A DAPTATION L AND U SE P LANNING : G UIDANCE FOR M ARIN C OUNTY L - PowerPoint PPT Presentation

A DAPTATION L AND U SE P LANNING : G UIDANCE FOR M ARIN C OUNTY L OCAL G OVERNMENTS

SLR = increased volume of seawater from thermal expansion + increased mass of water from melting land ice.

2008 IPCC Sea Level Rise Scenarios High = 3 ft 36 (inches) 10 3

High = 5 Feet 2013 Sea Level Rise Scenarios for California 4

2017 Sea Level Rise Scenarios for California High = 5 ft H++ = 10 ft 5

Ma Marin C Cou ounty ty already f y flood oods

What we did • Marin County led a project to quantify the impacts to our communities and infrastructure from sea level rise and storms • Involved public and private stakeholders and coordinated with all cities and towns, and with local, regional, and state agencies to understand how Our Coast Our Future web viewer the impacts affect Marin displaying 10 inches of sea level rise with the 100-year storm, which is comparable to our winter storms. 7

What the Guidance provides Sea level rise overlay and policies Recommendations

What the Guidance Provides Decision- Case SLR Overlay Making Studies Process Unincorporated Countywide County Recommendations Recommendations

Fee-Simple Lease-Back C ASE S TUDIES Program with additional funding sources • A CQUISITIONS • T AXES Corte Madera Sales Tax • GHAD S Broad Beach Geological Hazard Abatement District (GHAD)

Sample Adaptation Pathways for Tam Valley • Hwy 101 & 1 Bulkhead: Hold the Line • Bothin Marsh Project: Restore and Elevate • SLR & Floodplain Overlay • Retreat and/or Acquisition

AT DP S IGNAL T RANSFER

Tam Valley Sample Overlay

Madeline Schaider Real Estate

What’s a TDR? I’m But hungry where will they go? Out of the flood zone, into the fire zone

S AMPLE O VERLAY P OLICIES • Waiver of liability and assumption of risk • Restrictions on land divisions  Acquisition program (further explore feasibility)  Encourage nature-based shoreline protection • Reasonable interim use of property  Development standards: for adapting in place or new development • Allow additional building height for elevation projects

R ECOMMENDATIONS • Shared Impacts/ Local Government Coordination • Tax Program • Use Adaptation Pathways Approach • SLR Outreach and Education • Goals and Objectives from BayWAVE ESC • Adapt in Place Design • Series of Specific Countywide Plan Policy Updates

Leslie Lacko • 415-473-4333 • llacko@marincounty.org