How to Prepare for a River Crossing and When Not to Attempt One

Safety · Overlanding and road trips · 2 min read · Researched guide · Last updated 2026-10-23

In short: The safest river crossing is the one you do not attempt. Never cross fast, deep, rising or unknown water. If you must cross a shallow, known crossing, check the depth against your vehicle's wading limit, move slowly and steadily, and keep an exit plan.

Quick facts

When not to attempt a crossing

• The water is fast, deep, muddy or rising.
• It has rained upstream, even if the sky above you is clear.
• You cannot see or test the bottom, or it is rocky or soft.
• It is dusk or dark, or you are alone with no help nearby.
• Your vehicle's wading limit is lower than the water depth.
• You are not sure. Wait, find another route or turn back.

If the crossing is shallow and known

• Get out and assess the crossing on foot only if it is safe to do so, away from current.
• Compare depth with your vehicle's maximum wading depth.
• Plan the entry, line and exit; avoid rocks and soft banks.
• Drive in a low gear at a slow, steady pace, without stopping or stalling.
• Do not change gear mid-crossing, and avoid sharp turns.
• Test brakes after the crossing and let them dry.

If the vehicle stalls or floats

Do not try to restart an engine that has taken in water; it can cause severe damage. Leave the vehicle early if the water is rising or moving, keep your seat belts and doors in mind, and call 112. People can be swept away in water much shallower than expected.

After the crossing

Check for water in fluids and filters, dry the brakes and inspect air intakes. Insurance may not cover water damage if you drove into floodwater, so check your policy. Related reading: weather forecasts before a mountain trip and recovery points and straps.

Frequently asked questions

Read next

Rules, closures, fees and conditions change. Confirm with the relevant authority before you travel, and treat this guide as planning help, not a substitute for local advice.