NOAA Coastal Services Center Coastal Inundation Digital Elevation Model: Channel Islands, CA

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC)

Publication_Date: 201309

Title:

NOAA Coastal Services Center Coastal Inundation Digital Elevation Model: Channel Islands, CA

Geospatial_Data_Presentation_Form: Raster

Publication_Information:

Publication_Place: Charleston, SC

Publisher: NOAA's Ocean Service, Coastal Services Center (CSC)

Online_Linkage: <http://www.csc.noaa.gov/slr>

Online_Linkage: <http://www.csc.noaa.gov>

Description:

Abstract:

These data were created as part of the National Oceanic and Atmospheric Administration Coastal Services Center'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.csc.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 Coastal Services Center'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.

Purpose:

The NOAA Coastal Services Center 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.

Supplemental_Information:

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: <http://csc.noaa.gov/dataviewer/webfiles/metadata/usgs2010_channel_islands_template.html>
Final Report available at: <ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/ca/usgs/channel_islands/usgs2010_channel_islands_project_report.doc>
Survey Control Report available at: <ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/ca/usgs/channel_islands/usgs2010_channel_islands_survey_report.pdf>
Data download from the NOAA Coastal Services Center Digital Coast at: <http://www.csc.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=1398>

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 201210

Ending_Date: 201211

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -120.582289

East_Bounding_Coordinate: -118.967218

North_Bounding_Coordinate: 34.160591

South_Bounding_Coordinate: 33.4127402

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category

Theme_Keyword: elevation

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: Bathymetry/Topography

Theme_Keyword: elevation

Theme_Keyword: Digital Elevation Model

Theme_Keyword: DEM

Theme_Keyword: lidar

Theme_Keyword: inundation

Theme_Keyword: flooding

Theme_Keyword: lidar

Theme_Keyword: topography

Theme_Keyword: sea level rise

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: US

Place_Keyword: California

Place_Keyword: Channel Islands

Place_Keyword: Anacapa Island

Place_Keyword: Santa Barbara Island

Place_Keyword: San Miguel Island

Place_Keyword: Santa Rosa Island

Place_Keyword: Santa Cruz Island

Place_Keyword: Offshore Los Angeles, California

Access_Constraints: None

Use_Constraints:

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.

Data_Set_Credit:

Acknowledgment of the NOAA Coastal Services Center 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_Quality_Information:

Logical_Consistency_Report:

Data covers the tile scheme provided for the project area. Elevation data checked for anomalous elevation values outside expected range.

Completeness_Report:

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.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

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.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

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.

Lineage:

Process_Step:

Process_Description:

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.

Process_Date: 2012

Process_Step:

Process_Description:

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.

Process_Date: 2012

Process_Step:

Process_Description:

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.

Process_Date: 2012

Process_Step:

Process_Description:

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.

Process_Date: 2012

Process_Step:

Process_Description:

For data distribution purposes, NOAA CSC converted the cell resolution of the DEM from 3 meters to 5 meters.

Process_Date: 2012

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: Grid Cell

Row_Count: 16621

Column_Count: 35895

Vertical_Count: 1

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

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: NOAA Coastal Services Center

Contact_Address:

Address_Type: mailing and physical

Address: 2234 South Hobson Ave.

City: Charleston

State_or_Province: SC

Postal_Code: 29405-2413

Contact_Voice_Telephone: 843-740-1202

Contact_Electronic_Mail_Address: csc.info@noaa.gov

Resource_Description: Downloadable Data

Distribution_Liability:

Any conclusions drawn from the analysis of this information are not the responsibility of the NOAA Coastal Services Center or its partners.

Metadata_Reference_Information:

Metadata_Date: 201309

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: NOAA Coastal Services Center

Contact_Address:

Address_Type: mailing and physical

Address: 2234 South Hobson Avenue

City: Charleston

State_or_Province: SC

Postal_Code: 29405-2413

Contact_Voice_Telephone: 843-740-1202

Contact_Electronic_Mail_Address: csc.info@noaa.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998