That’s not a puddle: monsoon floods and Northern Arizona roads

Arizona Roads & Law

You’ve seen it, if you’ve lived here through a July. The sky over the Peaks goes bruise-purple by early afternoon, the first fat drops smack the windshield, and twenty minutes later a stretch of road you drive every day has a sheet of brown water running across it — moving, carrying sticks and gravel, deeper in the middle than it looks. Your brain runs the quick math: it’s probably fine, it’s only a few inches, the truck can make it.

Turn around. That’s the whole post, and if you close the tab right now having read only that, I’ve done my job. But flooding kills more people in a typical year than any weather hazard in this country except heat, and close to half of those deaths happen to people in vehicles, so let me spend a few minutes on why, because “turn around, don’t drown” is easy to nod at and hard to actually do when you’re late and the water looks tame.

The water is stronger than your truck. It isn’t even close.

The National Weather Service will tell you something that isn’t intuitive. Six inches of moving water is enough to knock a grown adult off their feet. Twelve inches, a foot, less than the height of a curb, will float and carry off a car. Two feet will pick up and move an SUV or a pickup. That last one matters up here, where half of us drive exactly the kind of high-clearance rig that feels invincible right until it’s bobbing sideways down a wash.

Once the water lifts your tires, you aren’t driving anymore. You’re a boat with no steering. That’s the moment people don’t come back from when the truck went light and there was nowhere left to step.

It’s not just the water. It’s the road that isn’t under it.

Even if the water were shallow and still — it isn’t, but say it were — you still can’t see what’s beneath it. Monsoon floods scour roadbeds out from underneath. The pavement you’re counting on may be undercut, cracked, or simply gone, and brown water hides every bit of it. You find out when your front wheels drop into a hole that wasn’t there this morning.

And in our corner of Arizona, there’s a wrinkle that makes all of this faster and meaner: the burn scars.

When the Museum Fire burned the slopes north of Flagstaff in the summer of 2019, it didn’t just take the trees — it took the ground’s ability to drink the rain. Two summers later, in the record monsoon of 2021, water came off that bare scar and tore through the east-side neighborhoods. Sunnyside got the worst of it, along Spruce Wash — a Rio de Flag tributary most people never think about until it’s running down their street. Officials called one of those storms a 200-to-500-year rain event. Then the Pipeline Fire in 2022 reburned much of the old Schultz scar, and the cycle started over: Highway 180 shut down at Sechrist Elementary with water pouring across it, sirens sounding below the Museum scar, the city under a declared state of emergency.

Below a burn scar, a road can go from dry to running in the time it takes one storm cell to park over the mountain and let go. You don’t get the slow, obvious rise. You get a wall. If you live or drive below the Dry Lake Hills or the Schultz area or any of the scars, the Coconino County Flood Control District alerts and those neighborhood sirens are the fastest warning you’re going to get.

The barricade is not a suggestion (and the law agrees)

When the county or a road crew drops a barricade across a flooded road, somebody already made the call that the road is dangerous. Driving around it is a bet that they’re wrong, that your vehicle’s the exception, that the roadbed held. Arizona has a firm opinion about that bet. It’s called the Stupid Motorist Law — really; that’s what everyone’s called ARS § 28-910 since it passed in 1995, and it says that if you go around a barricade into a flooded road and crews have to come pull you out, you can be billed for the rescue, up to two thousand dollars, on top of whatever the car and your pride already cost you. It tends to travel with a reckless-driving citation, too. The name is blunt on purpose. The state got tired of paying to fish people out of washes they chose to drive into.

If it’s already happening

Say you misjudged it, or the water came up around you before you understood what you were looking at. This is the order that keeps you alive.

Don’t push in deeper trying to power through — if the water behind you is still shallow, back out the way you came. If the car stalls and water is rising, get out and get to higher ground now, and leave the car where it sits. I want to be plain about that part, because it fights every instinct you have: the car is insured, replaceable, a thing. You are not. People die in Arizona every single monsoon because they stayed with a vehicle they could have walked away from.

Once you’re on high ground, if someone’s still trapped or the water’s still moving, that’s a 911 call. Swift-water rescue is a fire-department job, not a tow-truck job, and any operator who tells you otherwise is selling something. Our part comes after when the water’s down, the danger’s passed, and there’s a truck sitting where it shouldn’t be, packed full of mud. That’s the easy part of the whole ordeal: a vehicle recovered off a road or out of a wash and hauled to a shop or your driveway, no heroics required.

The call we’d rather not get

Fifty-some years of towing in Northern Arizona means we’ve pulled a lot of cars out of a lot of washes, and those are the recoveries nobody feels good about. Every one of them started the same way: a driver looked at moving water and decided the truck could make it, and ended up paying for it with their lives. Sometimes the tow was the only part left to do.

So this is the one post where I’d rather talk you out of ever needing us. When the sky rolls over the Peaks and the road ahead is temporarily a river, turn around. Take the long way. Be late. Let the wash have the road for twenty minutes, it always gives it back. And once you’re home and dry, if there’s a car still sitting out there in the mud, you know the number.

Sources

  • National Weather Service / NOAA — floodwater depths and vehicles (six inches knocks down an adult, twelve inches floats a car, two feet moves an SUV or truck); flooding among the deadliest U.S. weather hazards; roughly half of flash-flood deaths are vehicle-related; roadbeds may be washed out beneath standing water.
  • ARS § 28-910, the “Stupid Motorist Law” — liability (up to $2,000) for rescue after driving around a barricade into a flooded roadway; enacted 1995; typically charged alongside another violation.
  • Flagstaff post-wildfire flooding — Museum Fire (2019), Pipeline Fire (2022), Schultz Fire (2010) burn scars; 2021–2022 flooding in Sunnyside along Spruce Wash / Rio de Flag; US-180 closures at Sechrist Elementary; Coconino County Flood Control District response. Reported by KNAU, 12 News, the Arizona Geological Survey, and the City of Flagstaff / Coconino County.