Alpha Centauri 2

Community => Recreation Commons => Our researchers have made a breakthrough! => Topic started by: Buster's Uncle on December 19, 2014, 12:41:13 am

Title: Every Californian Needs to Save 290,000 Gallons of Water to End the Drought
Post by: Buster's Uncle on December 19, 2014, 12:41:13 am

Every Californian Needs to Save 290,000 Gallons of Water to End the Drought
Takepart.com
By Todd Woody | December 17, 2014 5:59 PM



It’s one of those numbers that boggle the mind: 11 trillion.

That’s how many gallons of water California needs to recover from its three-year-long, record-breaking drought, according to new data collected by NASA’s Jet Propulsion Laboratory (JPL) from satellite surveillance of groundwater supplies.

To put it on a more personal level, every one of California’s 38 million residents would need cut their water use by about 100,000 gallons annually for the next three years to replenish what’s been lost from the Sacramento and San Joaquin river basins since 2011.

Problem is, that’s more water than Californians consume every year. (Though the state’s biggest water hogs—the residents of the wealthy enclave of Rancho Santa Fe—use 213,300 gallons of water per person a year, according to California regulators.)

As rivers and reservoirs have dried up, California farmers have gone on a groundwater pumping frenzy, rapidly depleting subterranean supplies that took thousands of years to accumulate.

JPL scientists use a satellite program the called Gravity Recovery and Climate Experiment (GRACE) that measures tiny changes in an area’s gravitational pull to determine its groundwater capacity. The red areas on the map show where groundwater levels are falling. That dark red band running down the center of California’s Central Valley, the state’s agricultural heartland, is where the most water has been pumped.

The recent torrential rains that have lashed the California coast aren’t enough to erase the water deficit, according to scientists.

So how to make up for the shortfall?

“I think the No. 1 think that we can do right now is to not stop conserving,” Jay Famiglietti, the scientist who led the GRACE team, said in an email. “It is really wonderful to actually get some rain, but, really, it's going to take an above average rainy season this year and probably a couple more in the next few years to really get us out of this hole that we're in.”

Here’s another reason to keep those showers short and the car dirty: Data from NASA's Airborne Snow Observatory shows that this year’s snowpack in the Sierra Nevada Mountains—which supplies the state with much of its water—is half previous estimates.

“The 2014 snowpack was one of the three lowest on record and the worst since 1977, when California's population was half what it is now," said Tom Painter, the principal investigator for Airborne Snow Observatory.


http://news.yahoo.com/every-californian-needs-save-290-000-gallons-water-225901372.html (http://news.yahoo.com/every-californian-needs-save-290-000-gallons-water-225901372.html)

Title: Re: Every Californian Needs to Save 290,000 Gallons of Water to End the Drought
Post by: Lord Avalon on December 19, 2014, 03:32:40 am

They should stop growing crops which use up a lot of water, but on the other hand, such crops bring in the money. Per this Slate article (http://www.slate.com/articles/technology/future_tense/2014/05/_10_percent_of_california_s_water_goes_to_almond_farming.html), 10% of CA's water use goes toward almonds.

Quote

California is the nation’s leading producer of almonds, avocados, broccoli, carrots, cauliflower, grapes, lettuce, milk, onions, peppers, spinach, tomatoes, walnuts, and dozens of other commodities, according to a 2012 Department of Agriculture report (PDF) (http://www.nass.usda.gov/Statistics_by_State/California/Publications/California_Ag_Statistics/Reports/2012cas-all.pdf). The state produces one-third of our vegetables and two-thirds of our nuts and fruits each year. While fields in iconic agricultural states like Iowa, Kansas, and Texas primarily produce grain most of which (http://www.nytimes.com/2008/01/27/weekinreview/27bittman.html?pagewanted=all) is used to fatten animals), pretty much everything you think of as actual food is grown in California. Simply put: We can’t eat without California. But as climate change–fueled droughts continue to desiccate California, the short-term solution from farmers has been to double down on making money.