You might even want to know how many baths you could get from your rainstorm.
Rain fell from a roof.
Take the dimensions of the footprint of your roof and convert them to inches.
A service by the american water works association.
The catchment areais multiplied by the depth of rain that falls on it to give the total volumeof waterproduced.
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To calculate the runoff from any given rainfall.
Rainwater can be collected from the roofs using the rain water harvesting method.
The collectable rainwater from the roof can be calculated in gallons using this calculator based on the rainfall and area.
Anyone can begin the process of turning a home or business green by making and installing a basic rain barrel.
Although this calculation is simple in principle the units can make it a headache.
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An online drip calculator that calculates the amount of waste from your leaky faucets.
Either way you would like to know how much rain has fallen how many gallons have come down from the skies onto your roof yard block or town.
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To find how much rain you can collect in an average rain year multiply this number by the average inches of rain.
Just a half inch of rain falling on a 1 000 square foot roof will yield 300 gallons of water.
Factors such as evaporation wetting and soaking into the ground are not considered here.
1 of rain on 1 000 sf roof will yield 623 gallons roof area m 2 x precipitation amount mm amount collected liters other water conservation calculators.
1 place a piece of standard metal drip edge onto a table or between a pair of sawhorses.
The system outlined below will walk you through the steps of determining your rain barrel sizes based on average roof runoff.
In this example 600 x 240 x 1 144 000 cubic inches of water.
In the form below choose an area s and a rainfall amount to see how many gallons of water fell from the sky onto that area.
When you look at the numbers it s surprising how much water you can collect every time it rains.
For example on a 2 000 square foot roof you can collect 2 000 x 0 56 1 120 gallons inch of rain.
Code to add this calci to your website.
So a 50 x 20 roof is 600 x 240 multiply the roof dimensions by the number of inches of rainfall.
Rain barrel supplies list.
However there is a way that you can redirect the rain off the roof so it falls harmlessly out of the way.
A simple rain catchment system can provide water for outdoor use resulting in a lower water bill.
