I was thinking it was going to be a deep puddle, lol! That wasn't that bad. If it was your first then it probably took you by suprise. LOL! I have gone through under passes that tend to fill when it rains, about up to the chain. That sucks.... but I try to avoid going deeper because I don't know how well this thing breathes with that much water going up in front.
At the beginning of the vid I thought "What a beautiful day, how is it that he found any decent amount of water anywhere" Then you took a bend at 3:30 and I was like..oh, there's the clouds...lol