Environmental groups push for removing Colorado River dam

FLAGSTAFF, Ariz. (AP) — Environmental groups that have long pushed to bring down a huge Colorado River dam along the Arizona-Utah border are suing the federal government.
They say in a lawsuit filed Tuesday in U.S. District Court in Arizona that the U.S. Bureau of Reclamation ignored climate science when approving a 20-year operating plan for Glen Canyon Dam. The dam holds back Lake Powell, one of the largest man-made reservoirs in the country.
Powell and Lake Mead are key to delivering Co