Gallons Of Water On 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 on roof.

Just a half inch of rain falling on a 1 000 square foot roof will yield 300 gallons of water. A typical outdoor trash can holds 32 gallons. 1 inch of rainfall in an hour will cover 1 sq ft. 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. A service by the american water works association. The collectable rainwater from the roof can be calculated in gallons using this calculator based on the rainfall and area. For example on a 2 000 square foot roof you can collect 2 000 x 0 56 1 120 gallons inch of rain.

Convert the amount of rain from cubic inches into gallons. An online drip calculator that calculates the amount of waste from your leaky faucets. If you capture the rainfall runoff from a storm that just produces 1 10th of an inch of rain onto a 20 by 30 foot roof you end up with a full 32 gallon container full of water with 5 gallons left over. Take the dimensions of the footprint of your roof and convert them to inches.

To a depth of 1 in 1 hour. Easy formula to remember. 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.

There are 231 cubic inches of water in a gallon so using our example above divide cubic inches by 231 and you have a total runoff of approximately 1870 gallons of water or 432 000 231 1870 129. The answer is definitely yes. Converting this to gallons per minute per square foot gpm ft 2. Rainwater collection calculator in gallons.

Rainwater can be collected from the roofs using the rain water harvesting method. 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. Can you get enough water out of the gutter to make it worthwhile. So a 50 x 20 roof is 600 x 240 multiply the roof dimensions by the number of inches of rainfall.