The federal agency charged with managing the Colorado River failed to do its job properly when it excluded a viable option presented by Nevada, Arizona and California, according to documents that surfaced Friday. The three states that make up the Lower Basin are fighting a critical war for their rights to water from the river. The future of growing cities is in the balance, along with farms, businesses and everyone else in the desert Southwest. On Friday, a Feb. 13 letter to incoming Interior Secretary Doug Burgum was obtained by 8 News Now, along with a supporting document that argues the U.S. Bureau of Reclamation is making a big mistake by refusing to address a known problem with Glen Canyon Dam, which creates the nation’s second-largest reservoir, Lake Powell.