The answer depends on the units used for 16 x 32. Since you have not bothered to provide that crucial bit of information, I cannot provide a useful answer. The answer will depend on whether the depth increases linearly between the ends, also something that has not been specified.
15,320.1 US gallons of water.
If rectangular about 21,000 gallons if oval about 16,000 gallons
24,685.79 gallons
If the pool is 8 feet in the deep end and 3 feet in the shallow end, the total volume will be about 38,507 gallons of water.
20000
15,320.1 US gallons of water.
Go to http://www.havuz.org/pool-calculators.htm
If rectangular about 21,000 gallons if oval about 16,000 gallons
25000 gallons
It can be shallow or deep.
24,685.79 gallons
The volume is (16' x 32' x 7') = 3,584 cubic feet = 26,810.18 gallons (rounded)We have no way of knowing how much water is in it.It might even be empty.
If the pool is 8 feet in the deep end and 3 feet in the shallow end, the total volume will be about 38,507 gallons of water.
20000
You need more information. But, let's assume the pool is 8 feet deep at the deep end and 3 feet at the shallow end. If the pool is rectangular, the total volume will be 28,798 gallons of water.
Shallow water is more dense than Deep water. This means that a wave travelling from deep water to shallow water would bend towards the normal. Also, the wave would travel slower in the shallow than in the deep water
If the pool is 8 feet in the deep end and 3 feet in the shallow end, the total volume will be about 21,722 gallons of water.