Holmes, I don't think the folks in alabma would know what to make of a photo of our 'whitewater parks with no water' at this time of year. Golden park is chok full of, what looks like, glaciated ice chunks gone wild. I'll send you some pics if you want though -- It's pretty crazy looking.
In the mean time, you should peep http://www.wwparks.com/
- there are some great photos and info on "Getting a Whitewater Park Started in Your Community" on there. I would imagine that once you get the approval and funding for a park out there, these would be the guys to call.
If you're still strapped for photos, give me a shout and i'll see if i can't help you out once the ice clears.