Paddling

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.
www.allaboutrivers.com/

Grand Canyon Private Boaters Association - Forum for the Grand Canyon independent river runner.
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.
www.gcrg.org/

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

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