Fossil water

{
  "id": "MLC-T-MET-010512",
  "term": "Fossil water",
  "field": "Meteorology and atmospheric science",
  "definition": "Groundwater that has remained sealed in an aquifer for an extended period, often thousands or millions of years. This water infiltrated the ground during a past geologic or climatic period when conditions were different from the present, and it is not being replenished under the current climate. Because it is a non-renewable resource on human timescales, its extraction for agriculture or drinking water leads to the depletion of the aquifer, such as the Ogallala Aquifer in the United States.",
  "see_also": [
    "connate water",
    "meteoric water"
  ],
  "url": "https://mlchart.com/terminology/meteorology/fossil-water/"
}