How California’s ancient hidden waterways, paleo valleys, could be key to recharging state’s groundwater
For California’s water experts, months in the air could soon reveal secrets under the ground, including the remnants of ancient waterways hidden for thousands of years. It’s a discovery that could be key to recharging the state’s depleted groundwater. Katherine Dlubac, Ph.D., is overseeing the high-tech survey for the California Department of Water Resources. … [H]elicopters deploy spaceship-sized antennas, ping the ground with electromagnetic signals, mapping the geology deep below the surface. The technique was piloted in California by researchers at Stanford, led by prof. Rosemary Knight Ph.D.