CoSMoS CoSMoS 3.0: Southern California
CoSMoS 3.0: Southern California
Southern California study area. [Larger version]
CoSMoS 3.0 provides detailed predictions (meter-scale) of coastal flooding due to both future sea level rise and storms integrated with long-term coastal evolution (i.e., beach changes and cliff/bluff retreat) for the southern California region, from Point Conception (in Santa Barbara County) to Imperial Beach, CA.
Modeling from this project has been released through a phased approach. Phase 1 provided preliminary data from a 100-year storm event and five sea level rise scenarios (0, 0.5 meter, 1.0 meter, 1.5 meters and 2.0 meters), along with preliminary shoreline evolution modeling of sandy beaches and projected cliff retreat. These projections were made available to all five southern California counties in late 2015.
Phase 2 provides the full suite of 40 sea level rise (0–2 and 5 meters) and coastal storm (daily conditions, 1-year return, 20-year return, and 100-year return interval) scenarios, along with final coastal change projections for both sandy beaches and cliffs. Final results are now available for download for Los Angeles, San Diego, and Santa Barbara counties through USGS ScienceBase-Catalog. Final results for Ventura and Orange counties will be available in late spring 2017.
Example of flood projections for San Diego as viewed on Our Coast, Our Future viewer. [Larger version]
Model enhancements for southern California include:
In addition to the GIS shapefiles available on the USGS ScienceBase-Catalog, all model results are also available on the Our Coast, Our Future (OCOF) flood mapper, which provides a user-friendly web tool to review model projections. Complementary socioeconomic information is also available through the Hazards Exposure Reporting and Analytics (HERA), developed by Dr. Nathan Wood and Dr. Jeanne Jones from the USGS Western Geographic Science Center.
Southern California Regional Collaborations
CoSMoS Project Director Dr. Patrick Barnard explains flooding projections to City of LA planners. (Photo: Holly Rindge, USC Sea Grant) [Larger version]
CoSMoS 3.0 modeling results have been used in numerous projects throughout southern California. Through extensive stakeholder engagement, the CoSMoS team has partnered with many of the place-based organizations to help translate CoSMoS information and make it accessible to a broad range of audiences. Key partners include:
For more information, download CoSMoS v3.0 Southern California Bight:
Inundated areas shown should not be used for navigation, regulatory, permitting, or other legal purposes. The U.S. Geological Survey provides these data “as is” for a quick reference, emergency planning tool but assumes no legal liability or responsibility resulting from the use of this information.
The suggestions and illustrations included in these images are intended to improve coastal-flood awareness and preparedness; however, they do not guarantee the safety of an individual or structure. The contributors and sponsors of this product do not assume liability for any injury, death, property damage, or other effects of coastal flooding.
Use of trade names in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey.