Paddling

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 river community.
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