As far as I know, Narcissus (or however it's written in English) did not drown. There are a few versions of this myth, but none says about drowning. Instead, Ovidius says, Narcissus after watching himself in the stream was so insensible for everything that he died. On the other hand, the Beotian version says tha he comitted siucide. And this is, I think, the most popular release.
That would be all for the sake of commentary, as we say in my country (to tell truth it sounds terribly in English :-/).

sorry for my laziness ;) Poland is the country.