Water Portal / Rainwater Harvesting / SamSam RWH Tool

Welcome to the SamSamWater Rainwater Harvesting Tool.

Rainwater harvesting is an easy way to collect water during the rainy season and store it for use during the dry season. Using this tool you can easily determine the optimum size of your rainwater harvesting reservoir.

This tool will take you through 4 steps towards finding the right rainwater harvesting system for your unique situation.

1. Choose a location on a map, where your project will be located.
2. Input your roof size and select your roof materials.
3. Input how much water will be used per day (litres).
4. Results are shown! They reveal: summary, location, rainfall, water availability, water demand, required storage, dry and wet years, and data source.

There is also an Android App of the Rainwater Harvesting Tool available.

Let's get started!

SamSamWater Rainwater Harvesting Tool

Sample result of water levels in a tank per year