In times of drought, the Twin Oaks Aquifer Storage and Recovery Facility pumps water up from underground and sends it back to San Antonio for use. The facility uses water from the Edwards Aquifer and the Carrizo Aquifer.
Paul Robinson/San Antonio Water System
Ben Shaw hangs from an oil derrick outside Williston, ND, in July 2011. Williston's mayor, Ward Koeser, estimates that the town has between 2,000 and 3,000 job openings for oil workers.