I know that IOA has two really good water rides in Dudly Do-Right and Bluto's Barges. Are there are rides in US that soak you? Just trying to plan my park wardrobe!
Not really - you might get a little wet on Jaws depending on where you sit. If you're on the outside seat on either side there's good chance you'll get a little splash at some point. But that's the only water ride at US.
Oh, I just remembered that you'll also get a little wet in the Twister attraction. It is, after all, simulating a tornado/storm!