Its construction authorized by the Rivers and Harbors Act of 1937, the massive Central Valley Project (CVP) encompasses 20 reservoirs with a combined storage capacity of 11 million acre-feet, eight power plants, two pumping-generating plants and some 500 miles of major canals and aqueducts. In a normal year, the CVP delivers 7 million acre-feet of water to about 3 million acres of farmland in the Central Valley.