Irrigation Training
and Research Center

:: California Evapotranspiration Data ::

Crop Evapotranspiration for Irrigation Scheduling and Design

To download files, select an irrigation method and relative precipitation year.   A map will pop up showing ETo zones.  Click on each zone on the map to download the data.  The data is available in .pdf or Microsoft Excel spreadsheet form.  The data in both formats is exactly the same.  Note:  For the .pdf files, you will need Adobe Acrobat Reader in stalled on your system.  If you do not currently have Acrobat Reader, click here for a free download.  If you would prefer to access the data as .dif (data interchange format) files, please email mjholman@calpoly.edu.

Please note:  The pages linked in the table below use image maps to visually indicate the zone locations.  If you already know the zone you are looking for, or if you are using a screen reader or other assistive technology, please click here for a text-based listing of zones and data.

>> Link to CIMIS data
>> Evapotranspiration main