Watershed Cartography is Fascinating

I have always been fascinated by maps.  From the road maps I used until GPS navigation became common to the topographic maps we used for land navigation in the service.

These maps by Hungarian cartographer Robert Szucs are works of art.

Spread-eagled across the central part of the United States, the Mississippi's drainage basin covers all or parts of 32 U.S. states (and two Canadian provinces). The easternmost point of Ol' Man River's catchment area is really far east: Cobb Hill in northern Pennsylvania. Here rises the Allegheny, tributary of the Ohio, which in turn flows into the Mississippi at Cairo, Illinois. Image: Grasshopper Geography

See more: The world's watersheds, mapped in gorgeous detail