The number one rule here is that if there’s another way or route to get around that flooded portion or area, then by all means avoid it. Not only does it prevent your car from being submerged in water, but also decreases the risk of potential damage.
Should you attempt to go through a flooded street, here are some things worth considering before wading through.
How high and deep
Familiarize yourself with your vehicles ground clearance, and the depth. The space between the ground and the lowest portion of the car is the ground clearance while the depth is the deepest water level that your car can traverse without damaging the engine or other components such as the ECU or the air filter.
Observe other Motorists
Before attempting to wade through a flooded street, take note of other cars first.
If an average sedan manages to go through, it shouldn’t pose as a problem for most cars. But the moment pickups and SUV’s start backing up; it’s a sure sign that it’s impassable.
How to drive through a flood
Drive steadily and do not stop.
One at a Time
Time your crossing to when there is no oncoming traffic, as they could generate a wave that would be dangerous for oncoming cars.
Choose a gear that will prevent you from stalling mid way through the flood; generally it’s second gear whether you’re driving an automatic or a manual.
Slow and Steady
Drive slowly and steadily all throughout, applying steady pressure on the throttle to maintain an ideal speed; (10-15 km/h) if the water is deep enough, your vehicle’s bumper will create a bow wave and this is what you must follow.
Do not stop until your vehicle clears the flood. Chances are water will slosh around the underside of your vehicle; it’s an eerie sensation, so it’s vital that you do not panic and lift off the throttle.
After crossing the flood, check your vehicle and the engine bay for any potential damage or debris lodged inside. This also gives the brakes a chance to dry down.