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Future Streamflow and Climate Conditions Are Key

• Vulnerable conditions arise in a majority of scenarios where streamflows are lower than historical averages and where drought conditions persist for eight years or more.
• Depending where the shortages occur, problems will arise for delivery obligations for the upper river basin and the lower river basin. The lower river basin is vulnerable to a broader range of plausible future conditions.
• If future hydrologic conditions develop in a manner consistent with the more pessimistic current projections, the Basin is increasingly likely to face vulnerable conditions. The region may need to consider additional management options.

Additional Investments in Infrastructure and Efficiency Could Improve Performance and Reduce Risk

• Different portfolios of water-supply and demand-reduction options offer performance trade-offs.
• Different types of options in the portfolios, such as conservation, desalination, or water banking, would affect future outcomes and costs of implementation.

Other Solutions May Be Required

• Analysis of all the portfolios identified important near-term, high-priority options that should be implemented in the near future, including municipal, industrial, and agricultural conservation.