Aquifers play a vital role in the water cycle by serving as natural underground reservoirs that store and transmit water. These geological formations consist of permeable rock or sediment that can hold substantial amounts of water. Aquifers provide a crucial source of freshwater for drinking, agriculture, and industrial use. They also help maintain stream and river flow during dry periods. Sustainable management of aquifers is critical to ensure water supply amidst growing demand and changing climate patterns.