Sandy beaches and dunes are one of the ecosystems most threatened by sea level rise (SLR). However, assessing the vulnerability of these ecosystems is difficult due to their dynamic nature and challenges associated with collecting detailed, high-frequency data over large areas. New drone and high-resolution satellite imagery approaches to characterize and map the dynamic features and zones of sandy beach and dune ecosystems will be developed and tested as part of this project. Proxy events for SLR will be used to scale the vulnerability of these dynamic habitat zones and features. This project will directly engage stakeholders in regional workshops and through a statewide CoastSnap network focusing on disadvantaged communities. The project will improve open coast classifications within the California Aquatic Resources Inventory (CARI). The project was awarded from the Ocean Protection Council’s (OPC) Proposition 68 Chapter 10 - Coastal Resilience solicitation and addresses multiple goals and objectives within the OPC Strategic Plan (2020-2025), primarily Objective 1.1: Build Resiliency to Sea Level Rise, Coastal Storms, Erosion and Flooding, and Objective 1.3: Improve Understanding of Climate Impacts on California’s Coast and Ocean.