The 87% Statistic That Should Change How You Pack for a River Trip

On day three of a Grand Canyon trip, the safety talk starts to sound like background noise. You've heard it: PFD on, whistle ready, know the signals. Then someone goes for an unplanned swim in a Class IV rapid. The next ten seconds matter more than anything else on the trip.

I've seen the aftermath of a foot entrapment. It's not something you walk away from. That's why I'm writing this.

What the Numbers Actually Say

In 2024, where cause of death was known, 76% of fatal boating incident victims drowned. Where PFD usage was known, 87% were not wearing a personal flotation device. Those numbers come from the US Coast Guard's 2024 Recreational Boating Statistics. Nearly nine out of ten people who died on the water weren't wearing a life jacket. That's not about rough water or bad luck. It's about a choice.

A Hypothetical That Isn't Really Hypothetical

Picture a 16-day commercial trip down the Grand Canyon, Lees Ferry to Diamond Creek—226 river miles. You're in an oar raft, about 16–18 feet long, rowed by one guide. The water is cold because it's released from the bottom of Glen Canyon Dam. By day three, half the raft is treating the morning safety talk like background noise.

Then you hit a Class IV rapid. The scale says Class IV requires precise boat handling in turbulent water, and group rescue is usually required if a swimmer goes overboard. You get tossed. You're in the water, gasping. What you do next matters.

The PFD Is Not Optional—And the Law Agrees

Under US federal law (33 CFR 175), every recreational vessel must carry one USCG-approved wearable PFD for each person on board. Any boat 16 feet and longer—except canoes and kayaks—must also carry one throwable PFD (Type IV). On a raft trip, that means your PFD has to be Coast Guard approved, properly fitted, and worn at all times on the water. Not stowed under a seat. Not used as a cushion. Worn.

I don't care how strong a swimmer you are. I don't care if the water looks flat. The 87% figure is the only argument you need. If you're the trip leader, you have the authority—and the responsibility—to enforce this. No PFD, no seat in the raft. That's my rule. I'd rather lose a customer than attend a funeral.

Swimming Position and Foot Entrapment

Back to our swimmer. The moment you surface, you need to get on your back, feet downstream, and not lock your knees. In defensive swimming, you lie on your back with feet held high and pointed downstream, using your feet to kick off objects at the surface and your arms to maneuver in the current. You do not stand up. Foot entrapment is a major hazard, and it can occur anywhere in swiftly moving water—do not attempt to stand up in strong current if the water is more than knee deep.

If you're in slow-moving or deep water, you switch to aggressive swimming: roll onto your stomach and swim hard for shore, watching for eddies and slackwater to get out of the current. But in a Class IV rapid, you're usually in defensive mode until you're through the worst of it.

Here's a detail that doesn't get enough attention: if you're the swimmer, angle your body about 45 degrees relative to the current, with your feet pointing downstream and slightly toward the shore you're aiming for. This helps you ferry across the current rather than just being swept downstream. It's a small adjustment that can mean the difference between catching an eddy and missing it.

Throw Bags, Signals, and the Guide's Role

Your guide should have a throw bag ready. A throw bag holds about 50–70 feet of rope and is carried by guides for rescue. A swimmer should grab the rope, not the bag. That last part is critical. I've watched panicked swimmers clutch the bag and let the rope go slack. Grab the rope. Let the guide pull you in.

Communication is the other half of rescue. The universal OK sign is patting the top of your head; three whistle blasts signal distress. Under the IRF river signals, one whistle blast means 'look at me / your attention please,' and three repeated blasts mean 'I need help'—and signals should be repeated in chain from raft to raft. If you're in a raft and you see a swimmer, you need to know instantly whether they're okay or in trouble. That's not the moment to guess. Learn the signals before you launch.

Helmets are recommended for Class IV or higher whitewater. On our hypothetical Grand Canyon trip, you're running Class IV and V—wear the helmet. It's not about looking cool. It's about staying conscious if you hit a rock.

The Big Four and Cold Water

American Whitewater's Safety Code, adopted in 1959 and revised in 2024, boils prevention down to the 'Big Four': dress for the swim (always wear a life jacket), sober is safer (stay alert and think clearly), know before you go (research the river, avoid high water, dams, and trees), and boat with a team (set safety and help others). I'd add a fifth for rafters: respect cold water. Sudden immersion can induce rapid, uncontrolled breathing and cardiac arrest; about 50 percent of body heat is lost from the head. Cold shock passes in about a minute, but cold incapacitation—loss of effective use of fingers, arms, and legs—can hit within about 10 minutes. Hypothermia can cause loss of consciousness in as little as one hour. On a Grand Canyon trip, the water is cold year-round. Dress for the swim, not for the air temperature.

I'm not saying don't run big whitewater. I'm saying run it with gear and knowledge that match the risk. The International Scale of River Difficulty rates rapids from Class I to Class VI, and Class VI is often considered unrunnable due to the high likelihood of serious injury or death. But the scale also warns that ratings can change with water levels, and a river's difficulty may change at any point due to fluctuations in water level, downed trees, recent floods, geological disturbances, or bad weather. You can't memorize a rapid and assume it'll be the same next week.

My recommendation is simple: treat every Class III and above rapid as if a swim is possible, because it is. Wear your PFD. Carry a throw bag. Know the signals. And if you're leading a trip, set the tone on day one. The 87% statistic isn't about other people. It's about the guy who thought he didn't need a life jacket for a 'calm' stretch. Don't be that guy.

Sources

• USCG 2024 Recreational Boating Statistics - https://www.uscgboating.org/library/accident-statistics/Recreational-Boating-Statistics-2024.pdf
• American Whitewater - https://www.americanwhitewater.org
• International Scale of River Difficulty - https://en.wikipedia.org/wiki/International_Scale_of_River_Difficulty
• IRF River Signals - https://internationalrafting.com/wp-content/uploads/2020/05/GTE-TRV-River-Signals.pdf
• NPS Obed Paddling - https://www.nps.gov/obed/planyourvisit/paddling.htm
• USCG Boater's Guide - https://www.uscgboating.org/assets/1/AssetManager/Boaters-Guide-to-Federal-Requirements-for-Receational-Boats-20231108.pdf