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How to cross rivers safely

Crossing rivers is often the riskiest element of a typical hiking or backpacking trek. Even a midsized stream has the power to potentially knock you off your feet. River crossings must be undertaken with an abundance of caution and sharp-eyed study, and often the correct decision is not to cross at all.

We know a lot of your Mountain House lovers out there are avid hikers and backpackers who are likely to run into at least a modest-intensity river crossing on occasion, so we thought we’d run a refresher article on river safety tips!

The First Step in River Safety: Should You Even Try Crossing It?

As Marni Goldenberg and Bruce Martin note in the Wilderness Education Association’s Hiking and Backpacking, a solo hiker should be leery about trying to cross a river that’s deeper than his or her mid-calf. A group of hikers are often able to safely cross water as deep as mid-thigh. That’s a general guideline: You need to make the call based on the current conditions of the river and your own physical capabilities and experience. A major takeaway, though, is that it’s always safest to cross in groups; crossing any decent-sized river on your own is dangerous, though a reality for many solo adventurers of course.

Keep in mind that a river fed by snowmelt or glacial ice will, all else being equal, be running lowest in the morning and highest in afternoon and early evening. So try to schedule your crossing for early in the day, and if you reach the riverbanks too late in the day and the current looks too muscular, hold off and cross the next day.

On this count, too, it’s worth emphasizing some backcountry common knowledge: Rivers often run intimidatingly and often impassably strong in spring or (in mountain country) early summer when the snowpack’s melting off. When planning a hike, remember this simple truth and keep in mind many trails are only safe to attempt later in the season, post-thaw.

You might also hit a river that’s swollen from precipitation. You don’t want to cross such a charged-up flow, but if your timetable allows you can wait and see if water levels fall and conditions improve to the point where you can safely ford.

River Safety: Where to Ford?

If you can avoid it, don’t cross at a riverbend: Here the river is actively cutting on its outside corner, which often therefore has unstable banks, a deep and swift channel, and wedged logs or overhanging trees; the riverbed at these bends will be uneven, too, upping the challenge of fording. Straightaways between bends are usually the best spots.

Don’t “blindly” cross a river where the trail does or where cairns or blazes indicate. Hopefully, these are the best places to ford, but river conditions fluctuate (as does the alluvial landscape itself), so you should scout around the area in case there’s a safer crossing up- or downstream of the designated one.

Ideally, you’ll cross where the river is broad and shallow with relatively level footing, and where it’s easy to wade into and out of the water. River narrows or chutes aren’t usually good crossing points (unless you can safely jump ’em) because here the current is swiftest and deepest. You also don’t want to cross above big rapids, waterfalls, or logjams; if you lose your footing you might be swept downstream into these danger zones.

It’s best to cross where the water’s fairly clear so you can see the substrate and get a visual sense for depth; also, as we alluded to above, opaque water commonly indicates an especially strong and vigorous flow primed by rainfall or meltwater. But otherwise you cansafely cross muddy or silty water in many cases if you use caution and probe for changing depth or underwater obstacles with your trekking pole.

You can also get a rough estimate of the depth of the channel by tossing a good-sized stone into the flow and listening to the sound of the splash.

Your exit point should be clear of obstructions such as logs or heavy shrubbery, and it should lie downstream of your entry point so that you can angle across with a bit of help from the current.

River Safety: How to Cross

Before crossing a river, place your clothes, sleeping bag, and as many other items as you can in waterproof sacks within your pack in case you do take a dunk. Mountain House pouches are waterproof and they can be reused for storing small items. Unbuckle your chest strap and hip belt: You want to be able to quickly jettison your pack if you fall into the water. This is super-important.

Though some people cross streams barefoot or in sandals, it’s better to do so in a closed-toe shoe or boot so you protect your feet from cuts. You might consider, though, ditching your socks for the crossing so you can put them on dry on the other side. Tight-fitting leggings or (in warmer water) shorts, even underpants, make preferable river-fording outfits than baggy pants, which drag in the current.

If you’re crossing alone, face upstream and cross sideways, leaning into the current with your trekking pole and shuffling with short, dragging steps. Always keep at least two points of contact with the riverbed: in other words, keep one foot and the tip of your pole braced on the bottom while taking a step. Move steadily, but if you hit unexpectedly deep water or feel the current is stronger than you anticipated, turn back.

Don’t stare at the nearby river surface while crossing: That’s a good way to get disoriented or even induce vertigo. Look well upstream or at the opposite shore; you’ll likely be glancing between those two points regularly to gauge your progress anyhow.

Two hikers may cross side-by-side with linked arms, or facing while grasping one another’s shoulders or arms. Groups of three or more may consider crossing in a line holding onto one another’s shoulders, with the strongest hiker upstream, bracing with a trekking pole as in a solo ford; this person takes the brunt of the current and creates a helpful eddy for the people behind, who in turn help support the leader.

Three or more hikers may also form a ring with hands on shoulders and cross in a rotating fashion, or in a triangular wedge with (again) the strongest person upstream.

Will that river kill me if I try to cross it? Den Mother helps you assess fast-moving waters.

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‘Illustration by Brett Affrunti’

The waterways around here are still pretty high. How can I tell if they’re safe to cross—and then, how do I do it? –Jack McMasters

There are three main factors to figuring if you should ford: speed, depth, and obstacles.

Speed is the simplest one to gauge. Throw a stick in the water and try to walk alongside it. If it races away, the river is too fast.

Depth is a little trickier. Generally speaking, avoid crossing moderately swift water that’s deeper than mid-thigh. Err on the side of caution when you estimate depth. You might have to turn back after testing the proverbial waters.

Finally, obstacles: Avoid crossing upstream of downed trees, which can hold you underwater if you fall and get hung up in one, or waterfalls.

If your spot doesn’t meet all of these criteria, look elsewhere for wider areas where the water is generally slower and shallower. If there’s been a recent storm, wait 24 hours.

Ready to cross? Unclip all pack straps. Don water shoes if you’ve got them, but if you don’t, leave your boots on. This is no place to slip.

Solo hikers should use a stick or trekking pole, face upstream, and cut a diagonal path against the current. More people means more stability. Groups of two should put hands on each other’s shoulders and cross sideways with the stronger hiker’s back to the current.

Groups of three can all put hands on each other’s shoulders and cross in a triangle formation. Larger groups can form a conga line with the strongest hiker in front and the next strongest in the back.

If you do end up in the drink, shed your pack, point your feet downstream, and paddle like hell for shore.