The deepest above-ground pool available is the Intex 36-Foot by 16-Foot by 52-Inch Above-Ground Pool. The four-foot depth may not seem like a lot, but in the world of above-ground pools, it’s tough to find deeper floors. You can buy specially made above-ground pools with a depth up to six feet, but these are only available from pool-installation companies. And when you go that deep, you must make sure the walls, liner, and supports can handle the water pressure. Even for standard above-ground pools, manufacturers will recommend you only fill the pool to 90-percent capacity. This gives you enough room to get in and swim without dumping gallons of water off the sides.