Gallons Of Water Per Square Foot Of Roof

Just a half inch of rain falling on a 1 000 square foot roof will yield 300 gallons of water.

Gallons of water per square foot of roof.

To calculate the runoff from any given rainfall. Take the dimensions of the footprint of your roof and convert them to inches. 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. For example on a 2 000 square foot roof you can collect 2 000 x 0 56 1 120 gallons inch of rain.

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. Per day it would take just short of 6 days to lower the level by 1 inch. Understanding how many gallons are within a square foot of water is useful in determining the amount of water required to fill a structure such as a pool or a pond. The answer is about 623 gallons.

When you look at the numbers it s surprising how much water you can collect every time it rains. Rain barrel supplies list. If your average rainfall was 25 inches year your annual collection potential is 1 120 x 25 28 000 gallons year. So a 50 x 20 roof is 600.

Take a guess what is the volume of water that runs off a 1 000 square foot roof during a 1 rain storm. So if they drain 23 million gal.