Does anyone know if and where the H3 cowl drains are located?

 

Not sure I would call them a drain, there is an intentional gap at the left and right ends towards the back so that water drains out going down to the rear of each front fender and in front of the front doors. Small leaves and all kinds of stuff falls down through there.

 

Remove the cowl upper panel(#1) to inspect lower cowl(#11) drains: