Rain Water Collection From Roof

Rainwater collection in washington state outlines the department of ecology s 2009 policy decision allowing rainwater collection and reuse.

Rain water collection from roof.

1 of rain on 1 000 sf roof will yield 623 gallons roof area m2 x precipitation amount mm amount collected liters. That is why my husband and i began harvesting our rainwater. Doesn t that sound like a lot of water that you could harvest and use for free. Rainwater harvesting is legal in illinois but with two major statutes.

Collecting rainwater is a technique that has been practiced for centuries as an environmentally friendly method to collect rain for distribution in gardens and across landscaping. Dirt and germs can be washed into collected rainwater from the roof especially when rain follows several days of dry weather 3 4 9. Traditionally this involves harvesting the rain from a roof. The rain will collect in gutters that channel the water into downspouts and then into some sort of storage vessel.

Rain barrels for example do not provide any type of disinfection or filtration. House bill 991 2011 amended the homeowners solar rights act it requires that within 120 days after a homeowners association the association shall adopt. Rain water harvesting usually involves larger cisterns or multiple barrel systems that can store enough water to help. Around 600 gallons of rainwater can be harvested from about one inch of rain if it falls from a thousand square foot roof.

Or less if you re only gathering from one part of the roof. Rainwater collection calculation formulas and equations roof area ft2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember. You ll need to clear out an area of your yard to create a depression that s 3 4 ft 91 122 cm deep and as long and wide as you have room for. Well we thought so too.

A rainwater garden uses runoff water from roofs and gutters to grow vegetation and flowers while filtering out harmful chemicals. T he green infrastructure for clean water act which relates to water conservation efficiency infrastructure and management while promoting rainwater harvesting. Today houses are built with roof gardens that naturally absorb the rain and grow an insulating layer of grass. The area is based on the footprint of the roof which can be calculated by finding the area of the building and adding the area of the roof s overhang.

Sizing a catchment area the size of the catchment area or roof will determine how much rainwater that you can harvest.