The Irrigation Water Management Society
 is a non-profit organization
 committed to promoting
 the wise and efficient use of water
 in golf, landscape, and agriculture.
> Check out our Calculators
EPA WaterSense
 
Regional weather data and calculators  

Estimate your water needs and create schedules for automatic watering systems

Seattle Area, Current Watering Index , Weekly Watering Forecast

East Seattle Area

You can have weather data and calculators for your region
 - click here for more info -

See how local news stations use the watering index to help conserve water
Classes & Exams  

Request a Certified Site Water Planner class and exam
 - click here for more info -
 Water Conservation Events  
Post your organization’s water conservation event on our Event Calendar
 - click here -
Get Email Updates for the Irrigation Index  
Get daily updates when the Irrigation Index changes, and/or get weekly updates of the watering forecast:
Email:
Daily Irrigation Index update
weekly Watering Forecast Update
We will not share your email address
Certified Site Water Planner Program (CSWP)  
Professionals! obtain recognition and learn profitable skills for developing site water management plans
 - click here for more info -
Soil Moisture - ET Demonstration
Project		  
 - click here for more info -
New! Tips for using water
conservation features on your
automatic irrigation controller		  
 - click here for more info -
New! Cascade Water Alliance adds
new weather station for Issaquah
to the Puget Sound Weather
Station Network		  
 - click here for more info -
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We are extremely grateful to the following organizations. Their commitment to water conservation and to the support of the IWMS is greatly appreciated: