California's water comes from the north

Perhaps the most fundamental water fact about California is that, historically, water was extremely scarce in the southern two-thirds of the state. The vast majority of precipitation occurs up north, mainly in the winter. So during the 20th century, both the state and the federal government built an elaborate system of canals, aqueducts, and reservoirs to bring water south:
read more >>>>
More facts about the California drought >>