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980 9 TH STREET, SUITE 1500 
(916) 445-5511

Meeting and Workshop Location: 
Park Tower, Second Floor Conference Room 
980 9th Street 
Sacramento, California 95814

January 10 & 11, 2019
9:00 am to 4:45 pm

Teleconference Location: 
2406 Lalor Road 
Oregon, Wisconsin 53575
Meeting will be webcast at
Webcast signal may be intermittent due to internet infrastructure at the meeting location.

GoalTo conduct a broad review of the methods and approaches to estimate water supply reliability and the organization of these estimation efforts within California; to identify issues and challenges; and to define potential future considerations for California‘s Delta water uses (see prospectus for more information).

ImpetusThe Delta Independent Science Board (ISB) is legislatively mandated to review science activities in the Sacramento-San Joaquin Delta that supportsmanagement. Past reviews include water quality and fish and flows research in the Delta. The Delta ISB is now undertaking a review on water supply reliability estimation.
Workshop Check In/Registration: 8:30 am to 9:00 am
Due to the interactive nature of the workshop, pre-registration is encouraged (see registration form). Please register by January 4 to help with workshop planning.

Questionnaire: To help inform the workshop discussion, attendees should fill out the pre-workshop questionnaire. It will be most useful to the Delta ISB if you complete the questionnaire by 5:30 pm on January 4. However, the Delta ISB will consider all responses received until January 25 for the review itself.

Morning, January 10:

I. 9:00 am - Introduction and Objectives
II. 9:15 am - Regulatory aspects and statutory expectations of water supply reliability estimation (Tina Cannon Leahy—State Water Resources Control Board)
III. 9:35 am - Methods currently used by agencies and others to estimate water supply reliability
 a. Group 1 (State and Federal Agencies):
  i.(1) Aaron Millier (DWR), (2) Erik Reyes (DWR), (3) Mohammad Rayej (DWR), (4) Ajay Goyal (DWR), and (5) Scott Ligare (SWRCB)
 b. Group 2 (Water Utilities):
  i.(1) Ben Bray (East Bay Municipal Utility District), (2) Samantha Greene (Santa Clara Valley Water District), (3) Jeff Quimby (Contra Costa Water District), (4) Russ Freeman (Westlands Water District), and (5) Jennifer Nevills (Metropolitan Water District of Southern California)
 c. Group 3 (Consulting Firms):
  i.(1) Walter Bourez (MBK), (2) Andy(3) Chuck Young (SEI), and (4) Sujoy Roy (Tetra Tech) Draper (Stantec),
 d. Group 4 (Academic Practice and Environmental Considerations):
  i.(1) Josue Medellin-Azuara (UC Merced), (2) Mustafa Dogan (UC Davis), (3) John Cain (American Rivers), and (4) Julie Zimmerman (The Nature Conservancy)
IV.12:20 pm Working lunch with discussion of current methods
Over lunch, workshop participants will discuss major issues and challenges identified in the presentations at their assigned tables. Each table will be assigned a discussion leader and a Delta ISB member will join one of the discussion tables.

Afternoon, January 10:

V. 1:15 pm Summary of major issues and challenges identified during working lunch
The discussion leader (or the ISB member) for each table will briefly (<5 minutes) summarize the lunch discussion. 
VI. 1:50 pm Plenary discussion of potential factors to add to modeling and estimation 
Based on the workshop discussion and the pre-workshop questionnaire, the Delta ISB moderator will share some of the key factors identified that should be added to the modeling and estimation efforts. The moderator will share each factor, briefly describe why it needs to be added, and ask the workshop participants if the factor should be added to their current modeling and estimation efforts.
VII. 2:35 pm Plenary discussion of priorities for research and technical work
The Delta ISB moderator will share some of the big science and technical research questions identified in the pre-workshop questionnaireresponses and the workshop discussion. Afterwards, the moderator will ask the workshop participants on if there are big science and technical questions that need to be addressed and to identify which questions are of the highest priority.
VIII.3:00 pm  Break
IX. 3:15 pm Plenary discussion of potential institutional collaborations, analysis expectations, and value of standards
X. 3:45 pm Concluding panel discussion of directions to improve analyses
Panelists include Allison Febbo (State Water Contractors), Rob Tull (Jacobs Engineering), Tara Smith (DWR), Ben Bray (EBMUD)Julie Zimmerman (The Nature Conservancy), and others. Panelists will share their key take home messages from the workshop and/or present ideas for directions to improve analyses.
XI. 4:45 pm  Closing Remarks/Adjourn

  • If you have any questions, please contact Edmund Yu at 916-445-0637 or
  • Members of the public shall be provided an opportunity to address the Delta ISB on any agenda items except closed session items and those items for which the public has already been afforded such opportunity at an earlier meeting. In addition, comments during the Public Comment period shall be limited to matters within the Delta ISB’s jurisdiction and not on the agenda. Reasonable time limits may be established for public comments (Government Code Sections 11125.7).
  • Members of the public are encouraged to visit the Delta ISB website at to print the background meeting materials. A limited number of copies of these materials will be available at the meeting. 
  • If you need reasonable accommodation due to a disability, please contact the Human Resources Office, Delta Stewardship Council at (916) 445-5511, TDD (800) 735-2929.
  • Note that the Delta Stewardship Council, which provides staff services to the Delta ISB, is under ex parte communication restrictions with regard to the Smith Canal Gate Project, and cannot discuss the project with anyone outside of the Council, which includes the Delta ISB. The Delta ISB is independent of the Council and is not under ex parte restrictions