AB 691 - Proactively Planning for Sea-Level Rise Impacts

Trustees of granted lands with average annual gross public trust revenues exceeding $250,000 are required to submit a sea-level rise adaptation strategy assessment to the Commission by July 1, 2019. The following criteria, resources, and tools are meant to assist granted lands partners with AB 691 compliance. Commission staff are available to assist grantees throughout this process.

The Commission strives to be a resource for and provide assistance to the state's legislative grantees in their management of Public Trust lands and resources. Commission staff can be available to assist grantees throughout the assessment process to ensure that Public Trust resources are protected to the extent feasible.

Sea Level Rise Signs  by Flickr user Julie G https://www.flickr.com/photos/go_greener_oz/3046225225

Estimating financial costs of sea-level rise

Considering the financial costs associated with the impacts of sea-level rise will contribute significantly toward successful adaptation planning and the protection of Public Trust resources and values. In estimating costs, replacement or repair of existing facilities may be a factor, as well as the quantification of non-market asset values such as recreation and ecosystem services. Costs may be projected across the same time scales as sea-level rise (e.g. 2030, 2050, and 2100). In addition to a tally of losses, the cost of adaptation and mitigation strategies should be estimated, along with the potential economic benefits of those strategies. The following resources and tools are available to assist you:

Protecting Public Trust resources impacted by sea-level rise

As Public Land Trustees, granted lands partners ensure the protection of Public Trust resources and values. Please describe in your assessment how proposed sea-level rise adaptation and mitigation strategies will address the coastal asset vulnerabilities identified and the time frame for implementation of such measures. Include any plans to monitor the impacts of sea-level rise and the effectiveness of implemented adaptation and mitigation strategies.

Assessing sea-level rise impacts

To assess sea-level rise impacts to granted lands, first inventory vulnerable natural and built resources and facilities. Then, consider the impacts of sea-level rise itself and other dynamic coastal processes and climatic events that are projected to be exacerbated by sea-level rise such as coastal erosion, storms, and high tides on the vulnerable assets identified. The following resources and tools are available for assistance:

Developing local maps of future
sea-level rise conditions

There are many free, public, online sea-level rise viewing tools that can be used to create maps of sea-level rise conditions for 2030, 2050, and 2100. FEMA flood hazard maps will also be accepted, if projected time frames match the above years or are appropriately similar. The following resources and tools are available for assistance:

Contact

Public Land Management Specialist
Reid Boggiano (916) 574-0450