Page "Sacramento River" Paragraph 4

Back in 1873, Colonel B. S.

Alexander of the Army Corps of Engineers had written in his surveys of the Central Valley's hydrology and irrigation systems of a great network of pumps and canals that would take water from the water-rich Sacramento River basin into drought-prone South and Central California, especially the San Joaquin Valley.

The Sacramento River is often said to receive " two-thirds to three-quarters of northern California's precipitation though it has only one-third to one-quarter of the land.

The San Joaquin River watershed occupies two-thirds to three quarters of northern California's land, but only collects one-third to one-quarter of the precipitation.