More than 40 million people depend on the Colorado River Basin for their water,
including 30 federally recognized Tribal Nations; 150 threatened species depend on the river for their survival; and 70% of native fish species in the basin are found nowhere else on Earth.

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The Colorado River is one of the hardest working rivers in the West. The Nature Conservancy is working hard across the entire Colorado River Basin to protect this amazing river and resource.