For sample purposes a 55 gallon barrel will be used.
Roof runoff collection.
If you have heavy runoff from roof downspouts and neighboring properties redirecting or capturing runoff can provide better control.
Rain can wash different types of contaminants into the water you collect for example bird poop on your roof could end up in your water barrel or tank.
Fumes from industry and traffic.
Greywater action calculate how much rainwater you can collect based on the square footage of the collection surface the roof and your annual rainfall.
From washing the car pets and laundry to bathing and drinking depending on the purification system and local regulations.
Home sustainability in the urban environment collection of roof runoff.
Rainwater can be used for a myriad of indoor and outdoor purposes.
Traditionally this involves harvesting the rain from a roof.
Rainwater collection calculation formulas and equations roof area ft2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember.
The system outlined below will walk you through the steps of determining your rain barrel sizes based on average roof runoff.
There were two splitters in the collection apparatus fig.
These techniques will minimize the amount of water that accumulates or that causes erosion in the problem area.
Find the square footage of your roof by measuring the footprint of the roof the slope of the roof doesn t affect the catchment potential.
The collected runoff was drained into a sample collection apparatus through a galvanized down spout.
Roof runoff was caught by a commercial galvanized gutter of 1 22 m wide installed at the end of each roof.
Resource conservation and environmental benefits objective for selected private homes collect detailed data on a household water consumption patterns and b potentially collectable rainwater runoff from the same dwelling.
1 of rain on 1 000 sf roof will yield 623 gallons roof area m2 x precipitation amount mm amount collected liters.
2 each collecting 25 of the runoff.
Additionally rain collection can abate drainage problems along with soil and foundation erosion from storm runoff and water pooling.
The rain will collect in gutters that channel the water into downspouts and then into some sort of storage vessel.
Rainwater can carry bacteria parasites viruses and chemicals that could make you sick and it has been linked to disease outbreaks 3 4.