-- Last Updated: Oct-25-12 11:38 AM EST --
In looking for some photo sites to link for you, I discovered that the National Geographic ranked the West Branch Water Trail as one of their "Best Wilderness Destinations for 2012".
http://www.susquehannagreenway.org/national-geographic-highlights-west-branch
Might mention also that it has reliable moderate flow, little or no commercial or power boat traffic, and goes through many small towns where you could easily pull out at riverside parks and get a hot meal or re-provision your supplies.
Here's a good shot of the typical winding course of the river, through some of the oldest mountains on the continent, if not the world.
http://www.flickr.com/photos/nicholas_t/7993658068/