Terms; Glossary of Technical Terms: Office of Underground Storage Tanks"
  ],
  "url": "https://mlchart.com/terminology/environment/aquitard/"
}