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Colorado River Basin Climate P a l e o • P r e s e n t • F u t u r e

Summary

The Colorado River has historically been an abundant source of supply for water users in the United States and Mexico. With growth of demands on this water supply, the time of historical abundance has ended. The previous five years of drought remain manifested in low reservoir levels. The Secretary of the Interior is beginning preparation of first-ever shortage criteria for the reservoir system. These conditions demonstrate the need for a strong scientific foundation in understanding climatic and hydrologic conditions that influence Colorado River water supplies. We know that droughts will inevitably occur in the future – a future made more uncertain by the impacts of climate change and increased hydrologic variability. Uncertainty [...]

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  • Upper Colorado River Basin

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