Case history: San Joaquin Valley
Louis A. Beck, California Department of Water Resources
California Agriculture 38(10):16-17. DOI: 10.3733/ca.v038n10p16.
Not available – first paragraph follows:
Most of the San Joaquin Valley has been farmed in one fashion or another for more than a hundred years The Valley trough was generally dry-farmed until deep-well turbine pumps were developed in the 1930s and 1940s and irrigation became common. Even though much of the land was in production, it was not irrigated every year: there was some pattern of rotation, such as dry-farming for one year, irrigation for two, and fallow for one. Now, almost 5 million acres of agricultural land on the Valley floor are irrigated.
Louis A. Beck is Chief, San Joaquin District, California Department of Water Resources, Sacramento.