NOAA Office for Coastal Management Coastal Inundation Digital Elevation Model: Portland (OR) WFO - Tillamook, Lincoln, and Lane Counties

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), Office for Coastal Management (OCM)

Publication_Date: 2012

Title:

NOAA Office for Coastal Management Coastal Inundation Digital Elevation Model: Portland (OR) WFO - Tillamook, Lincoln, and Lane Counties

Geospatial_Data_Presentation_Form: Raster

Publication_Information:

Publication_Place: Charleston, SC

Publisher: NOAA's Ocean Service, Office for Coastal Management (OCM)

Online_Linkage: http://www.coast.noaa.gov/digitalcoast/tools/slrviewer

Online_Linkage: http://www.coast.noaa.gov

Description:

Abstract:

This digital elevation model (DEM) 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. The DEMs created for this project were developed using the NOAA National Weather Service's Weather Forecast Office (WFO) boundaries. Because the WFO boundaries can cover large areas, the WFO DEM was divided into smaller DEMs to ensure more manageable file sizes.
The Portland (OR) WFO DEM was split into two smaller DEMs. They are divided along county lines and are: 1. Portland (OR) WFO - Tillamook, Lincoln, and Lane Counties 2. Portland (OR) WFO - Clatsop, Columbia, and Multnomah Counties
This metadata record describes the DEM for the Portland (OR) WFO - Tillamook, Lincoln, and Lane Counties. The DEM includes the best available lidar data known to exist at the time of DEM creation for the coastal areas of Tillamook, Lincoln, and Lane counties, that met project specifications.
Please note that the Portland WFO boundary extends into Washington state. The Washington portion of the WFO is also available for download from NOAA OCM as a separate product.
The DEM is derived from LiDAR datasets collected for the Oregon Department of Geology and Mineral Industries (DoGAMI) and the Oregon Department of Forestry (ODF). LiDAR data for Lane, Lincoln, and Tillamook counties, was collected for DoGAMI and ODF in 2007 through 2009. Note that the Tillamook Bay area (2007 ODF data) was added to the original 2012 DEM in December 2014. Hydrographic breaklines used in the creation of the DEM were delineated using LiDAR intensity imagery generated from the DoGAMI and ODF datasets and were also obtained from USACE. The DEMs are hydro flattened such that water elevations are less than or equal to 0 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 Office for Coastal Management has developed high-resolution digital elevation models (DEMs) for use in the Offices'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:

All datasets used to construct this DEM are publicly available via the NOAA Digital Coast (www.coast.noaa.gov/lidar). Further information regarding the constituent lidar datasets of this DEM can be accessed using the following url's:
http://coast.noaa.gov/dataservices/Metadata/TransformMetadata?u=http://coast.noaa.gov/data/Documents/Metadata/Lidar/harvest/or2009_dogami_north_coast_m575_metadata.xml&f=html http://coast.noaa.gov/dataservices/Metadata/TransformMetadata?u=http://coast.noaa.gov/data/Documents/Metadata/Lidar/harvest/or2007_odf_m104_metadata.xml&f=html

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 2007

Ending_Date: 2009

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -124.231498953

East_Bounding_Coordinate: -123.610993953

North_Bounding_Coordinate: 45.784407768

South_Bounding_Coordinate: 43.861017768

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: Oregon

Place_Keyword: Lane County

Place_Keyword: Lincoln County

Place_Keyword: Tillamook County

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 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_Quality_Information:

Logical_Consistency_Report:

Data covers the project area, defined as the WFO boundary. 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:

Source_Information:

Source_Citation:

Citation_Information:

Originator: NOAA Office for Coastal Management

Publication_Date: 2012

Title: NOAA Office for Coastal Management lidar data holdings

Online_Linkage: http://coast.noaa.gov/dataviewer/

Online_Linkage:

http://coast.noaa.gov/dataservices/Metadata/TransformMetadata?u=http://coast.noaa.gov/data/Documents/Metadata/Lidar/harvest/or2009_dogami_north_coast_m575_metadata.xml&f=html

Online_Linkage:

http://coast.noaa.gov/dataservices/Metadata/TransformMetadata?u=http://coast.noaa.gov/data/Documents/Metadata/Lidar/harvest/or2007_odf_m104_metadata.xml&f=html

Type_of_Source_Media: online digital data

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 2007

Ending_Date: 2009

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: OCM lidar

Source_Contribution:

Lidar points covering portions of Lane, Lincoln, and Tillamook counties were used in developing the DEM.

Process_Step:

Process_Description:

1. Lidar source data and hydrographic breaklines were obtained and imported into an ESRI ArcGIS file geodatabase for each constituent county within the WFO boundary. Note that lidar source data for the Tillamook Bay area (2007 ODF data) was added to the original 2012 DEM in December 2014. Only ground classified lidar (Class 2) points were used to reflect a bare earth surface. Hydrographic features were assigned elevation values at or below 0 meters. An ESRI Terrain was then generated from these source data. 2. The ESRI Terrain was converted to a DEM (Erdas Imagine .img file format) with a cell size of 3 meters. The DEM was reviewed in Global Mapper for incorrect elevations and artifacts introduced from source inputs or during the raster creation process. Corrections were applied to the DEM and reprocessed for further review. 3. All DEMs for the entire study area (WFO) were loaded into Global Mapper for a final review. The constituent DEMs were then checked to ensure complete coverage within the study area and that no issues existed along the boundary between adjacent DEMs. Once it was determined all DEMs were seamlessly edge-matched and no other artifacts were present, the constituent DEMs were mosaiced together, resampled to 5m and reprojected to the NAD83 geographic coordinate system.

Source_Used_Citation_Abbreviation: OCM lidar

Process_Date: 2012

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: Grid Cell

Row_Count: 42742

Column_Count: 13789

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 Office for Coastal Management (OCM)

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: coastal.info@noaa.gov

Resource_Description: Downloadable Data

Distribution_Liability:

Any conclusions drawn from the analysis of this information are not the responsibility of the Office for Coastal Management or its partners.

Metadata_Reference_Information:

Metadata_Date: 20141205

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: NOAA Office for Coastal Management (OCM)

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: coastal.info@noaa.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998