True that. But when the military conducts corrosion tests, don't do a river water spray test, they do a saltwater spray test. Something about the salty water makes the corrosion worse somehow.

And when people buy cars and trucks that have been up north in the snowy winter hellscapes, they have to pay special close attention to the underside of the vehicle, because the road salt is known for absolutely wrecking frames and suspension components. It's widely accepted that it's the road salt that does it. Every car in the US sees rainy/wet roads, but none of them rust like the cars in the salt belt.