Take a kayaking trip on the lake. Just be sure to not use a whitewater kayak to do that. I had a wonderful idea to paddle down the whitewater river until it dumped into the lake. Only one problem, I didn't realize that I was going to be paddling 2 miles in the flat lake water with a flat bottom white water kayak. I believe I completed an Olympic workout after I made it back to the truck.
I love the feel of the cool quick rushing water of a creek that is flowing fast. In the creek you have to learn to read the water and determine how deep the line you are planning to run is otherwise if it's not deep enough your beached. I have found that if you can navigate a creek and learn the technicals within it you can run about any whitewater since creeks have many underlying obstacles that you can't see above water but, that you will learn as you learn to read the water and determine your line to run the creek the safest and with the most thrill.