Nice blog entry on paddling the Wenatchee River and a couple of tributaries but aimed specifically at kayakers. The description of the Wenatchee River from Leavenworth to Cashmere is thorough and informative, and would be a useful reference for novice boaters.
The author seems to take a slightly cavalier attitude about the two more challenging stretches of river mentioned in the posting --- Tumwater and Icicle Creek --- though I am completely aware that not being a kayaker and coming from a more conservative attitude about river running, I might be mis-reading this.
I think I would use a more cautionary framing when suggesting either stretch of white water since anyone who isn't an expert should not come anywhere near those two runs.
Other river rafting outfitters on the Wenatchee, besides Osprey are: Orion River Rafting http://orionexp.com, Wildwater River Tours http://www.wildwater-river.
"Wenatchee River from Leavenworth to Cashmere"
- » our rivers Paddle the Wenatchee (view on Google Sidewiki)