It took 10 million years for the Ogallala Aquifer to fill with water. Now, says a report on eenews.net, after just over a century of pumping and irrigation, a third of the Ogallala is gone, and its future is in grave danger. The Ogallala supplies water to almost 20 percent of the nation's wheat and cotton crops and cattle. But in Haskell County, in the southwest corner of Kansas, water levels have dropped 150 feet since 1950. And that’s just one of many bleak examples.