The document summarizes a presentation given to the Board of Directors of the San Diego County Water Authority. It discusses the importance of the Bay-Delta region as a water source for San Diego County and the risks it faces. It then outlines San Diego County's strategy to diversify its water supply sources through investments in imported water transfers, local supplies like recycling and groundwater, and desalination. Charts show how these diversification efforts have increased the county's water supply reliability since 1991.