The cause is known: People are pulling unsustainable amounts of water out of underground aquifers, primarily for food production. With the water sucked out to irrigate crops, a practice that has accelerated during the drought, tens of thousands of square miles are deflating like a leaky air mattress, inch by inch.
Groundwater now supplies about 60 percent of the state’s water, with the vast majority of that going to agriculture. Tens of thousands of groundwater pumps run day and night, sucking up about 5 percent of the state’s total electricity, according to a Reveal analysis of the increased pumping resulting from the historic drought. That’s an increase of 40 percent over normal years – or enough electricity to power every home in San Francisco for three years.
The sinking is starting to destroy bridges, crack irrigation canals and twist highways across the state, according to the U.S. Geological Survey .... https://www.revealnews.org
