An aquifer.
If its an underground reservoir for water, it could possibly be an Aquifer.
Permeable layers of soil that can be penetrated by water are called aquifers. Aquifers are underground layers of rock or sediment that are saturated with water and can supply wells and springs with water.
Bodies of water stored in underground spaces are called aquifers. Aquifers are natural underground reservoirs of water stored in permeable rock or sediment layers, providing a vital source of groundwater for wells and springs.
Water is stored underground in natural formations called aquifers, which are underground layers of permeable rock or sediment that can hold and transmit water. Aquifers can be found beneath the Earth's surface in various locations around the world.
These underground water storage areas are typically referred to as aquifers. Aquifers are permeable rock layers or sediments that can hold and transmit groundwater. They are important sources of water for drinking, irrigation, and industrial use.
If its an underground reservoir for water, it could possibly be an Aquifer.
Permeable layers of soil that can be penetrated by water are called aquifers. Aquifers are underground layers of rock or sediment that are saturated with water and can supply wells and springs with water.
Bodies of water stored in underground spaces are called aquifers. Aquifers are natural underground reservoirs of water stored in permeable rock or sediment layers, providing a vital source of groundwater for wells and springs.
Water is stored underground in natural formations called aquifers, which are underground layers of permeable rock or sediment that can hold and transmit water. Aquifers can be found beneath the Earth's surface in various locations around the world.
a water-bearing stratum of permeable rock, sand, or gravel
From Wikipedia:"An aquiferis a wet underground layer of water-bearing permeable rock or unconsolidated materials (gravel, sand, or silt) from which groundwater can be usefully extracted using a water well."
A plant root's membrane is permeable to water, but not to all dissolved substances. A permeable bandage allows air to reach the wound. Water enters permeable layers underground which can filter it.
The water-bearing layer of Earth is called the aquifer. Aquifers are underground layers of rock or sediment that can store and transmit water. They are important for supplying water to wells and springs.
These underground water storage areas are typically referred to as aquifers. Aquifers are permeable rock layers or sediments that can hold and transmit groundwater. They are important sources of water for drinking, irrigation, and industrial use.
Water in rocks (or other porous material) below the ground is called ground water.
An underground lake becomes an aquifer when it is a permeable layer of rock or sediment that holds and transmits groundwater. Aquifers can store and supply large quantities of water to wells and springs.
a water-bearing stratum of permeable rock, sand, or gravel