SAN FRANCISCO (AP) — Ever since the California Aqueduct was built in the 1960s, water has flowed from Northern California's snow-capped peaks to the parched cities in the southern part of the state.
Now, amid one of the worst droughts in California history, state officials are considering an audacious plan to send some of the water back uphill.
The plan calls for using diesel-powered pumps to reverse the flow along a section of the aqueduct and help farmers irrigate their crops.
It could cost millions of dollars and would be a complex engineering challenge. But supporters say it's worth it to keep grapevines, pistachios and pomegranate trees alive.