Farmers Strain Central Valley Aquifers

NYT:

As a drilling frenzy unfolds across the Central Valley, California’s agricultural heartland, the consequences of the overuse of groundwater are becoming plain to see.

In some places, water tables have dropped 50 feet or more in just a few years. With less underground water to buoy it, the land surface is sinking as much as a foot a year in spots, causing roads to buckle and bridges to crack. Shallow wells have run dry, depriving several poor communities of water.

Scientists say some of the underground water-storing formations so critical to California’s future — typically, saturated layers of sand or clay — are being permanently damaged by the excess pumping, and will never again store as much water as farmers are pulling out...

Cannon Michael, a farmer who grows tomatoes, melons and corn on 10,500 acres in the town of Los Banos, in the Central Valley, has high priority rights to surface water, which he inherited with his family’s land. But rampant groundwater pumping by farmers near him is causing some of the nearby land to sink, disturbing canals that would normally bring water his way.

“Now, water is going to have to flow uphill,” said Mr. Michael, who plans to fallow 2,300 acres this year...

The land devoted to almond orchards in California has doubled in 20 years, to 860,000 acres. The industry has been working hard to improve its efficiency, but growing a single almond can still require as much as a gallon of California’s precious water.

The expansion of almonds, walnuts and other water-guzzling tree and vine crops has come under sharp criticism from some urban Californians. The groves make agriculture less flexible because the land cannot be idled in a drought without killing the trees.

When these guys are out of business, they will only have themselves and mother nature to blame.