County, King, 20110518, King County Digital Ground Model Data Sources: King County, King County, WA.Online Links:
- \\gisimage\images\FTPData\DataStage\dgm_source\dgm_source
This is a Vector data set. It contains the following vector data types (SDTS terminology):
The map projection used is Lambert Conformal Conic.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.000250
Ordinates (y-coordinates) are specified to the nearest 0.000250
Planar coordinates are specified in survey feet
The horizontal datum used is D_North_American_1983_HARN.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.000000.
The flattening of the ellipsoid used is 1/298.257222.
Sequential unique whole numbers that are automatically generated.
Coordinates defining the features
Value | Definition |
---|---|
3D04 | 3di West Snoqualmie, White and Green Rivers 2004 stereo photo control |
KC_LOW | King County Lowland Project 2002 - Lidar bare earth point data |
KC_USGS | USGS DEM and King County joined to complete full 7500 tile |
NOAA | National Oceanic and Air Administation bathymetric point data of various vintages |
PSLC | Puget Sound Lidar Consortium 2002 - Terrapoint bare earth data extracted from all return records |
PSLC_KC | Puget Sound Lidar Consortium and King County joined to create full tile using best data from either |
USGS | United States Geological Survey 10 M DEM |
WADOE | Washington Department of Ecology bathymetry data (contour converted to TIN) |
WS09 | 2009 Watershed Sciences LiDAR DGM (bare earth) ascii point data for Snoqualmie at Carnation North, Snoqualmie at Carnation South, South Fork Snoqualmie, Newaukum Creek and Lower White River |
WS10 | 2010 Watershed Sciences LiDAR DGM (bare earth) ascii point data for Cedar River |
Integer
Name of project or data source in mixed case
Value | Definition |
---|---|
3d04 | Ascii tile from 3D04 data source |
gs | Ascii tile from USGS data source |
jb | Ascii tile contains NOAA or WADOE bathymetry data source |
jn | Ascii tile contains data from both King County and PSLC lidar projects |
js | Ascii tile contains data from both USGS and King County |
kc | Ascii tile contains data from either King County upland or lowland project |
ps | Ascii tile contains data from PSLC project |
ws09 | Ascii tile contains data from Watershed Sciences project |
ws10 | Ascii tile contains data from Watershed Sciences project |
Area in feet
Perimeter in feet
206-263-4867 (voice)
King County's Elevation (digital ground model - DGM) Database has at its core a high-resolution base from lidar collected in 2002 and 2003. As new elevation data becomes available to infill missing areas (i.e., other sources for bathymetry data as lidar does not collect water areas), or becomes available that improves on the existing lidar base, it is appended to the elevation database.Where necessary, users may wish to obtain the source and vintage of information in the current database by using this map (or its underlying datafile - p_dgm_source.shp).
The source data file also serves as an index to the various raw data files (zipped ascii files) that may exist for a given area in a location where multiple sources overlap.
Data sources used in this process:
Data sources used in this process:
Data sources used in this process:
Data sources used in this process:
None
The project area source polygons cover the entire extent of the elevation database.
Project area boundaries define extent of each projects contribution to the underlying 7500 data tile. Where project areas overlap, multiple versions of the tile will exist, each with a unique suffix defining the data sources in that tile. A tile is named with the most recent data source suffix even if the newest source contributes only a small portion to the extent of the new tile.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
- King County data are made available with the understanding that they shall be used exclusively by the obtainer or his/her authorized agents. Digital products may not be reproduced or redistributed in any form or by any means without the express written authorization of King County.
206-263-5220 (voice)
/plibrary2/survey/shapes/polygon/dgm_source.shp
King County disclaims any warranty of use of any digital product or data beyond that for which it was designed.
Data format: | ESRI Shapefile |
---|---|
Network links: |
\\gisdw\kclib\plibrary2\survey\shapes\polygon\dgm_source.shp |
Media you can order: |
Yes
(format CD or DVD Read-only media, if offline)
|
Contact KCGIS Client Services for the cost of reproduction - <http://www.kingcounty.gov/operations/GIS/GISData/GISDataDistribution.aspx>
206-263-4867 (voice)
firstname.lastname@kingcounty.gov