The formula for figuring out the amount of gallons is on the back of pool chemical containers. I am not sure what the formula is for an oval.
Check here: http://www.poolspa.com/calculator/
If the pool floor slopes uniformly from end to end, the average depth can be found by adding the deepest and shallowest depth measurements and dividing the results by two. If the pool's dimensions are in feet, the volume will be in cubic feet. One cubic foot of water equals 7.5 gallons.
Example: The water volume of a pool 60 ft. long, 30 ft. wide and that slopes in depth from 3 ft. to 10 ft. is as follows: 30 x 60 x ((10 + 3)/2) = 11,700 cubic ft. of water 11,700 x 7.5 = 87,750 gallons
To calculate you would need the height of the pool. (pi)(radius2)(height)/231 = gallons
Genrally speaking water takes up 7.4 cubic foot per gallon; given that 30x30x1 is 900 cubic feet, then around 6,660 gallons.
12,000
25000 gallons
This aquarium can hold a maximum of 10 gallons of water.
If filled to the top it would hold 6.34 gallons.
This pipe will hold 1,468.8 gallons of water.
For this size pool, about 4,862.3 gallons.
It hold 20 gallons.It hold 20 gallons.
Up to 168.3 gallons of water.
A 25-acre pond that is uniformly 6 feet deep will hold about 48,877,714 gallons of water.
This pool can hold a maximum of about 5,707.6 gallons of water.
How deep is the pool?
Approximately 8,146,286 gallons of water.
This pool can hold a maximum of about 9,403 gallons of water.
3416 gallons
66 gallons
Approximately 977,553 gallons of water.
315 gallons.
Approximately 48,878,000 gallons.
This pool can hold a maximum of about 18,420 gallons of water.