I shared this in a reply recently but thought the information and maps might be neat on my main timeline...

Here is one of my favorite maps showing water ways (attached), the coloring is significant.

Each unique color represents a watershed, that is each color all drains out in the same direction and to the same point, ultimately draining to a single outlet into an ocean. You can always get from any point in the same color to any other point.

WRT a waterway which connects from ocean to ocean that would occur anytime there is a point that sits between two colors, almost always a lake, that drains off into each color in different directions. These lakes are special in the sense that they are the relatively rare waterways that belong to two or more watersheds.

#Nature #Rivers #water #watersheds #science @Science