Do you want to find out whether water stored in your rainwater harvesting reservoir/rainwater collection tank would suffice your demand

Check out the SamSamWater Rainwater Harvesting tool ( which allows you to calculate your rainwater storage requirement based on your location (it fetches rainfall data for that place) and a few variables of your setup (roof type & size) and water demand. This tool is available online for free and explains the results.

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Join the network

South Asia Rainwater Network   We invite you to become a member of our network on RWH. Together we can certainly make a difference by supporting each other towards creating access to water for vulnerable population in the South Asian countries. Simply click the below link that you are interested in adding your organization to the network.   CLICK HERE TO REGISTER