From NBCNews.com (Brian Brown):
The scope of this mounting crisis is difficult to overstate: The High Plains of Texas are swiftly running out of groundwater supplied by one of the world’s largest aquifers – the Ogallala. A study by Texas Tech University has predicted that if groundwater production goes unabated, vast portions of several counties in the southern High Plains will soon have little water left in the aquifer to be of any practical value.
The Ogallala Aquifer spreads across eight states, from Texas to South Dakota, covering 111.8 million acres and 175,000 square miles. It’s the fountain of life not only for much of the Texas Panhandle, but also for the entire American Breadbasket of the Great Plains, a highly-sophisticated, amazingly-productive agricultural region that literally helps feed the world.
This catastrophic depletion is primarily manmade. By the early eighties, automated center-pivot irrigation devices were in wide use – those familiar spidery-armed wings processing in a circle atop wheeled tripods. This super-sized sprinkler system allowed farmers to water crops more regularly and effectively, which both significantly increased crop yields and precipitously drained the Ogallala.
Compounding the drawdown has been the nature of the Ogallala itself. Created 10 million years ago, this buried fossil water is–in many places—not recharged by precipitation or surface water. When it’s gone, it’s gone for centuries…
“The depletion of the Ogallala is an internationally important crisis,” says Burke Griggs, Ph.D., consulting professor at the Bill Lane Center for the American West at Stanford University. “How individual states manage the depletion of that aquifer will obviously have international consequences.”[...]
“We’re headed for a brick wall at 100 miles per hour,” says James Mahan, Bruce Spinhirne’s father-in-law and a plant physiologist at the USDA’s Agricultural Research Service lab in Lubbock. “And, really, the effects of climate change are branches hitting the windshield along the way.”
From NBCNews.com (Brian Brown):
Last August, in a still-echoing blockbuster study, Dave Steward, Ph.D., and his colleagues at Kansas State University, informed the $15 billion Kansas agricultural economy that it was on a fast track to oblivion. The reason: The precipitous, calamitous withdrawal rates of the Ogallala Aquifer.
The Ogallala is little known outside this part of the world, but it’s the primary source of irrigation not just for all of western Kansas, but the entire Great Plains. This gigantic, soaked subterranean sponge – fossil water created 10 million years ago – touches eight states, stretching from Texas all the way up to South Dakota, across 111.8 million acres and 175,000 square miles.
The Ogallala supports a highly-sophisticated and amazingly-productive agricultural region critical to the world’s food supply. With the global population increasing, and as other vital aquifers suffer equally dramatic declines, scientists acknowledge that if the farmers here cannot meet ever-growing food demands, billions could starve.
Steward’s study predicted that nearly 70 percent of the portion of the Ogallala beneath western Kansas will be gone in 50 years. He’s not the kind of person to shout these results; he speaks slowly and carefully. Yet, he has the evident intensity of one who’s serving a greater purpose. “We need to make sure our grandkids and our great grandkids have the capacity to feed themselves,” he says.
Now the chief executive of the state, himself from a farming family, is using Steward’s report as a call to action.
“One of the things we [have] to get over … is this tragedy of the commons problem with the Ogallala,” says Governor Sam Brownback, a Republican who at age 29 was the youngest agriculture secretary in state history. “It’s a big common body of water. It’s why the oceans get overfished … You have a common good and then nobody is responsible for it.”
“That’s one of the key policy issues that you have to get around,” Brownback says in his roomy, towering office at the capitol in Topeka. “Everyone has to take care of this water.”
In that spirit, a tiny legion of farmers and landowners in the northwest corner of Kansas, where the Rockies begin their rise, have just begun year two of what could be one of the most influential social experiments of this century.
The group is only 125 in number but controls 63,000 acres of prime farmland in Sheridan County. Collectively, voluntarily, they have enacted a new, stringent five-year water conservation target, backed by the force of law and significant punishments.
The Local Enhanced Management Act, or LEMA, is the first measure of its kind in the United States. Specifically, the farmers are limiting themselves to a total of 55 inches of irrigated water over five years – an average of 11 inches per year…
“So now we have the high morality of the need to protect the ecosphere. But it’s legal to rip the tops off mountains. It’s legal to drill in the Arctic. It’s legal to drill in the Gulf. It’s legal to build pipelines. It’s legal to send carbon into the dumping ground called an atmosphere. So we’ve not yet reconciled the high moral with the legal.” [Wes Jackson]