Delta conveyance – California Water Library

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Determination Regarding Appeals of the Certification of Consistency by the California Department of Water Resources for California WaterFix

Delta Stewardship Council (Delta Council) | November 8th, 2018

Summary

For background and associated materials, go to the Delta Stewardship Council

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DISB Review of Bay Delta Conservation Plan/California WaterFix Partially Recirculated Draft EIR/EIS

Delta Stewardship Council (Delta Council) | October 1st, 2015

Summary

We have reviewed the partially Recirculated Draft Environmental Impact Report/ Supplemental Draft Environmental Impact Statement for the Bay Delta Conservation Plan/Calif

We have reviewed the partially Recirculated Draft Environmental Impact Report/ Supplemental Draft Environmental Impact Statement for the Bay Delta Conservation Plan/California WaterFix (herein, "the Current Draft"). We focused on how fully and effectively it considers and communicates the scientific foundations for assessing the environmental impacts of water conveyance alternatives. The review is attached and is summarized below. The Current Draft contains a wealth of information but lacks completeness and clarity in applying science to far-reaching policy decisions. It defers essential material to the Final EIR/EIS and retains a number of deficiencies from the Bay Delta Conservation Plan Draft EIR/EIS. The missing content includes: 1. Details about the adaptive-management process, collaborative science, monitoring, and the resources that these efforts will require; 2. Due regard for several aspects of habitat restoration: landscape scale, timing, long-term monitoring, and the strategy of avoiding damage to existing wetlands; 3. Analyses of how levee failures would affect water operations and how the implemented project would affect the economics of levee maintenance; 4. Sufficient attention to linkages among species, landscapes, and management actions; effects of climate change on water resources; effects of the proposed project on San Joaquin Valley agriculture; and uncertainties and their consequences; 5. Informative summaries, in words, tables, and graphs, that compare the proposed alternatives and their principal environmental and economic impacts. The effects of California WaterFix extend beyond water conveyance to habitat restoration and levee maintenance. These interdependent issues of statewide importance warrant an environmental impact assessment that is more complete, comprehensive, and comprehensible than the Current Draft.

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DISB Review of the Final EIR/EIS for California WaterFix

Delta Stewardship Council (Delta Council) | June 19th, 2017

Summary

The Delta Reform Act of 2009 directs the Delta Independent Science Board to review environmental impact assessments of the Bay Delta Conservation Plan (now California Wat

The Delta Reform Act of 2009 directs the Delta Independent Science Board to review environmental impact assessments of the Bay Delta Conservation Plan (now California WaterFix). Here, in our fifth such review, we focus on the adequacy of the scientific information presented in the final Environmental Impact Report (EIR)/Environmental Impact Statement (EIS) for the California WaterFix by revisiting the six main concerns we raised in our September 2015 review of the Recirculated Draft EIR/Supplemental EIS. We discuss improvements and shortcomings. We also comment on the need to improve impact assessments for scientific evaluation and effective stakeholder engagement. The Final EIR/EIS contains a wealth of detail and considerable insight. This version improves on its predecessors but retains some persistent shortcomings. Improved content on adaptive management is still short on detail about how adaptive management would be implemented under changing and uncertain conditions. Summaries and comparisons, more abundant than before, lack insightful syntheses and graphics that ease comprehension of the vast amount of material presented. Expanded discussion of Delta levees stops short of evaluating interactions with water supply reliability and neglects changing views of earthquake hazards. Long-term effects are better addressed in several ways, but with insufficient attention to uncertainties in defining the No Action Alternative and to the interplay between California groundwater sustainability and Delta water supplies. Other content missing includes evaluation of environmental effects of water use south of the Delta. Evaluation of ecosystem impacts, though extensive, retains gaps on using restoration as mitigation. The completion of our reviews of the Final EIR/EIS and its predecessors prompt us to reflect more broadly on the use and communication of science in the Delta and more specifically on the false trade off between thoroughness and intelligibility that has become common in environmental impact assessments. Overwhelming readers with content that addresses the many scientific issues related to a proposed project and its alternatives, while neglecting the thoughtful presentation and synthesis of insights and performance trade offs among alternatives, diminishes the value of this important document as a comparative guide to the expected environmental effects of the alternatives considered.

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Drought Contingency Planning (DCP) Negotiation #142, Attachment 1

California Department of Water Resources (DWR) | April 30th, 2020

Summary

This white paper describes current understanding of how the Department of Water Resources (DWR) would account for and administer the Delta Conveyance Facility (DCF) Bene

This white paper describes current understanding of how the Department of Water Resources (DWR) would account for and administer the Delta Conveyance Facility (DCF) Benefits. DWR will include information regarding the accounting and administration of water attributable to DCF in relevant Notice(s) to State Water Project Contractors consistent with prior practice. No legally binding obligations are created by this white paper. This white paper may be updated from time to time by DWR, in consultation with the Public Water Agencies (PWAs), in response to factors including, but not limited to, changes in laws, regulations or permits applicable to DWR and/or the State Water Project (SWP). Capitalized terms not defined herein shall have the meanings ascribed to them in the DCF Agreement in Principle (AIP).

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