'The definition of a small pool can vary, but typically, small pools are around 12 to 16 feet in length and 6 to 8 feet in width,' says Scott Keller of LoveGunitePool.com. 'As for depth, it largely depends on the intended use of the pool,' he continues. Plunge pools, for example, are often quite deep (about 5 to 7 feet), he says, while cocktail pools might only be 3 to 5 feet deep.
'However, these dimensions can be adjusted according to individual needs and preferences,' he adds. Just remember to ensure there's enough space to walk alongside, and to safely get in and out of it.