Our AG is 4' deep, but has a 5' 6" deep end options that's a hopper--an 11'x14' flat-bottomed area. The manufacturer will also sell you a liner that goes to 7'6" but it's more cone-shaped. Neither is for diving. I can stand in the deep end (I'm 5' 10") comfortably, but it's up to my neck.

And it's deep enough to dunk a kid without him hitting bottom!