48042 CA_ChannelIslands_metadata Data Set Published / External 37230 Inundation Project Completed 2013-09 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 (slr) 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: http://www.coast.noaa.gov/slr This metadata record describes the Channel Islands, CA 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 for the Channel Islands, CA. This includes the islands of Anacapa, Santa Barbara, San Miguel, Santa Rosa, and Santa Cruz. The DEM was produced from LiDAR acquired by the U.S. Geological Survey (USGS) in 2010 for the Channel Islands. See Supplemental Information for additional information about this data set. Hydrographic breaklines were derived from LiDAR intensity imagery using intensity raster stereo models. The final DEM is hydro flattened such that water elevations are less than or equal to -1 meters. The DEM is referenced vertically to the North American Vertical Datum of 1988 (NAVD88) with vertical units of meters and horizontally to the North American Datum of 1983 (NAD83). The resolution of the DEM is approximately 5 meters. The NOAA Office for Coastal Management has developed high-resolution digital elevation models (DEMs) for use in the Center's Sea Level Rise and Coastal Flooding Impacts 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. 10899 For further information or to download the dataset used to construct this DEM: 2010 U.S. Geological Survey (USGS) Topographic Lidar: Channel Islands, CA The metadata is available at: https://coast.noaa.gov/dataviewer/webfiles/metadata/usgs2010_channel_islands_template.html Final Report available at: ftp://ftp.coast.noaa.gov/pub/crs/beachmap/qa_docs/ca/usgs/channel_islands/usgs2010_channel_islands_project_report.doc Survey Control Report available at: ftp://ftp.coast.noaa.gov/pub/crs/beachmap/qa_docs/ca/usgs/channel_islands/usgs2010_channel_islands_survey_report.pdf Data download from the NOAA Office for Coastal Management Digital Coast at: http://www.coast.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=1398 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0000001 Longitude_Resolution: 0.0000001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222101 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum of 1988 Altitude_Resolution: 0.001 Altitude_Distance_Units: meters Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > LAND SURFACE > GEOMORPHIC LANDFORMS/PROCESSES > COASTAL PROCESSES > FLOODING Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > LAND SURFACE > GEOMORPHIC LANDFORMS/PROCESSES > COASTAL PROCESSES > SEA LEVEL CHANGES Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > DIGITAL ELEVATION/TERRAIN MODEL (DEM) Theme ISO 19115 Topic Category elevation Spatial Global Change Master Directory (GCMD) Location Keywords CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CALIFORNIA Theme Bathymetry/Topography Theme DEM Theme Digital Elevation Model Theme elevation Theme flooding Theme inundation Theme lidar Theme sea level rise Theme topography Spatial Anacapa Island Spatial California Spatial Channel Islands Spatial Offshore Los Angeles, California Spatial San Miguel Island Spatial Santa Barbara Island Spatial Santa Cruz Island Spatial Santa Rosa Island Spatial US Office for Coastal Management Charleston SC Data Set None Planned Image (digital) 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. Data Steward 2013-09 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 2013-09 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 2013-09 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 2013-09 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 -120.582289 -118.967218 34.160591 33.4127402 Range 2012-10 2012-11 Yes 3 Area No Row 16621 Column 35895 Vertical 1 Unclassified 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/ Online Resource https://coast.noaa.gov/digitalcoast/tools/slr Online Resource https://coast.noaa.gov/slr Online Resource 2016-05-23 Date that the source FGDC record was last modified. 2017-11-14 Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details. 2018-02-08 Partial upload of Positional Accuracy fields only. 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. 1 The data set listed below was used to develop the DEM. For further information about this data set or to download the data, please see the link to the data set in the Supplemental Information field. 1. 2010 U.S.Geological Survey (USGS) Topographic Lidar: Channel Islands, CA 2. Hydrographic breaklines derived from LiDAR intensity imagery using intensity raster stereo models, were supplied with the lidar data. 2012-01-01T00:00:00 2 Class 2, ground LiDAR points are exported from the LAS files into an Arc Geodatabase (GDB) in multipoint format. Hydro breaklines are assigned an elevation of -1 meters and loaded into an Arc GDB. An ESRI Terrain is generated from these inputs. 2012-01-01T00:00:00 3 The ESRI Terrain is converted to 5 separate DEMs in Erdas image file format with a cell size of 3 meters. The DEMs are reviewed in Global Mapper for incorrect elevations and artifacts that are introduced from source inputs or during the raster creation process. Corrections are applied to the DEMs and reprocessed for review. 2012-01-01T00:00:00 4 All DEMs are loaded into Global Mapper for the last review. During this last review, an analyst checks to ensure full, complete coverage, no issues along DEM boundaries, DEMs seamlessly edge-match, and that there are no remaining processing artifacts in the dataset. Once approved, DEMs are re-projected to the NAD83 geographic coordinate system. The 5 separate DEMS are converted to one DEM. 2012-01-01T00:00:00 5 For data distribution purposes, NOAA OCM converted the cell resolution of the DEM from 3 meters to 5 meters. 2012-01-01T00:00:00 gov.noaa.nmfs.inport:48042 Anne Ball 2017-11-14T14:14:57 SysAdmin InPortAdmin 2023-05-30T18:09:30 2018-02-08 Office for Coastal Management OCM 1002 Public No No 2018-02-08 1 Year 2019-02-08