Austin Integrated Water Resource Planning Community Task ForceNov. 3, 2021

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Water Forward 2024 Planning Update Updates since May 2021  Continued refinement of scope and technical work related to demographics and demand forecasting  Finalized Climate and Hydrology Analysis scope and developed agreement with UT  Revised Tasks 6, 7, 8, and 9 in alignment with updated methodology (to be discussed) Key methodology changes from WF18  Describing WF24’s relationship to related AW and COA efforts  Clearer approach to water needs identification  Updated characterization of WF18 and new strategies  Better alignment with regional water planning considerations  Development of Equity and Affordability Tool  More robust approach to addressing risk and uncertainty Addressing uncertainty  Deep uncertainty is uncertainty that cannot be predicted or well understood using standard statistical methods • Rather than predicting the most likely future or deriving a plan that performs best on average, deep uncertainty approaches seek robust strategies that perform well across a wide range of plausible assumptions about the future  WF24 changes to address uncertainty • Use of ranges in to define modeling scenarios and strategy yields • Updated approach to portfolio development and evaluation • Development of robust adaptive management plan Define the needs Evaluate potential solutions Select the best solution & implementation strategy Develop modeling scenarios WF18 implementation evaluation and update Preliminary needs assessment Construct 50-yr portfolios for further evaluation 50-Year portfolio trade-off analysis Vulnerability assessment to identify system stressors Preferred 50-yr portfolio Adaptive Management Plan (AMP) Initial WAM reliability and sensitivity analysis Iterative process Identify potential solutions Identify, screen, and characterize additional WMS Based on preliminary needs, develop strategy setup for sensitivity analysis s e m o c t u O Updated WF18 strategies and range of baseline needs Strategy setup for WAM sensitivity analysis Evaluated 50-year portfolios and identified system stressors Water Forward 2024 Plan and equity and affordability analysis Water Forward 2024 (WF24) Project Plan Task 1 - Project Management Task 2 - Community Engagement Task 3. Refine planning methodology Task 4. Forecast baseline water demands Task 6. Identify water resource needs Task 7. Identify, screen, and characterize strategies Task 8. Develop and evaluate 50-yr water resource portfolios Task 5. Update climate and hydrology analysis Task 9. Develop plan recommendations and 100-yr adaptive management plan 1/2022 1/2023 1/2024 Task 2: Community Engagement  Key Deliverables: • Updated mission statement, guiding principles, plan objectives • Equity and Affordability Roadmap • Education and Engagement Plan  Anticipated community engagement touchpoints • May 2021 – gathering input on community values • Winter 2022 – gathering input on water management strategies Task 2: Community Engagement  Community Ambassadors • Open Application (November 8th-January 7th)  “Water Forward University” • Introduction series • Overview of Water Resource Planning  Equity Grounding • Review mission, guiding principles, and objectives • Baseline for Equity and Affordability  EARM development • Community pillars for tool Roles & Responsibilities Austin Water Water Forward Task Force • Water Forward Steering Committee and Executive Project Sponsor • Project Manager • Task Leads and Technical Teams Climate Technical Advisory Group Consultants Community Ambassadors Targeted Stakeholder Groups AW Customers  January 2022 – Kickoff for WF24 Update Process Next Steps • Staff updates on task progress for • Community Engagement • Disaggregated Demand Modeling • Climate and Hydrology Analysis  Early 2022 activities to include: • Equity Grounding • Equity and Affordability Roadmap development • Updates to mission statement, guiding principles, objectives Thank you!