That's called an "aquifer" if it's naturally-occurring. But a "cistern" is a man-made with a waterproof lining. If it's a really big cistern, it's a "covered reservoir".
Aquifers are underground layers of rock or sediment that hold water. They can be made of various materials such as sand, gravel, or porous rock that allow water to pass through and be stored underground.
Groundwater.
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 porous spaces between rocks and sediments called aquifers. Aquifers can vary in size and depth, and can be found in various types of geological formations such as sandstone, limestone, and gravel. Groundwater from aquifers is an important source of drinking water for many communities around the world.
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.
Caverns can be under water and underground.
Deep underground, water can be contained in porous rock formations such as aquifers, which are layers of rock that can hold and transmit water. Another way water can be contained underground is in underground water reservoirs or natural underground chambers created by geologic processes like caves or caverns.
caverns
Underground water found in aquifers is called groundwater. Groundwater is stored in porous rock or sediment underground and is accessed through wells for drinking water and agricultural use.
groundwater
A body of water stored in an underground space is an aquifer.
Aquifers are underground layers of rock or sediment that hold water. They can be made of various materials such as sand, gravel, or porous rock that allow water to pass through and be stored underground.
A body of water stored in an underground space is an aquifer.
A body of water stored in an underground space is an aquifer.
No, most caverns form below the water table. Caverns are typically formed by the dissolution of underground limestone or other soluble rocks by water, and this process usually occurs below the water table where the rocks are saturated with water.
An aquifer
An aquifer transports groundwater, which is water stored underground in the spaces between rocks and sediment. Groundwater in an aquifer can flow very slowly through the porous material, supplying water to wells, springs, and surface water bodies.