Turbo Tero - water drain ?

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Is the little hole near the motor housing meant to be a water drain?

I have ridden my Tero all winter and this spring is muddy and wet, and the conditions i have been riding in created a mud caked bike which i cleaned this weekend.

During the cleaning, i happened to pop the front tire up in order to manoeuvre the bike through a tight spot and a bunch of water came out of that slot.
If it is a drain hole, why would it be so high up (and require the bike to be tilted back so far)?

 

[Ben J]

Is it at about the 1 o'clock position if you face the left crank? My Tero X has a hole there for the taillight wire.