Many pool chemical products require that you know the amount of water your pool holds so that you correctly use their product. I found a quick formula for my oval pool on the back of one such product found at my local home improvement center: length x width x avg. depth x 5.9 = total gallons. For your specific question to be answered correctly, the shape of your pool is needed. However, if your pool is oval like mine, the answer would be approximately 17,370 gallons. After briefly researching the calculation for a rectangular pool, the formula to use is: length x width x avg depth x 7.5 If your pool is rectangular, the answer then becomes approximately 22,080 gallons.
One cubic foot of water contains 7.48 gallons. Figure the size of the pool by cubic feet and multiply.
Go to www.poolandspachemicals.co and put in your numbers and they wiil tell u
Assuming that the average water level would be 5.75' (8.5 + 3 / 2), you would figure it as 16 x 32 x 5.75= 2944 cubic feet x 7.48 (gallons per cubic foot) = 22,021 gallons