Just some feedback, while most of the water you can tell the sense of direction, the two branches North of the lake just seem to be vertical rather than in the plane of the rest of the map. I'm not sure if that's because they are drawn over the top of the hex grid while the rest is behind it or what, but that might help a little.
You might want to move the place names in front of the grid though, as it makes it a little irritating to read them as it is.
Overall it looks really good though!