How to Use the Rainwater Harvesting Calculator
- Roof Area: Measure the section of your roof where you plan to collect rainwater and enter the size in square feet.
- Rainfall: Find the average rainfall for your area (check weather services) and input the amount in inches.
- Efficiency: Estimate how much rain your roof can capture.
- Metal roofs are most efficient; tile/concrete are mid-range, and asphalt shingles least efficient.
- Click 'Calculate': Get an estimate of the potential rainwater you can collect!
Tips:
- Consider water storage capacity when planning how to use harvested rainwater.
- Check local regulations about rainwater harvesting.