Pool Water Volume Calculator: Calculating Water Needed for Your 15ft x 24ft Pool

The volume of water in a rectangular in-ground pool can be calculated by multiplying the length, width, and average depth of the pool. To calculate the average depth, add the shallow and deep ends' depths and divide the sum by 2.

Given the dimensions of the pool are 15 feet (ft) in length, 24 feet (ft) in width, and has a shallow end depth of 3 feet (ft) and a deep end depth of 6 feet (ft), the average depth of the pool would be:

Average Depth = (3 ft + 6 ft) / 2

Average Depth = 4.5 ft

Now we can calculate the volume of water for the pool:

Volume = (Length x Width x Average Depth) x 7.5

Volume = (15 ft x 24 ft x 4.5 ft) x 7.5

Volume = 2,430 cubic feet

Since 1 cubic foot of water is approximately equal to 7.48 gallons, we can convert the volume to gallons to find the amount of water needed to fill the pool:

Water Amount = Volume x 7.48 gallons/cubic foot

Water Amount = 2,430 cubic feet x 7.48 gallons/cubic foot

Water Amount ≈ 18,184 gallons

Therefore, approximately 18,184 gallons of water are required to fill a 15 x 24 swimming pool with an average depth of 4.5 feet.