Not available – first paragraph follows: It has been said that the Colorado River is the most litigated, regulated, and argued-over major river in the world. The river provides irrigation water to 1.5 million acres within the seven states of Colorado, New Mexico, Utah, and Wyoming (Upper Basin) and Arizona, California, and Nevada (Lower Basin). More than half of this acreage is in California. The river also furnishes a full or supplemental supply of municipal and industrial water to 17 million people. The Republic of Mexico receives water from the river to irrigate 0.5 million acres of farmland and supply 0.5 million inhabitants.