California remains a holdout on a drought emergency plan for the Colorado River that is due next Tuesday by all seven river states. Holding up the plan has been a fight between two powerful water agencies in Southern California. The drought contingency plan is designed to produce voluntary cuts that would keep the river and Lake Mead from reaching critically low levels. If the plan doesn’t get finalized, the federal government could step in and force mandatory cutbacks instead of voluntary ones for a river that serves 40 million people and some 5 million acres of farmland.