Gallons Of Water Per Square Foot Of Roof

To calculate the runoff from any given rainfall.

Gallons of water per square foot of roof.

So if you have 2 500 square feet of roof available for water catchment and a single inch of rain falls one day we see that. Or 0312 gallons per minute sq. Meaning you can capture about 62 gallons per sq ft. Roof area square feet per linear ft of gutter underneath.

To figure out the square footage of a surface multiply the width x length. Up to 6 12 7 12 8 12. The square footage of a roof is the same whether it is pitched or flat. Roof area the 3 inch rainfall will produce 18 700 gallons in one hour at the rate of 312 gallons per minute.

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 x 240 multiply the roof dimensions by the number of inches of rainfall. Primary cause for water spillage is debri in the gutter. The answer is about 623 gallons.

Calculate rainwater collection in gallons rain fall inches. In this example you would multiply 7 48 times 600 to get 4 488 gallons of water. Multiply the cubic feet by the amount of water per cubic foot which is 7 48 gallons. Using a 10 000 sq.

For example on a 2 000 square foot roof you can collect 2 000 x 0 56 1 120 gallons inch of rain. It doesn t take many sticks leaves or needles to impede the proper flow of. Take the dimensions of the footprint of your roof and convert them to inches. The collectable rainwater from the roof can be calculated in gallons using this calculator based on the rainfall and area.