Whats been posted is normal, they can get a lot worse, its just best be prepared and not splash quickly through the wet sections as you could get the water where you dont want it also you do not know if there are big rocks, drops or sharp slate under the water.
Take things easy and slowly most unmodified trucks will cope very well.
This was not high when we crossed the car wash on this occasion but the guy in the white car simply went into the water too fast and sucked water into his engine (hydro-locked it)









so he can play and I will just jump in with someone!