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HomeMy WebLinkAboutCD Sea Level Rise Adaptation PPTSEA LEVEL RISE INFORMATIONAL REPORT San Rafael City Council October 19, 2020 INTRODUCTION •Draft General Plan 2040 Safety Element New Policies & Programs addressing sea level rise •Two supportive documents prepared for GP 2040 Flood Risk & Sea Level Rise Adaptation Report Sea Level Rise Adaptation Technical Guidance Study San Rafael City Council October 19, 2020 BACKGROUND •History of flooding in San Rafael •Areas vulnerable to sea level rise •White Paper –2014 •BayWAVE Vulnerability Assessment –2017 •Climate Change Action Plan 2030 –2019 •Draft General Plan 2040 San Rafael City Council October 19, 2020 San Rafael City Council October 19, 2020 DRAFT GENERAL PLAN 2040 SAFETY ELEMENT •Seven policies & 16 program addressing SLR Focus on awareness/disclosure, framework for regulation, planning for adaptation •Sea Level Rise Projection Map –update every 5 years •Commitment to assess SLR in new development + capital projects •Establish minimum construction elevation + SLR Overlay •Improve/expand shoreline levee system •Prepare and adopt a Sea Level Rise Adaptation Plan –HIGH PRIORITY Two supportive documents to reinforce plan prep and provide guidance San Rafael City Council October 19, 2020 Flood Risk & Sea Level Rise Adaptation Report PURPOSE & CONTENT •Building from most current resources and utilizing BayWAVE as a foundation + compliance with SB 379 •Initial guidance on what should be covered in the adaptation plan, approach to preparation and suggestions suitable for San Rafael Clear objectives –develop through a community-based process Identify policies and regulatory measures Identify appropriate adaptation tools and strategies Identify funding measures and funding sources for implementation San Rafael City Council October 19, 2020 Sea Level Rise Adaptation Technical Guidance Study - Department Name Presentation Title Presentation Date www.cityofsanrafael.org Slide 9 Study’s Regional Assessments –Covers all shoreline within City boundaries –6 regions (grouped by similar geography & flood risks) –Study considers City-wide and region-specific adaptation measures Department Name Presentation Title Presentation Date www.cityofsanrafael.org Slide 10 1 Photo credit: ESA Photo credit: ESA Region Example: Canal South •Much of the area has subsided below today’s high tides •Flooding already experienced annually –more extreme with SLR •Recommendations for short-and longer-term adaptation measures Department Name Presentation Title Presentation Date www.cityofsanrafael.org Slide 11 1 Photo credit: ESA Photo credit: ESA Region Example: Canal North •Higher than Canal South •Floodplain continues into Downtown •Recommendations for short-and longer-term adaptation measures Department Name Presentation Title Presentation Date www.cityofsanrafael.org Slide 12 State Sea-Level Rise Projections & Guidance Department Name Presentation Title Presentation Date www.cityofsanrafael.org Slide 13 Priority Recommendations City-wide planning measures 1.Canal Feasibility Study 2.Sea Level Rise overlay maps 3.Shoreline pump station assessments Department Name Presentation Title Presentation Date www.cityofsanrafael.org Slide 14 Priority Recommendations Short-term projects (both short timeframe and on City-owned land) 1.Raise shoreline at west end of Harbor Way (CS-1) 2.Install one-way tide gate for stormwater culvert at 2nd & Irwin Street (CN-4), San Pedro Road near yacht club (CN-5), and at Summit Drive (CN-6) 3.Combined stormwater & Bay flooding study for San Pedro Road & Loch Lomond (LL-1) Annual flooding during king tides Leaking flapgate Photo credit: Stephen Sarhad. Obtained by ESA from Creative Commons January 10, 2017 RECENT RELATED ACTIONS & REPORTS 3. City Council should take a strong, unified pro-housing stance to manage community opposition to new housing. •Priority Development Area designation for Southeast San Rafael/Canal •City Support for Canal Alliance “Better Together Resilience Community Grant” •Proposition 68 Ocean Protection Council Grant •TAM Grants for Sea Level Rise •Tiscornia Marsh Habitat Restoration &Sea Level Rise Adaptation Project •Study on Groundwater-Aquatic Science Center •Marin Grand Jury Report –Climate Change:How will Marin Adapt? San Rafael City Council October 19, 2020 NEXT STEPS & RECOMMENDED ACTION 3. City Council should take a strong, unified pro-housing stance to manage community opposition to new housing. •Reports are supportive to Draft General Plan 2040 –public review and comment in tandem with comment commenting on Draft GP 2040 https://www.cityofsanrafael.org/gp -2040-document-library/ •Accept report San Rafael City Council October 19, 2020 QUESTIONS