Unconfined Aquifer

{
  "id": "MLC-T-ENV-029017",
  "term": "Unconfined Aquifer",
  "field": "Environment",
  "definition": "1. An aquifer in which there are no confining beds between the capillary fringe and land surface, and where the top of the saturated zone (the water table) is at atmospheric pressure.\n\n2. An aquifer containing water that is not under pressure; the water level in a well is the same as the water table outside the well.\n\n3. An aquifer not bound by confining material.\n\n4. An aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.",
  "subject": "Land, waste and cleanup",
  "references": [
    "Underground Storage Tank Sites Guide Glossary; Office of Underground Storage Tanks Technical Terms; Glossary of Technical Terms: Office of Underground Storage Tanks",
    "RCRA Glossary of Terms; Drinking Water Technical & Legal Terms; Terms of Environment",
    "Superfund for Students and Teachers Glossary",
    "Original source: https://water.usgs.gov/edu/dictionary.html#S; USGS Water Science Glossary of Terms"
  ],
  "url": "https://mlchart.com/terminology/environment/unconfined-aquifer/"
}