Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC)
2012
NOAA Coastal Services Center Coastal Inundation Digital Elevation Model: Seattle (WA) WFO - Clallam, Jefferson, Kitsap, and Mason Counties
Raster
Charleston, SC
NOAA's Ocean Service, Coastal Services Center (CSC)
http://www.csc.noaa.gov/digitalcoast/tools/slrviewer
http://www.csc.noaa.gov
This digital elevation model (DEM) 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. 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.
This metadata record describes the DEM for Seattle (WA) WFO - Clallam, Jefferson, Kitsap, and Mason Counties. The DEM includes the best available
lidar data known to exist at the time of DEM creation for the coastal areas of Clallam, Jefferson, Kitsap, and Mason counties, that met
project specifications.
The DEM is derived from multiple LiDAR datasets collected between 1996 and 2005 for the Puget Sound LiDAR Consortium. Hydrographic breaklines used
in the creation of the DEM were delineated using LiDAR intensity imagery generated from each constituent dataset. 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.
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.
For more information regarding the data used in the creation of the DEM, please visit:
Puget Sound LiDAR Consortium Homepage: http://pugetsoundlidar.ess.washington.edu/
1996
2005
ground condition
None planned
-124.850343969
-121.372158969
48.5007046226
46.7274346226
ISO 19115 Topic Category
elevation
None
Bathymetry/Topography
elevation
Digital Elevation Model
DEM
lidar
inundation
flooding
lidar
topography
sea level rise
None
US
Washington
Clallam County
Jefferson County
Kitsap County
Mason County
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.
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 covers the project area, defined as the WFO boundary. Elevation data checked for anomalous elevation
values outside expected range.
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.
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.
Puget Sound LiDAR Consortium
2012
Puget Sound LiDAR Consortium lidar data holdings
http://pugetsoundlidar.ess.washington.edu/
online digital data
1996
2005
ground condition
Puget Sound Lidar Consortium lidar
LiDAR datasets contributed by the Puget Sound LiDAR Consortium in the creation of the Seattle (WA) WFO DEMs:
Clallam County- 2001 Clallam County, 2005 Olympic Peninsula
Jefferson County- 2002 Thurston, Mason, Jefferson Counties, Vashon Island, Pierce Peninsula
Kitsap County- 1996-97 Bainbridge Island, 2000 Kitsap Peninsula, Seattle, and East to Snoqualmie
Mason County- 2002 Thurston, Mason, Jefferson Counties, Vashon Island, Pierce Peninsula
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. 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.
Puget Sound Lidar Consortium lidar
2012
Raster
Grid Cell
39406
77293
1
0.0000001
0.0000001
Decimal degrees
North American Datum of 1983
Geodetic Reference System 80
6378137.000000
298.257222101
North American Vertical Datum of 1988
0.001
meters
Explicit elevation coordinate included with horizontal coordinates
NOAA Coastal Services Center
mailing and physical
2234 South Hobson Ave.
Charleston
SC
29405-2413
843-740-1202
csc.info@noaa.gov
Downloadable Data
Any conclusions drawn from the analysis of this information are not the responsibility of the Coastal Services Center
or its partners.
2012
NOAA Coastal Services Center
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
csc.info@noaa.gov
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998