How much water is my pool losing?

Calculating water surface area (Sq. Ft. of Pool):
Length of Pool x Width of Pool = Surface Area of Pool
Example: 18 x 36 = 648 square feet (water surface area)

Calculating make-up water (refilling due to leak):
(Inches of Water) x (Pool Surface Area in Sq. Ft.) x (.625) = gallons/water

Example: Oh My!!  My pool water dropped 2 inches last night.
2 x 18 x 36 x .625 = 810 gallons/water lost overnight = BIG Leak!

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