Coastal communities across California face increasing threats from flooding with changes in storm patterns and sea-level. Now all coastal areas across the state have future flood hazard projections from the USGS Coastal Storm Modeling System (CoSMoS) to inform coastal planning and risk reduction. … With the release of data in Mendocino County, CoSMoS projections are now available across the entire state, including San Francisco Bay and the Channel Islands. CoSMoS is a dynamic modeling approach that allows for detailed projections of coastal flooding due to both future sea level change and extreme storms, integrated with long-term coastal evolution (i.e., beach changes and cliff retreat).