California Irrigation Management Information System (CIMIS)

The California Irrigation Management Information System (CIMIS) is designed to help growers develop efficient water budgets and irrigation strategies. CIMIS is a standardized way of accounting for water consumed through evapotranspiration (ET) by the soil and plants. The main purpose of CIMIS is to provide information for irrigation scheduling by matching the amount of water applied to a crop with needs of the plant.

The CIMIS stations in this area are:

  • #206 Denair
  • #148 Merced
  • #161 Patterson
  • #71 Modesto

For more information about how to use CIMIS, visit the Department of Water Resources CIMIS website.

The Fresno State Center for Irrigation Technology hosts the Wateright website at .  The site provides free irrigation scheduling programs and tutorials that can be used to develop irrigation schedules using CIMIS data.  Additionally, the CIMIS site provides links to other irrigation scheduling programs (some of which must be purchased) and resources.

For more information about these programs, please contact Keith Larson at (209) 883-8386.