Downtown San Jose sank 13 feet between 1910 and 1970 from excessive groundwater pumping. Repairs to sewers, roads, and bridges, plus the construction of levees to protect land below high tide from flooding, cost the area at least $750 million in 2013 dollars. The Santa Clara Valley region would still be sinking at a rapid rate if it weren’t for the foresight of the Santa Clara Valley Water District and supplies from the Sacramento-San Joaquin Delta. In the 1960s, the State Water project started delivering Delta water to the Bay Area, Central Valley and Southern California.