Definition

Noun: 1. A geological formation that contains and yields groundwater: An aquifer is an underground layer of water-bearing permeable rock, rock fractures, or unconsolidated materials (like gravel, sand, or silt) from which groundwater can be extracted using a well or spring.

Usage

The word "aquifer" is a technical term used primarily in geology, hydrology, environmental science, and water resource management. It refers to the natural underground reservoir that supplies water to wells and springs.

Examples

• Noun:
  • The city's drinking water is pumped from a deep aquifer.
  • Overuse of water for agriculture is depleting the local aquifer.
  • The porous sandstone acts as an excellent aquifer.

Advanced Usage

• Confined aquifer: An aquifer that is bounded above and below by layers of impermeable rock or clay, which pressurizes the water within it.
  • A well drilled into a confined aquifer is often an artesian well.
• Unconfined aquifer: An aquifer where the water table forms its upper boundary and it is not capped by an impermeable layer.
  • Rainwater directly recharges the unconfined aquifer.
• Aquifer recharge: The process by which water from precipitation or surface water percolates downward to refill an aquifer.
  • Conservation areas are crucial for aquifer recharge.

Variants and Related Words

• Aquiferous (adj): Relating to or bearing water.
  • The aquiferous layer was mapped by geologists.
• Aquiclude (n): A geological formation that may contain water but does not transmit it readily (e.g., clay). This is a related but distinct concept.
• Aquitard (n): A layer of rock or sediment that slows, but does not entirely prevent, the flow of water to or from an aquifer.

Synonyms

• Groundwater reservoir
• Water-bearing stratum
• Underground water source

Related Phrases

• Aquifer depletion: The reduction of water in an aquifer due to extraction exceeding recharge.
  • Aquifer depletion is a serious concern in arid regions.
• Aquifer system: A complex set of interconnected aquifers and confining layers.
  • The study focused on the entire regional aquifer system.

Noun

1. underground bed or layer yielding ground water for wells and springs etc