Canada
Dare to compare! not all rafting companies are considered equal! only esprit offers you whitewater rafting on both channels of the ottawa river in the same day.
http://www.espritrafting.com/
Colorado
Colorado
http://www.coloradoraftingguide.com/
Hawaï
Kona hawaii snorkeling cruise - snorkel the big island of hawaii - explore sea caves and lava tubes - watch dolphins and whales
http://www.seaquesthawaii.com/
North Carolina
The nantahala is the most popular north carolina whitewater rafting river in the smokies
http://www.apprivers.com/
USA
Whitewater rafting - find river rafting trips around the world. brought to you by gordon's guide - adventure & active travel.
http://www.whitewateradventures.com/index.cfm?cfid=7580864&cftoken=32231602