At Stormalong Bay, the lazy river goes as deep as 8 feet though it is not that deep for very long.... Its highest point is 4.5 feet deep and mostly stays around 5-6 feet. You will not find that many small children (0-6 yrs old) around the lazy river that often and there is nothing to worry about b/c there are two lifeguards watching over the entire lazy river at all times. If you have any other questions about Stormalong Bay just let me know as i am a lifeguard there.
Oh, also, i should tell you that if you have some small children there are two great areas for you to head over to at SAB; 1: the slide in the pirate ship (no, not the big one) it is a small slide that goes into a pool that is only 3ft deep. 2: the giant quiet pool (though not so quiet) that only gets to 3ft deep and is mostly 2ft deep.
JAM