The original Sea Level Rise Policy Guidance document was unanimously adopted for use by the Coastal Commission on Wednesday, August 12, 2015. It provides an overview of the best available science on sea level rise for California and recommended methodology for addressing sea level rise in Coastal Commission planning and regulatory actions. It is intended to serve as a multi-purpose resource for a variety of audiences and includes a high level of detail on many subjects. Since the document is not specific to a particular geographic location or development intensity, readers should view the content as a menu of options to use only if relevant, rather than a checklist of required actions.
On Wednesday, November 7, 2018, the Coastal Commission unanimously adopted a Science Update to the Sea Level Rise Policy Guidance. The science-focused changes reflect recent scientific studies and statewide guidance that update our understanding of best available science on sea level rise projections relevant to California. Other sections of the Guidance remain unchanged.
The Ocean Protection Council recently released two reports that update our understanding of sea level rise science and best practices for planning for and addressing anticipated impacts. The first of these reports, Rising Seas in California: An Update on Sea-Level Rise Science, synthesizes recent evolving research on sea level rise science, and forms the foundation for the second report, the State of California Sea-Level Rise Guidance: 2018 Update. The 2018 OPC State SLR Guidance provides higher level recommendations for how to plan for and address sea level rise impacts, notably including a set of projections recommended for use in planning, permitting, investment, and other decisions.
A set of focused updates for the Coastal Commission SLR Policy Guidance was developed to reflect the updated best available science. These updates include the following.
Commission staff will be organizing a number of training events related to the adopted Sea Level Rise Policy Guidance in the future. Details will be posted on the Sea Level Rise page under the News, Important Dates, & Upcoming Events section as they become available. Announcements will also be shared via the Sea Level Rise Mailing List, which can be subscribed to by completing the form below.
To request specific training or a copy of previous drafts of the Guidance document, please email Commission staff at SLRGuidanceDocument@coastal.ca.gov. Subscribe to the SLR Mailing List below.