• Agricultural Irrigation

    Scheduling Calculator

  • Landscape Irrigation

    Scheduling Calculator

Is this your first visit to the calculator?

This Irrigation Scheduling Calculator uses real-time daily Evapotranspiration (ET) rates determined from climate stations that are linked to www.Farmwest.com.

For new users, CLICK HERE to access our handy guides on how to use these calculators.

However, climate stations in the Province of Quebec are provided by MDDEP (Environment Quebec) and Environment and Climate Change Canada through AgWeather Quebec.

For cases where climate stations are not available, the Calculator allows users to input local ET data that reflects the climate conditions at their specific location.

This tool is funded in part through Growing Forward 2, a federal-provincial-territorial initiative.

Need help using the calculator Open Calculator User Guides in the lower left will provide you with guides.


The Calculator provides the best estimates for irrigation schedules possible based on the information users entered. While every effort has been made to ensure the accuracy and completeness of the information, the information should not be considered as final. This website, its content contributors, web-developers and any individuals or parties involved in the development and maintenance of the website are not liable to any damages to users' properties or irrigation management arising from the use of the information provided in the website. Users are strongly encouraged to seek advice from appropriate professionals and experts if they feel uncertain about the information provided. I Agree

Open Calculator User Guides