2025 Urban Water Management Plan

Section 3 EXPECTED OUTCOMES FOR REDUCED RELIANCE ON THE DELTA Zone 7 Water Agency Reduce Reliance on the Delta 10 DRAFT | April 2026 3 EXPECTED OUTCOMES FOR REDUCED RELIANCE ON THE DELTA As stated in WR P1(c)(1)(C), the policy requires that, commencing in 2015, UWMPs include expected outcomes for measurable reduction in Delta reliance and improved regional self-reliance. WR P1 further states that those outcomes shall be reported in the UWMP as the reduction in the amount of water used, or in the percentage of water used, from the Delta. The following provides a summary of the near-term (2030) and long-term (2050) expected outcomes for Zone 7’s Delta reliance and regional self-reliance based on the assumptions described in the previous section and DWR’s analysis tool. The results show that Zone 7 is measurably reducing reliance on the Delta and improving regional self-reliance, based on the percentage of Zone 7’s water supplies from the Delta Watershed. Expected Outcomes for Regional Self-Reliance  Near-term (2030) – Normal water year regional self-reliance is expected to increase by approximately 35,100 AFY from the 2010 baseline (see Table 3). Conserved water and conjunctive use project water are the major sources of this increase.  Long-term (2050) – Normal water year regional self-reliance is expected to increase by approximately 49,900 AFY from the 2010 baseline (see Table 3). Conserved water and conjunctive use project water are major contributors to this increase, supplemented by Sites Reservoir and local surface water. Expected Outcomes for Percent of Water Supplies from the Delta Watershed  Near-term (2030) – Normal water year reliance on supplies from the Delta watershed is expected to decrease by 40 percent relative to the 2010 baseline (see Table 4).  Long-term (2050) – Normal water year reliance on supplies from the Delta watershed is expected to decrease by 46 percent relative to the 2010 baseline (see Table 4).