Washoe County
Evapotranspiration (Et) Project


Applying this information to your lawn and yard.



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Data is subject to review and verification.

The Washoe County Regional Et Monitoring Program is a network of monitoring stations located in the region surrounding Reno, Nevada that monitor potential evapotranspiration rates. The potential evapotranspiration rates can then be used to determine lawn and crop watering needs. This project is sponsored by the Washoe County Regional Water Planning Commission in conjuction with Washoe County Department of Water Resources, the University of Nevada Cooperative Extension , University of Nevada College of Agriculture , and the Desert Research Institute of the University and Community College System of Nevada.

NOTE: All times displayed are local standard times, not daylight savings.


Data Updates


Data updates currently occur between
- 05:30 to 06:00 am PST (06:30 to 07:00 am PDT)
- 09:30 to 10:00 am PST (10:30 to 11:00 am PDT)
- 12:30 to 01:00 pm PST (01:30 to 02:00 pm PDT)
- 03:30 to 04:00 pm PST (04:30 to 05:00 pm PDT)
- 07:30 to 08:00 pm PST (08:30 to 09:00 pm PDT)
- 11:30 to 11:59 pm PST (12:30 to 01:00 am PDT)


Cooperating Agencies:

Washoe County Department of Water Resources
University of Nevada Cooperative Extension
Desert Research Institute
Western Regional Climate Center
Western Regional Climate Center, wrcc@dri.edu