BOARD AGENDA MEMORANDUM
SUBJECT:
Title
Update on the 2017 Water Supply Master Plan and Potential Storage Options.
End
RECOMMENDATION:
Recommendation
A. Receive information on the updated long-term water supply outlook;
B. Receive and discuss risk assessment results;
C. Discuss the level of service goal;
D. Receive and discuss information on preliminary project and portfolio analyses; and
E. Receive and discuss information on potential storage options.
Body
SUMMARY:
The Board received information on and discussed staff's approach to preparing the 2017 Water Supply Master Plan (WSMP) on September 27, 2016. At the time, staff presented the scope and schedule for preparing the WSMP, draft planning objectives/assessment criteria, and a list of projects that would be considered during the planning process. Since that time, staff has updated the long-term water supply outlook, conducted a risk assessment, developed an alternative scenario against which to evaluate projects and portfolios, defined costs and yields for various projects, began evaluating different portfolios of projects, and convened three expert panel meetings. This memorandum summarizes staff's work since the last Board update on the WSMP, requests Board input on staff work to date, and provides an update on next steps.
Long-Term Water Supply Outlook
One of the first steps in planning is to identify and assess what gaps need to be filled. For long-term water supply planning, this equates to assessing water supply reliability under future demand and supply scenarios and comparing it to a level of service goal. The baseline long-term water supply outlook assumes that retailer demands increase according to the projections in the retailers' 2015 Urban Water Management Plans, the Fisheries and Aquatic Habitat Collaborative Effort (FAHCE) flow and release requirements are implemented according to the FAHCE Settlement Agreement, future imported water deliveries are subject to the same opera...
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