SJAFCA's 5 Key Initiatives for Flood Management in San Joaquin County

1. Chris Elias Executive Director May 10, 2019

2. SJAFCA Overview SJAFCA jurisdiction excludes Lodi, Tracy, Escalon, Ripon, and River Islands

3. 2017 CVFPP Facilities

4. 1. LSJRFS Recommended Project SJAFCA’s 5 Key Initiatives Align with CVFPP

5. 2. Smith Canal Gate SJAFCA’s 5 Key Initiatives Align with CVFPP

6. 3. Mossdale Tract Area ULOP Phases 1 - 3 Phase 4 Stockton SJAFCA’s 5 Key Initiatives Align with CVFPP I-5 Lathrop Manteca

7. 4. Additional Improvements to Achieve 200-year ULOP for Stockton SJAFCA’s 5 Key Initiatives Align with CVFPP Augment Flood Storage in New Hogan Reservoir New Hogan Reservoir Bear Creek Mosher Slough Bellota Diversion Calaveras River Stockton Mormon Slough Diverting Canal

8. 5. Systemwide Improvements for ULOP Resilience Over Time SJAFCA’s 5 Key Initiatives Align with CVFPP Stockton San Joaquin River Lathrop Paradise Cut Tracy

9. SJAFCA Climate Change Policy • Incorporation of additional stage at the downstream boundary of the San Joaquin River hydraulic model to cover “intermediate” estimates of sea level rise per U. S. Army Corps of Engineers guidance, plus an additional factor for uncertainty; • The inclusion of some additional measure of stage in levee design. This additional stage will differ in different reaches to be determined by SJAFCA staff based upon input from consultants and partner agencies, but is expected to be in the zero to three-foot range; • Where real estate is being acquired for project improvements (and where land use coordination as described below is not adequate), SJAFCA will acquire the necessary real estate to support potential future levee raises and/or extensions based on the 2017 CVFPP climate change hydrology; • Coordination with relevant land-use agencies in and around current and future levee alignments to ensure approved development can accommodate expanded levee footprints and extended levee alignments; • At least every three years, and more often when the state of the science demands, staff shall review available studies and models and make recommendations to the Board whether this policy needs to be updated. • SJAFCA will request that each land use agency within the Mossdale Tract annually provide to SJAFCA a summary of any findings made toward adequate progress; • SJAFCA will develop cost estimates to provide SJAFCA with necessary resources to further study and evaluate this issue through and after project completion.

10. Key Challenges • Establishing Local funding • Securing Federal and State funding • Strengthening local governance • Will look to utilize a system-wide approach to managing challenges and opportunities in the Basin.