The Whitewater Rating System: The Grand Canyon uses its own whitewater rating scale using numbers 1-10. 1 being a riffle and 10 being roughly equivalent to the international scale's Class 5. From Lees Ferry to our takeout we would go through 42 rapids rated 5 or higher and two (Crystal and Lava) rated 10.
Drop and Pool: The Grand Canyon section of the Colorado River is a ‘drop and pool’ river, referring to the characteristic long stretches of flatwater interspersed with rapids created by debris from numerous side canyons.
Be Prepared to Flip Out: We had some experienced oarsmen on the trip and were lucky that none of our boats flipped or had any swimmers. However, some of the other trips around us weren’t so lucky. While scouting at Horn Creek Rapid, we watched an oarsman from another party cartwheel off his boat at the top of the rapid, leaving his passenger to fend for herself.
Bring Other Toys: In addition to our gear boats and two kayaks, we brought along a few more toys to use on the water. We had three paddleboards that we planned to use mostly on the flatwater and a few of the smaller wave trains.
The Minimax: AJ also brought along a little 10.5 foot Minimax raft that accommodates 5-6 paddlers. The Minimax turned out to be the ultimate Grand Canyon vessel. Some of the waves and holes in the bigger rapids feel enormous and dwarf even the big gear boats. The large rafts regularly flip if oarsmen don’t find the right line or square up to the big waves. From the outside perspective, the Minimax looked like a tiny toy boat bobbing down the river. For the paddlers it felt like we were sending it through the torrents on little more than an inner tube at times. It had clean runs through some of the biggest rapids on the river including Hermit, Crystal, and Lava.