Multiple choice Large aquifer in central US, overextracted for farming & fracking, 6000 yrs to recharge Edward's aquifer Ogallala aquifer Floridian aquifer Amazon basin Reveal answer Fill a bubble to check yourself B Correct answer Explanation The Ogallala Aquifer is a vast underground water source in the central United States. It is being depleted much faster than it can be recharged, primarily due to intensive agricultural irrigation.