Today TU is a national organization with more than 140,000 volunteers organized into about 400 chapters from Maine to Montana to Alaska. This dedicated grassroots army is matched by a respected staff of lawyers, policy experts and scientists, who work out of more than 30 offices nationwide. These conservation professionals ensure that TU is at the forefront of fisheries restoration work at the local, state and national levels.
The organization remains committed to applying "the very best information and thinking available" in its conservation work and has developed cutting-edge tools such as the Conservation Success Index (CSI), a sophisticated framework for assessing the health of coldwater fish species throughout their native range. Whether this range encompasses a few hundred miles or multiple states, the CSI helps the organization target its efforts toward those populations most in need of protection or restoration.