79986 Data Set Published / External 37230 Inundation Project Completed 2025-01 These data were created as part of the National Oceanic and Atmospheric Administration Office for Coastal Management's efforts to create an online mapping viewer called the Sea Level Rise and Coastal Flooding Impacts Viewer. It depicts potential sea level rise and its associated impacts on the nation's coastal areas. The purpose of the mapping viewer is to provide coastal managers and scientists with a preliminary look at sea level rise and coastal flooding impacts. The viewer is a screening-level tool that uses nationally consistent data sets and analyses. Data and maps provided can be used at several scales to help gauge trends and prioritize actions for different scenarios. The Sea Level Rise and Coastal Flooding Impacts Viewer may be accessed at: https://coast.noaa.gov/slr. This metadata record describes the CA Central digital elevation model (DEM), which is a part of a series of DEMs produced for the National Oceanic and Atmospheric Administration Office for Coastal Management's Sea Level Rise and Coastal Flooding Impacts Viewer described above. This DEM includes the best available lidar known to exist at the time of DEM creation that met project specifications. This DEM includes data for Santa Cruz, Monterey and San Luis Obispo counties. The DEM was produced from the following lidar data sets: 1. 2022 NOAA Topobathy Lidar DEM: Morro Bay, CA 2. 2020 CA Santa Cruz County 3. 2018 CA AZ FEMA R9 Lidar 4. 2009 - 2011 CA Coastal Conservancy Lidar DEM: Coastal California The DEM is referenced vertically to the North American Vertical Datum of 1988 (NAVD88, Geoid12B) with vertical units of meters and horizontally to the North American Datum of 1983, realization 2011 (NAD83(2011)). The resolution of the DEM is approximately 3 meters. The NOAA Office for Coastal Management has developed high-resolution digital elevation models (DEMs) for use in the Office's Sea Level Rise internet mapping application. These DEMs serve as source datasets used to derive data to visualize the impacts of inundation resulting from sea level rise along the coastal United States and its territories. Source data and their associated metadata are available at the following URLs: 1. 2022 NOAA Topobathy Lidar DEM: Morro Bay, CA Metadata: https://chs.coast.noaa.gov/htdata/raster5/elevation/CA_Morro_Bay_DEM_2022_9630/ Data Download: https://chs.coast.noaa.gov/htdata/raster5/elevation/CA_Morro_Bay_DEM_2022_9630/ 2. 2020 CA Santa Cruz County Metadata: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/metadata/CA_SantaCruzCounty_2020_A20/ Data Download: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/CA_SantaCruzCounty_2020_A20/CA_SantaCruzCounty_2020/ 3. 2018 CA AZ FEMA R9 Lidar Metadata: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/metadata/CA_AZ_FEMA_R9_Lidar_2017_D18/ Data Download: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/CA_AZ_FEMA_R9_Lidar_2017_D18/ 4. 2009 - 2011 CA Coastal Conservancy Lidar DEM: Coastal California Metadata: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1124/index.html Data Download: https://coast.noaa.gov/htdata/raster2/elevation/California_Lidar_DEM_2009_1131/ Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION Theme ISO 19115 Topic Category elevation Spatial Global Change Master Directory (GCMD) Location Keywords CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA Spatial Global Change Master Directory (GCMD) Location Keywords CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CALIFORNIA Spatial Global Change Master Directory (GCMD) Location Keywords VERTICAL LOCATION > LAND SURFACE Instrument Global Change Master Directory (GCMD) Instrument Keywords LIDAR > Light Detection and Ranging Platform Global Change Master Directory (GCMD) Platform Keywords Airplane > Airplane Theme Bathymetry/Topography Theme DEM Theme Digital Elevation Model Theme elevation Theme flooding Theme inundation Theme lidar Theme sea level rise Theme topography Spatial Global Change Master Directory (GCMD) Location Keywords Monterey County Spatial Global Change Master Directory (GCMD) Location Keywords San Luis Obispo County Spatial Global Change Master Directory (GCMD) Location Keywords Santa Cruz County Spatial Global Change Master Directory (GCMD) Location Keywords US Office for Coastal Management Charleston SC Data Set Elevation None Planned Raster Any conclusions drawn from the analysis of this information are not the responsibility of the NOAA Office for Coastal Management or its partners. Acknowledgment of the NOAA Office for Coastal Management as a data source would be appreciated in products developed from these data, and such acknowledgment, as is standard for citation and legal practices for data source, is expected, Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) Data Steward 2025 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Distributor 2025 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Metadata Contact 2025 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Point of Contact 2025 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Ground Condition -122.318805 -119.471407 37.28724 34.89658 Range 2009 2022 Geographic 2D EPSG:6318 NAD83(2011) NAD83 (National Spatial Reference System 2011) GRS 1980 6378137 298.257222101 1 Geodetic Lattitude Lat degree north 2 Geodetic Longitude Lon degree east Vertical EPSG:5703 NAVD88 height North American Vertical Datum 1988 1 Gravity-related height H metre up Unclassified Data is available online for bulk or custom downloads None The dataset is provided as is, without warranty to its performance, merchantable state, or fitness for any particular purpose. The entire risk associated with the results and performance of this dataset is assumed by the user. This dataset should be used strictly as a planning reference and not for navigation, permitting, or other legal purposes. https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=6230 2025 Organization NOAA Office for Coastal Management Customized Download Create custom data files by choosing data area, map projection, file format, etc. A new metadata will be produced to reflect your request using this record as a base. Zip https://coast.noaa.gov/slrdata 2025 Organization NOAA Office for Coastal Management Sea Level Rise Viewer Data Data derived from this digital elevation model for use in the Sea Level Rise Viewer. https://coast.noaa.gov/slrdata/DEMs/CA/CA_Central_GCS_3m_NAVDm.tif 2025 Organization NOAA Office for Coastal Management Bulk Download Bulk download of data files in the original coordinate system. GeoTIFF https://coast.noaa.gov/ NOAA's Office for Coastal Management (OCM) website Online Resource HTML Information on the NOAA Office for Coastal Management (OCM) https://coast.noaa.gov/dataviewer/ NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV) Online Resource HTML The Data Access Viewer (DAV) allows a user to search for and download elevation, imagery, and land cover data for the coastal U.S. and its territories. The data, hosted by the NOAA Office for Coastal Management, can be customized and requested for free download through a checkout interface. An email provides a link to the customized data, while the original data set is available through a link within the viewer. https://coast.noaa.gov/slr Sea Level Rise Viewer Online Resource Use this web mapping tool to visualize community-level impacts from coastal flooding or sea level rise (up to 10 feet above average high tides). Photo simulations of how future flooding might impact local landmarks are also provided, as well as data related to water depth, connectivity, flood frequency, socio-economic vulnerability, wetland loss and migration, and mapping confidence. The DEM is derived from the source lidar data. Horizontal accuracy testing is not performed on the DEM. Lidar source data assumed to meet 1 meter horizontal accuracy. The DEM is derived from the source lidar data. Vertical accuracy is not tested on the DEM. Project specifications require all source lidar data used in constructing the DEM to meet FEMA Specifications for Flood Hazard Mapping. A visual qualitative check was performed to ensure data completeness. All available lidar data known at the time of DEM creation that meets project specifications has been used to develop the DEM. Known data gaps may exist where lidar coverage was incomplete. Data covers the tile scheme provided for the project area. Elevation data checked for anomalous elevation values outside expected range. Compiled DEM Organization NOAA OCM Publisher 1 The source elevation datasets listed above were identified, downloaded, edited, and finalized. 2024-01-01T00:00:00 2 Source elevation data and their associated hydro-breaklines, where available, were downloaded. Data were then reviewed and edited to meet the project's requirements. The major requirements were delineating streams 10m or greater in width, removing bridges over streams greater than 10m wide, flattening inland water bodies, and converting data referenced to an older geoid to the current geoid, Geoid12B. NOAA's VDatum datum conversion tool was used to convert geoids. Ocean-connected water areas were removed from data prior to final mosaicking. Data were then mosaicked together based on date, with the most recent data taking priority. Ocean-connected water areas were given a value of -99 to standardize this area's value across sources, to flatten water for mapping, and to make it easy for users to remove ocean-connected water if desired. 2024-01-01T00:00:00 Organization Office for Coastal Management OCM https://ror.org/05v14bq57 2234 South Hobson Avenue Charleston SC 29405-2413 https://www.coast.noaa.gov/ gov.noaa.nmfs.inport:79986 Blake Waring 2026-06-11T17:25:00 Blake Waring 2026-06-11T18:27:00 2026-06-11 Office for Coastal Management OCM 1002 Public No No 2026-06-11 3 Years 2029-06-11