Silvestrum is leading the city-wide sea level rise vulnerability and consequence assessment working directly with the San Francisco Planning Department, the Port of San Francisco, and the Office of Resilience and Capital Planning. The assessment will support department-based strategies to increase the sea level rise resilience of critical assets, as well as neighborhood-scale and city-scale strategies that will improve public safety and reduce the threat of sea level rise and coastal flooding into the next century. Silvestrum is providing strategic advice and capacity building across the City incorporating lessons learned from similar assessments in the San Francisco Bay Area and throughout the world. Although focused on city-owned assets (water, wastewater, transportation, open space, city facilities, power and the Port), the assessment also evaluates consequences to the community across four sustainability frames – society and equity, environment, economy, and governance. The final Sea Level Rise Vulnerability and Consequences Assessment is estimated to be released in late 2019 to support the broader City Adaptation Program.

San Francisco Planning Department, Port of San Francisco, the Office of Resilience and Capital Planning

San Francisco Vulnerability and Consequence Assessment

Silvestrum, as part of a consultant team led by AECOM, is supporting the City of San Francisco, in particular the Planning Department, Port and Municipal Transportation Agency, with the development of a Mobility Adaptation Strategy for the San Francisco Neighborhood around Islais Creek in preparation for expected sea level rise. The SMAS will examine and develop district-level and site-specific adaptation alternatives for near, mid and long-term flood risks through the year 2100, a timeframe aligned with the San Francisco Sea Level Rise Adaptation Program (SLR Adaptation Program) and other citywide resilience projects. It will also feed directly into the next phase of the broader City Adaptation Program, which will plan for and ensure the long-term reliability and resilience of the City’s entire waterfront infrastructure, transportation systems, development, public spaces, communities, and Port facilities. The SLR Adaptation Program recognizes the connections and interdependence of transportation systems, public infrastructure, jobs, housing, and the waterfront. To successfully prioritize and phase investments, the SLR Adaptation Program will look holistically at the City’s waterfront communities and the public assets that serve them. Silvestrum’s work includes the development of an outreach and engagement plan, preparing the adaptation strategy and developing site-specific adaptation strategies for maritime assets. This project will span 2019-2020.

San Francisco Planning Department

Islais Creek Southeast Mobility Strategy

A component of the Conservation International, Governments of Guyana and Suriname and Silvestrum project to establish a shared process for North Brazil Shelf Integrated Coastal Management, recognizing the prevalence, socio-ecological importance and connectivity of mangroves, in retention of key ecosystem services to communities between the North Brazil Shelf countries. Silvestrum did a scoping review of Nature-based Options and Solutions for Coastal Defenses - this effort helps set the bio-geomorphic context for management planning and provides the basis for natural infrastructure or green-gray hybrid solutions to assist in adapting to the changing climate. Key tasks included 1) development of climate change scenarios; 2) quantification of the influence of geomorphology and mangrove species composition in storm attenuation and sediment accretion; 3) review of environmental and anthropogenic factors that influence mangrove condition and associated flood risk; and 4) the development of a coastal vulnerability and adaptation framework to identify local- and regional-scale vulnerabilities to coastal hazards and identify potential nature-based adaptation solutions.

Conservation International , Global Environment Facility, IUCN-Sur

Setting the foundations for zero net loss of the mangroves that underpin human wellbeing in the North Brazil Shelf

Dr. Kris May led the climate change vulnerability and adaptation assessment with her former employer. Silvestrum, as a subconsultant to the AECOM-Parsons Joint Venture, is completing the assessment and ensuring consistency with both the City-wide Sea Level Rise Vulnerability and Consequence Assessment and the SFPUC's Collection System Capital Improvement Strategy. The completed work includes providing design consultations for specific early actions for implementation so that investments made today will support resilience into the next century. The major deliverables for this project include: a Briefing Book for decision makers and interested stakeholders that provides an overview of the climate assessment, and highlights the critical vulnerabilities with a timeline for adaptation implementation; a Technical Report that includes the full climate vulnerability and risk assessment across the full array of sewer infrastructure; and an Adaptation Plan that provides a range of strategies designed to reduce climate risks, with an emphasis on sea level rise and coastal flooding.

San Francisco Public Utilities Commission (SFPUC)

Climate Vulnerability and Adaptation Assessment

Silvestrum is supporting the Bay Area Adapting to Rising Tides (ART) program, with a goal of increasing the preparedness and resilience of Bay Area communities to sea level rise and other climate change-related impacts. Dr. Kris May has supported ART since its inception in 2010 with her previous employer, AECOM, including developing innovative mapping approaches and tools for completing climate change vulnerability and risk assessments. Since completing the original assessments in Alameda County in 2011, the ART program has grown to become the leading Bay Area climate change preparedness program, supporting multi-sector, cross-jurisdictional projects that build local and regional capacity for identifying and implementing adaptation responses. Silvestrum's current role on the AECOM-led team in the development of a regional ART vulnerability assessment includes coordination with Stanford's University's Natural Capital Project including providing technical advice and background data for an assessment of the value of wetlands and restored habitats in dissipating wave energy. Additional recent efforts include supporting the development of a Regional Vulnerability Assessment and Adaptation Framework to identify the most vulnerable regions of the Bay to sea level rise, considering the vulnerability and consequence of transportation assets, Priority Development Areas, and Priority Conservation Areas across a range of sea level rise scenarios. The framework supports the prioritization of assets for deeper analysis and development of adaptation strategies. Developing an adaptation roadmap for Suisun City that identifies adaptation pathways considering potential near- and long-term strategies.​

Metropolitan Transportation Commission (MTC), San Francisco Bay Conservation and Development Commission (BCDC), Bay Area Regional Collaborative (BARC)

Adapting to Rising Tides

Rather than wait for a natural disaster, the San Francisco Bay Area proactively reimagined a better future by creating blueprints for resilience that harness Bay Area innovation and serve as a model for communities around the world. Silvestrum was proud to be a member of the The All Bay Collective (ABC): a diverse group of locally based/globally experienced professionals, academics, students, and policy makers. Led by AECOM, we fused science, design excellence, academic leadership, community outreach, and business innovation to develop near-term actions and a long-range vision for the communities around the San Leandro Bay (e.g., east Oakland, Alameda, and San Leandro). Silvestrum worked with UC Berkeley to develop new groundwater mapping that incorporated sea level rise to uncover new vulnerabilities that would affect the communities as well as potential adaptation options.

Resilience by Design Challenge

The All Bay Collective: The Estuary Commons

Silvestrum is the City and County of San Francisco’s key Sea Level Rise Strategic Partner, leading the city-wide sea level rise vulnerability and consequence assessment that will support department-based strategies to increase sea level rise resilience of critical assets, as well as neighborhood-scale and city-scale strategies that will improve public safety and reduce the threat of sea level rise and coastal flooding into the next century. Silvestrum is providing strategic advice and capacity building across the City to complete the vulnerability and consequence assessment, incorporating lessons learned from similar assessments in the San Francisco Bay Area and throughout the world, including the Adapting to Rise Tides program.

San Francisco Planning Department, Port of San Francisco, the Office of Resilience and Capital Planning

Strategic Sea Level Rise Planning for San Francisco

2014 marked the return of a tidal connection to the Hamilton Army Airbase in Marin County, California. Approximately 650 acres of tidal and seasonal wetlands were retored with the placement of 7 million cubic yards of dredged material from maintenance dredging at the Port of Oakland. Dr. Steve Crooks has managed the restoration with his prior employer, working closely with the USACE Project Design Team, and managing the team that developed the wetland preliminary designs, the basis of design report, and the monitoring & adaptive management report. To maintain project continuity, Dr. Crooks continues to serve on the project Technical Advisory Committee to support the ongoing monitoring and adaptive management.

US Army Corps of Engineers, California State Coastal Conservancy

Hamilton Wetland Technical Advisory Committee

Silvestrum Climate Associates

25 Taylor Street 

San Francisco CA 94102

510.289.5705

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Silvestrum Climate Associates is a certified disadvantaged woman-owned small business.
San Francisco LBE ID CMD07211000015; California UCP DBE ID 45249;
California DGS SB(Micro) ID 2005392; California PUC WBE ID 17000473;

Federal US Government (SAM) DBE, WBE