This pool has a capacity of about 13,540 gallons of water.
About 158.6 gallons per inch for an 18-foot diameter round pool.
10,408 gallons.
5,310 gallons.
About 13,594 gallons.
About 3,400 gallons.
About 18,402 gallons.
7,646.4 gallons are needed.
About 13,594 gallons.
About 2,550 gallons.
About 24 gallons.
8000 Gallons -- ANSWER -- For every foot of water in the pool there is 1,585 imperial gallons.