Underground water：Groundwater
Groundwater
Aquifer
https://en.wikipedia.org
An aquifer is an underground layer of water-bearing, permeable rock, rock fractures, or unconsolidated materials (gravel, sand, or silt).
Aquifers and Groundwater
https://www.usgs.gov
A huge amount of water exists in the ground below your feet, and people all over the world make great use of it.
Groundwater
https://en.wikipedia.org
Groundwater is fresh water located in the subsurface pore space of soil and rocks. It is also water that is flowing within aquifers below the water table.
Groundwater
https://www.britannica.com
groundwater, water that occurs below the surface of Earth, where it occupies all or part of the void spaces in soils or geologic strata.
How Ground Water Occurs
https://pubs.usgs.gov
It is difficult to visualize water underground. Some people believe that ground water collects in underground lakes or flows in underground rivers.
What is Groundwater?
https://groundwater.org
Groundwater is the water found underground in the cracks and spaces in soil, sand and rock. It is stored in and moves slowly through geologic formations of ...
What is Groundwater?
https://www.usgs.gov
Groundwater is a part of the natural water cycle (check out our interactive water cycle diagram). Some part of the precipitation that lands on the ground ...