Roof Rainwater Collection System

To use this calculator input the dimensions of your roof only area connected to rainwater harvesting system and the amount of rainfall in inches.

Roof rainwater collection system.

Figure out what you already have on hand then gather the following supplies. Rainwater collection calculation formulas and equations roof area ft2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember. Earthminded diy rain barrel diverter and parts kit water collection system to convert containers into rain barrels catch rain water for outdoor chores rbk 0001 4 6 out of 5 stars 644 31 98 31. A step beyond screens is to add a first flush diverter aka roof washer to your rainwater collection system.

Greenhouse roof has the highest collection efficiency most surfaces are a ok. Read down the list for info on roofing materials for rainwater harvesting. The supplies you ll need to make your rainwater collection system can easily be picked up at a hardware or home and garden store. 1 of rain on 1 000 sf roof will yield 623 gallons roof area m2 x precipitation amount mm amount collected liters.

How much rainwater can you harvest from your roof. While metal roofing or plastic sheeting e g. 1 standard 1 inch hose spigot with in. Here s a handy little calculator to help you estimate how much rainwater can you harvest from your roof.

There s just a short list of rooftop surfaces that rainwater harvesters should avoid.