Statewide Irrigation Systems Methods Survey

Beginning in 1991 and approximately every 5 - 10 years an irrigation questionnaire form is distributed by mail and online survey to California growers to update records on what types of irrigation systems are being used in California. The 1991, 2001, 2010, 2016, and 2021 surveys were distributed to growers who were randomly selected from a list of about 58,000 growers obtained from the California Department of Food and Agriculture (CDFA).

All rice-only, non-irrigation, and livestock-only growers were excluded from the list. In these surveys, growers were also asked to identify the main county in which they farmed and the acreages they had planted to each of 20 possible crop categories along with the associated irrigation method within that county.