The US state that has the largest aquifer is the state of Texas.
Texas has the largest aquifer in the United States which is the Ogallala Aquifer that underlies much of the high plains region.
The Ogallala Aquifer in Texas is made up of sand, gravel, clay and silt and has a thickness of 800 feet.
The Ogallala Aquifer is a shallow water table aquifer surrounded by sand, silt, clay, and gravel located beneath the Great Plains in the United States.
As one of the world's largest aquifers, it underlies an area of approximately 174,000 sq mi in portions of eight states.
The Ogallala Aquifer was named in 1898 by geologist N. H
But despite its size, the Ogallala is drying up.
Scientists have reported for years that, if recharge and use continue at current rates, research shows that much of the Ogallala in Texas could be depleted as soon as 2100.
The aquifer is a finite resource as the region supplies its industries' and communities' daily needs.
The HPWD noted that in an average year, Ogallala regains around half of an inch of water.
That recharging mostly happens through playa lakes, shallow dips in prairies or plains where rainwater can collect.