Gallons Of Water Per Square Foot Of Roof

To get an idea how much water the roof of your own house might yield use the rainfall harvest calculator above.

Gallons of water per square foot of roof.

So if they drain 23 million gal. If your average rainfall was 25 inches year your annual collection potential is 1 120 x 25 28 000 gallons year. When you look at the numbers it s surprising how much water you can collect every time it rains. Take the dimensions of the footprint of your roof and convert them to inches.

Per day it would take just short of 6 days to lower the level by 1 inch. 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. Take a guess what is the volume of water that runs off a 1 000 square foot roof during a 1 rain storm. Rain barrel supplies list.

Or maybe a low pressure cell has been napping overhead and your arm is hurting from holding that umbrella while you watch your basement fill up with water. The answer is about 623 gallons. For example on a 2 000 square foot roof you can collect 2 000 x 0 56 1 120 gallons inch of rain. Just a half inch of rain falling on a 1 000 square foot roof will yield 300 gallons of water.

To calculate the runoff from any given rainfall. Performing this calculation requires you to also know the depth of the area in which the water is located as you need to have cubic feet to convert to gallons.