How do I know how much water I can get from my roof?
Burnet County Texas
You can collect .6 gallons for every square foot in an one inch rainfall. So a 2,000 sq ft roof can harvest 1200 gallon when it rains 1 inch
Email me at firstname.lastname@example.org and I will send you a booklet with all the formulas for how much you can capture and how much is needed in the landscape