USA Today: Oh Noes! We are running out of WATERZ!!!!
Time is running out for portions of the High Plains Aquifer, which lies beneath eight states from South Dakota to Texas and is the lifeblood of one of the world's most productive farming economies. The aquifer, also known as the Ogallala, makes possible about one-fifth of the country's output of corn, wheat and cattle. But its levels have been rapidly declining, and with each passing year more wells are going dry.
As less water pours from wells, some farmers are adapting by switching to different crops. Others are shutting down their drained wells and trying to scratch out a living as dryland farmers, relying only on the rains.
In parts of western Kansas, the groundwater has already been exhausted and very little can be extracted for irrigation. In other areas, the remaining water could be mostly used up within a decade.