The next major water project in New Mexico could be diverting the last free-flowing river in New Mexico, the Gila River. New Mexico Voices for Children became the latest group to criticize the diversion, saying the amount of money spent on it could better be spent in other ways in the state, citing a potential $1 billion cost. The cost of a diversion plan are highly debated. Some say that it would cost $330 million, others that it would cost $1 billion. When the Interstate Stream Commission voted to move ahead on the diversion, opponents of the plan pegged the cost at between $575 million and $1 billion.