It's a common mistake to think that rivers fork. We see that shape all the time, after all. But what they're really doing is joining together, not splitting apart. A river might fork temporarily during a flood, but it will very quickly choose one channel or the other, usually within a matter of hours. The same goes for lakes: one outflow only, although they can have any number of sources. If you do a search for "How to get your rivers in the right place" and/or "Essential river guidelines for mapping," you'll get more information on the topic than you could ever have wanted.

I actually kind of like the typeface, although it's crude in comparison to the obviously skillful draughtsmanship of the map's symbols.