This is a ready-to-use simulation that has high school students portraying all of the key players that decide how water from the Colorado River will be allocated. Students act as judges, lobbyists, news analysts, and even protesters during a mock water conference. Water supply is promised beyond nature's delivery, so the problem is real and will probably intensify in light of global climate change forecasts. The simulation addresses several geography standards. (Contains 3 tables, 3 figures and 2 notes.)