All About Rivers.com
   Information and streamflows for selected rivers, mostly in the western states. Gear swap, list of commercial outfitters, and links to manufacturers and associations.
   http://www.allaboutrivers.com/

Grand Canyon Private Boaters Association
   Forum for the Grand Canyon independent river runner.
   http://www.gcpba.org/

Grand Canyon River Guides
   Non-profit organization of professional river guides, passengers, private boaters and assorted river and canyon afficcionados. Purpose is to protect the Grand Canyon, set high standards for the river profession, and celebrate the unique spirit of the rive
   http://www.gcrg.org/

Northeastern Whitewater USA
   Links to weather, gauges, outfitters and other paddle related resources.
   http://home.ptd.net/~ab257/

Whitewater at Hiker Central
   Information and resources on whitewater paddling.
   http://www.hikercentral.com/whitewater