How Many Gallons Of Rain On My Roof

Rainwater can be collected from the roofs using the rain water harvesting method.

How many gallons of rain on my roof.

However calctool s unit menus remove this issue doing all the unit conversion for you. Here you can easily find how much rainwater you can collect from you roof how much you need to remove from a courtyard or how much runoff you can expect from an area of land. For example on a 2 000 square foot roof you can collect 2 000 x 0 56 1 120 gallons inch of rain. The answer is about 623 gallons.

So multiply 623 gallons by the number of surface square feet of your roof. 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. In our example it would be 623 x 2 000 which equals 1 246. 3 to account for losses and inefficiency you can expect to collect about 75 of the actual rainfall so your calculation should be multiplied by 75.

You might even want to know how many baths you could get from your rainstorm. To calculate the runoff from any given rainfall. In this example 600 x 240 x 1 144 000 cubic inches of water. So a 50 x 20 roof is 600 x 240 multiply the roof dimensions by the number of inches of rainfall.

You have to admit that whether you re in a drought situation or not it s hard to pass up that much of a free thing. An inch of rainfall on a square foot of surface area yields 623 gallons. 2 every square foot of roof space collects 6 gallons of water in a 1 inch rainfall. Take the dimensions of the footprint of your roof and convert them to inches.

So for each inch of rainfall your roof could collect 1 246 gallons of rainwater. If you get about 10 inches of rain over the course of the spring and summer an average 1 360 square foot roof would yield 8 160 gallons of rainwater. 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. Although this calculation is simple in principle the units can make it a headache.

Rainwater collection calculator in gallons. To find how much rain you can collect in an average rain year multiply this number by the average inches of rain. The collectable rainwater from the roof can be calculated in gallons using this calculator based on the rainfall and area. The amount of rain that fell during your storm is dispayed below.