Really? From
here....
"A cry went out from the agrarians to the politicians: “Steal us a river.” They were eyeing the flood flows of the Sacramento River up north. If the plan sounded audacious, well, just such a theft had already been accomplished by the City of Los Angeles, reaching up and over the mountain to steal the Owens River.
This is how the federal government, in the 1940s, came to build the Central Valley Project, damming the rivers and installing mammoth pumps in the Sacramento–San Joaquin Delta to move water to the dying farms in the middle. This is how the state of California, in the 1960s, built the State Water Project, installing more pumps in the delta and a 444-mile-long aqueduct to move more water to grow more farms in the middle and more houses and swimming pools in Southern California.
This is how we’ve come to the point today, during the driest decade in state history, that valley farmers haven’t diminished their footprint to meet water’s scarcity but have added a half-million more acres of permanent crops—more almonds, pistachios, mandarins. They’ve lowered their pumps by hundreds of feet to chase the dwindling aquifer even as it dwindles further, sucking so many millions of acre-feet of water out of the earth that the land is sinking. This subsidence is collapsing the canals and ditches, reducing the flow of the very aqueduct that we built to create the flow itself. "
This is how the ground water was drained me thinks. Over time, sucking from rivers and lakes, in the long run the bill has to be footed from somewhere.
Nothing is for free, nor without impact.