Water Table

{
  "id": "MLC-T-ENV-030136",
  "term": "Water Table",
  "field": "Environment",
  "definition": "1. The boundary between the saturated and unsaturated zones. Generally, the level to which water will rise in a well (except artesian wells).\n\n2. Top of the zone of groundwater saturation.\n\n3. The water surface in an unconfined aquifer at which the fluid pressure in the pore spaces is at atmospheric pressure (the phreatic surface).\n\n4. Upper surface of a zone of saturation, where that surface is not formed by a confining unit; water pressure in the porous medium is equal to atmospheric pressure. The surface between the vadose zone and the groundwater; that surface of a body of unconfined groundwater at which the pressure is equal to that of the atmosphere.\n\n5. The level of ground water.\n\n6. The level or depth below the ground that is saturated with water.\n\n7. The level of ground water. The upper surface of the zone of saturation of groundwater above an impermeable layer of soil or rock (through which water cannot move) as in an unconfined aquifer. This level can be very near the surface of the ground or far below it.\n\n8. The upper level of the saturated zone. This level varies greatly in different parts of the country and also varies seasonally depending on the amount of rain and snowmelt.\n\n9. The upper limit of a geologic layer wholly saturated with water.\n\n10. The level of groundwater.\n\n11. The top of the water surface in the saturated part of an aquifer.\n\n12. Upper limit of a saturated zone in the soil.\n\n13. The surface of underground, gravity-controlled water. The level of ground water. The boundary in the ground between where the ground is saturated with water (zone of saturation) and where the ground is filled with water and air (zone of aeration). The upper surface of the zone of saturation of ground water above an impermeable layer of soil or rock (through which water cannot move) as in an unconfined aquifer. This level can be very near the surface of the ground or far below it.\n\n14. the level below the earth's surface at which the ground becomes saturated with water. The water table is set where hydrostatic pressure equals atmospheric pressure; the surface between phreatic water which completely fills voids in the rock and ground air which partially fills higher voids.\n\n15. The water surface in an unconfined aquifer at which the fluid pressure in the pore spaces is at atmospheric pressure.",
  "subject": "Water",
  "references": [
    "Environmental Issues Terms & Acronyms; Pesticides Glossary",
    "Nearshore Terrestrial Ecosystems Glossary",
    "Underground Storage Tank Sites Guide Glossary",
    "Leaking Underground Storage Tanks Sites Glossary",
    "RCRA Glossary of Terms",
    "Aquatic Biodiversity Glossary",
    "Drinking Water Technical & Legal Terms",
    "Private Wells Glossary",
    "Superfund for Students and Teachers Glossary; Abandoned Mine Lands (AML) Glossary",
    "Terms of Environment",
    "USGS Water Science Glossary of Terms",
    "USDA Forest Service Glossary of Terms Used in Timber Harvesting and Forest Engineering",
    "DOI Bureau of Reclamation Managing Water in the West Glossary",
    "NOAA Coral Reef Glossary",
    "Office of Underground Storage Tanks Technical Terms; Glossary of Technical Terms: Office of Underground Storage Tanks"
  ],
  "url": "https://mlchart.com/terminology/environment/water-table/"
}