This is the only water park that we've been to (this was our third visit) that is set right into the trees. All of the rides/attractions are separated by naturally treed areas, so you don't feel like you are in a huge multi-ride amusement park (even though there are plenty of different activities to choose from). There are a couple of pool activity areas for small children, one of which is called H2O, which our children enjoyed immensely.
This year they opened up a great new ride called Hubba Hubba Highway, where you float in a 3 foot deep "river" which pushes you gently along while you listen to Beach Boys music. After several times around the long and winding "highway", you feel like you've been in a whirlpool or hot tub, due to the jets along the side of the river which push the water along. This was a surprisingly relaxing activity even for someone who is not into water park rides.
There is a also a wave pool, as well as numerous more traditional water park slides.
Always a family favourite!