Patrick Barnard Li Erikson Amy Foxgrover Andrea O'Neill Jessica Lovering 2017 Storm-hazard projections in shapefile formats data release DOI:10.5066/F7T151Q4 Pacific Coastal and Marine Science Center Santa Cruz, California U.S. Geological Survey Patrick L Barnard Li H Erikson Amy C Foxgrover Patrick W Limber Andrea C O'Neill Sean Vitousek 2018 Digital data release doi:10.5066/F7T151Q4 Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey https://doi.org/10.5066/F7T151Q4 Projected coastal squeeze derived from CoSMoS Phase 2 shoreline change and cliff retreat projections. Projected coastal squeeze extents illustrate the available area between shoreline (mean high water; MHW) positions and man-made structures and barriers (referred to as non-erodible structures) or cliff-top retreat, as applicable, for a range of sea-level rise scenarios. The coastal squeeze polygons include results from the Coastal Storm Modeling System (CoSMoS) shoreline change (CoSMoS-COAST; Vitousek and others, 2017; available at https://www.sciencebase.gov/catalog/item/57f426b9e4b0bc0bec033fad) and cliff retreat models (Limber and others, 2015; available at https://www.sciencebase.gov/catalog/item/57f4234de4b0bc0bec033f90) using future wave-climate conditions derived from Global Climate Models (GCMs). Coastal squeeze areas are identified and defined from combined model projections, using model scenarios where erosion was limited by non-erodible structures (for shoreline change models) and armoring (for cliff retreat models; both cliff and shoreline cases referred to as 'hold the line') and where no beach-nourishment was included. Coastal squeeze projections are defined for each sea-level rise scenario. Shoreline change and cliff retreat model details and data sources are outlined in CoSMoS_3.0_Phase_2_Southern_California_Bight:_Summary_of_data_and_methods (available at https://www.sciencebase.gov/catalog/file/get/57f1d4f3e4b0bc0bebfee139?name=CoSMoS_SoCalv3_Phase2_summary_of_methods.pdf). Phase 2 data for Southern California include information for the coast from the border of Mexico to Pt. Conception. Please read the Summary of methods and inspect output carefully. Data are complete for the information presented. These data are intended for policy makers, resource managers, science researchers, students, and the general public. These data can be used with geographic information systems or other software to identify and assess possible areas of vulnerability. These data are not intended to be used for navigation. This work is one portion of ongoing modeling efforts for California and the western United States. For information on data sources and details on methodology, see https://www.sciencebase.gov/catalog/file/get/57f1d4f3e4b0bc0bebfee139?name=CoSMoS_SoCalv3_Phase2_summary_of_methods.pdf. For more information on CoSMoS implementation, see https://walrus.wr.usgs.gov/coastal_processes/cosmos/ 20151210 20170630 oldest dataset used through publication date In work As needed -120.81115722553 -116.66931152258 34.687068180405 32.546444355161 USGS Metadata Identifier USGS:5956b7bbe4b0d1f9f050dc2f Data Categories for Marine Planning Physical Habitats and Geomorphology Global Change Master Directory (GCMD) Hazards Planning Ocean Waves Ocean Winds Beaches Erosion Sea Level Rise Storm Surge Extreme Weather Floods Water Depth USGS Thesaurus Climate Change Storms Wind Floods Sea-level Change ISO 19115 Topic Category Oceans ClimatologyMeteorologyAtmosphere Marine Realms Information Bank (MRIB) keywords sea level change waves floods coastal erosion Geographic Names Information System Santa Barbara County Ventura County Los Angeles County Orange County San Diego County State of California None Southern California Southern California Bight none USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. Erikson, Li U.S. Geological Survey, Pacific Coastal and Marine Science Center mailing and physical

2885 Mission Street

Santa Cruz CA 95060-5792 USA 831-460-7563 831-427-4748 lerikson@usgs.gov Vitousek, S Barnard, P. L. Limber, P. Erikson, L. H. Cole, B. 2017 Vitousek, S., Barnard, P. L., Limber, P., Erikson, L. H., and Cole, B.,2017, A model integrating longshore and cross-shore processes for predicting long-term shoreline response to climate change, Journal of Geophysical Research Earth Surface, 122, doi:10.1002/2016JF004065 Limber, P. Barnard, P. L. Hapke, C. 2015 Limber, P., Barnard, P.L., and Hapke, C., 2015, Towards projecting the retreat of California's coastal cliffs during the 21st century. The Proceedings of the Coastal Sediments 2015, World Scientific Attribute values are illustrations of coastal squeeze due to plausible sea-level rise and future-wave climate conditions and therefore cannot be validated against observations. The projections were generated using the latest downscaled climate projections for Southern California. Data have undergone quality checks and meet standards. Dataset is considered complete for the information presented. Users are advised to read the metadata record and Summary of methods carefully for additional details. Data are concurrent with topobathymetric DEM locations. N/A Patrick Barnard Li Erikson Amy Foxgrover Andrea O'Neill Liv Herdman 2017 Pacific Coastal and Marine Science Center Santa Cruz, California U.S. Geological Survey https://www.sciencebase.gov/catalog/file/get/57f1d4f3e4b0bc0bebfee139?name=CoSMoS_SoCalv3_Phase2_summary_of_methods.pdf online 2017 publication date Summary of methods Complete explanation of data and methodology used to create model Sean Vitousek Patrick Barnard 2016 Pacific Coastal and Marine Science Center Santa Cruz, California U.S. Geological Survey https://www.sciencebase.gov/catalog/item/57f426b9e4b0bc0bec033fad online 2016 publication date Model projections, metadata, and methods Model projections Patrick Limber Patrick Barnard 2016 Pacific Coastal and Marine Science Center Santa Cruz, California U.S. Geological Survey https://www.sciencebase.gov/catalog/item/57f4234de4b0bc0bec033f90 online 2016 publication date Model projections, metadata, and methods Model projections Applied CoSMoS-COAST models (Vitousek and others, 2017) to Southern California. See Summary of methods and references for information on model structure and data used. 20150801 Applied cliff retreat models (Limber and others, 2015)to Southern California. See Summary of methods and references for information on model structure and data used. 20150801 Combined cliff retreat and shoreline change projections for each sea-level rise scenario ('hold the line' and 'no nourishment' cases). 20170515 Metadata was modified to add or correct the Larger_Work section, and to correct the link(s) to the Methods Summary pdf so that it points to the new location of the file. No data information was changed. 20180814 Susan A Cochran U.S. Geological Survey, Pacific Coastal and Marine Science Center Geologist mailing and physical

2885 Mission Street

Santa Cruz CA 95060-5792 USA (831) 460-7545 scochran@usgs.gov Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. 20201019 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Performed minor edits to the metadata to correct typos. No data were changed 20211013 U.S. Geological Survey Susan A. Cochran Geologist Mailing and Physical

2885 Mission Street

Santa Cruz CA 95060 831-460-7545 scochran@usgs.gov Vector Universal Transverse Mercator 11 0.999600 -100.000000 0.000000 500000.000000 0.000000 row and column 2.000000 2.000000 meters North American Datum 1983 (NSRS2007) Geodetic Reference System 80 6378137.000000 298.257222 NAVD88 2.0 meters Implicit coordinate CoSMoS v3.0 Phase 2 coastal squeeze CoSMoS Phase 2 projections originators at United States Geological Survey, Pacific Coastal and Marine Science Center area of coastal squeeze, between projected shoreline (MHW) and non-erodible structure or cliff retreat, for given sea-level rise (SLR) value coastal area between projected shoreline and non-erodible structure or projected cliff retreat model derived geographic extent of projected coastal squeeze for sea-level rise indicated U.S. Geological Survey - ScienceBase mailing and physical

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 USA 1-888-275-8747 sciencebase@usgs.gov File (CoSMoS_v3_Phase2_coastal_squeeze.zip) contains projections for sea-level rise indicated. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. shapefile ArcGIS 10.2.2 Features are shapefile formats and are projected in UTM Zone 11 coordinates, with horizontal datum NAD83 (NSRS2007) and vertical datum NAVD88. The .zip file includes shapefiles. WinZip 22 https://www.sciencebase.gov/catalog/file/get/5956b7bbe4b0d1f9f050dc2f?name=CoSMoS_v3_Phase2_coastal_squeeze.zip Data can be downloaded via the World Wide Web (WWW) none 20211013 Andrea O'Neill U.S. Geological Survey, Pacific Coastal and Marine Science Center Oceanographer mailing and physical

2885 Mission Street

Santa Cruz CA 95060-5792 USA 831-460-7586 831-427-4748 aoneill@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998