Writing this in Jan 2014, I have to report that the current Charity Navigator rating for SUWA is 4 stars, the maximum. SUWA is wonderfully active and effective in its efforts to preserve the uniquely gorgeous and inspiring scenery and wilderness status of Utah's natural wonders from so many varied governmental and commercial assaults. No other organization has this specific and necessary focus. Especially if you have ever traveled through any part of scenic southern Utah and been inspired by its beauty, do not hesitate to support this grassroots organization of truly dedicated people.
I'm a former employee of the Bureau of Land Management, and I've seen SUWA doing effective work both on the ground in Utah and in Washington DC. They have organized grassroots support in Utah and around the country for protection of the outstanding Utah canyon country managed by BLM. The results so far include establishment of the Grand Staircase Escalante National Monument and identification by BLM of millions of acres that meet wilderness criteria. The big task ahead is to persuade Congress to give permanent protection to those lands as wilderness.
Review from CharityNavigator
This group remains committed to protecting the wildlands of Southern Utah from off-road vehicle abuse and energy development. They promote a wilderness bill in Congress, America's Red Rock Wilderness Act, which would designate 9.5 million acres of federal public land in Utah as wilderness. Their legal and grassroots work to protect the lands proposed for wilderness.