Below are some links to organizations that the UWC actively supports.

 

Utah Rivers Council, http://www.utahrivers.org/
The URC protects rivers in Utah.  They've stopped several unneeded dams from being built and are currently working on Wild and Scenic Status for some of Utah's Rivers.

Idaho Rivers United, http://www.idahorivers.org/
IRU protects rivers in Idaho.  Besides stopping several dams on good whitewater rivers they worked with American Whitewater to help get river flow days for the Black Canyon of the Bear River.  In 2009 they obtained Wild & Scenic Status for the Jarbridge/Bruneu Rivers (class IV), and several sections of the Owyhee River. (class II to V)

Snake River Fund, http://www.snakeriverfund.org/  
The Snake River Fund protects the Snake River in Wyoming and all it's headwater streams.  Thanks to the fund, we avoided a permit lottery system for Alpine Canyon.  In 2009 they obtained Wild & Scenic Status for Alpine Canyon on the Snake as well as a number of the headwater streams including rivers we kayak like Granite Creek, Hobach River, and the Gros Ventre River.

American Whitewater, http://www.americanwhitewater.org/
American Whitewater works on river access, safety, and preservation issues across the US.  They defined the river safety classification system we use, helped obtain access to the Black Canyon of the Bear, and have worked on a wide range of other issues.  They also have an excellent river database if you are curious about any new river stretches you haven't visited.

American Canoe Association, http://www.acanet.org/
The ACA provides the insurance the club uses, and trains and certifies paddling and water safety instructors.