New Delhi, Aug. 8 -- Summary The Colorado River, a vital water source for millions, faces a crisis as its flow diminishes, prompting states to vie for future water rights.

Arizona's proposal to base water allocation on actual river flows offers hope, but complex negotiations remain.

The river supports agriculture, hydroelectric power and drinking water for major cities, while Native American tribes assert their rights, complicating the situation further.

The Colorado River is in trouble: Not as much water flows into the river as people are entitled to take out of it. A new idea might change that, but complicated political and practical negotiations stand in the way.

The river and its tributaries provide water for about 5 million acres...