From the Associated Press via The Aspen Times:
Denver Water and the leaders of Grand and Summit counties are set to sign the Colorado River Cooperative Agreement at noon Tuesday in Hot Sulphur Springs. Denver Water and nearly three dozen Western Slope water users announced the proposal last year. Eagle County and its water districts became the first to sign in February. The endorsement of the cities of Rifle and Glenwood Springs and some irrigation districts is still pending.
More Colorado River Cooperative Agreement coverage here.