Calculating Sprinkler Timer Schedules

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Water Better with the Weather

The amount of water needed by plants changes with the weather and length of day. Regularly adjusting the watering schedule is essential to maintaining a healthy landscape.

It’s Easy!

Start with a good watering schedule. Use Irrigation Scheduling Tools and How to Program a Sprinkler Controller (pdf), or create your own using the calculators provided by Irrigation Water Management Services.

Once you’ve made a schedule and entered it into your sprinkler timer, adjust it every week or two to match the weather. Learn how to use the features on your timer to water efficiently.

Tools on the IWMS website:

Scheduling charts to use in the field