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What If California’s Drought Continues?

By Ellen Hanak, Jay Lund, Jeffrey Mount, Peter Moyle ...

California is in the fourth year of a severe, hot drought—the kind that is increasingly likely as the climate warms. Although no sector has been untouched, impacts so far have varied greatly, reflecting different levels of drought preparedness. Urban areas are in the best shape, thanks to sustained investments in diversified water portfolios and conservation. Farmers are more vulnerable, but they are also adapting. The greatest vulnerabilities are in some low-income rural communities where wells are running dry and in California’s wetlands, rivers, and forests, where the state’s iconic biodiversity is under extreme threat. Two to three more years of drought will increase challenges in all areas and require continued—and likely increasingly difficult—adaptations. Emergency programs will need to be significantly expanded to get drinking water to rural residents and to prevent major losses of waterbirds and extinctions of numerous native fish species, including most salmon runs. California also needs to start a longer-term effort to build drought resilience in the most vulnerable areas.

blog post

Managing Tough Trade-offs in the Delta

By Ellen Hanak, Jeffrey Mount

New data illustrate the tough trade-offs California faces in managing water in the Sacramento-San Joaquin Delta.

blog post

Drought Watch: Water for the Environment

By Jeffrey Mount, Emma Freeman

This is part of a continuing series on the impact of the drought.

Most of what we call "environmental" water is simply too remote for people to use—or is actually reused for irrigation, drinking water, or other human benefits.

Report

Comparing Futures for the Sacramento-San Joaquin Delta

By Ellen Hanak, Jay Lund, William Fleenor, Jeffrey Mount ...

For over 50 years, California has been pumping water through the Sacramento-San Joaquin Delta for extensive urban and agricultural uses around the state. Today, the Delta is ailing and in urgent need of a new management strategy. This report concludes that building a peripheral canal to carry water around the Delta is the most promising way to balance two critical policy goals: reviving a threatened ecosystem and ensuring a reliable, high-quality water supply for California.
 
More information can be found in the following supporting appendices:

Appendix A. Policy and Regulatory Challenges for the Delta of the Future

Appendix B. Levee Decisions and Sustainability for the Delta

Appendix C. Delta Hydrodynamics and Water Salinity with Future Conditions

Appendix D. The Future of the Delta Ecosystem and Its Fish

Appendix E. Expert Survey on the Viability of Delta Fish Populations

Appendix F. The Economic Costs and Adaptations for Alternative Delta Regulations

Appendix G. Peripheral Canal Design and Implementation Options

Appendix H. Delta Drinking Water Quality and Treatment Costs

Appendix I. The Economic Effects on Agriculture of Water Export Salinity South of the Delta

Appendix J. Decision Analysis of Delta Strategies
 
 
 

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