Roof Rainwater Collection System

A first flush diverter is a contraption that redirects the first purge of water coming from the roof during a storm away from the rainwater tank.

Roof rainwater collection system.

Rainwater collection calculation formulas and equations roof area ft2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember. Some states external consider rainwater the property of the state and prohibit its collection so you should consult with your local government for example your environmental quality department or health department before proceeding 2. A system of gutters and downspouts directs the rainwater collected by the roof to the storage cistern. 1 of rain on 1 000 sf roof will yield 623 gallons roof area m2 x precipitation amount mm amount collected liters.

Read down the list for info on roofing materials for rainwater harvesting. Rainwater harvesting is collecting the run off from a structure or other impervious surface in order to store it for later use. While metal roofing or plastic sheeting e g. The cistern typically located underground may be constructed of various materials including cinderblock reinforced concrete or precast concrete fiberglass or steel.

Traditionally this involves harvesting the rain from a roof. To use this calculator input the dimensions of your roof only area connected to rainwater harvesting system and the amount of rainfall in inches. 1 standard 1 inch hose spigot with in. How much rainwater can you harvest from your roof.

Rainwater collection is not allowed in all places. Greenhouse roof has the highest collection efficiency most surfaces are a ok. Some said they d never want to rely again on those old time methods of getting water. Pipe threads so you can access water from your rain barrel.

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. 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. The rain will collect in gutters that channel the water into downspouts and then into some sort of storage vessel.

The good news is most roofing materials are suitable for rainwater harvesting. Figure out what you already have on hand then gather the following supplies.