GIS Data Catalog

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Generalized cartographic contour isolines.

These contours have been derived from a wide range of primary source data and are only as accurate as that source data.

They are derived from 30 foot resolution data and are useful only for determining general elevation trend and for cartographic display.

Generalized 50-foot contour isolines derived from Puget Sound lowlands combined bathymetry and elevation digital elevation model.

Layer Name	SURFACE_PSDEMContour050
Subject Category	Imagery
Title	Cartographic contour isolines from combined bathymetry and topography of the Puget Lowlands
Feature Count	1
Feature Type	Raster
Next Update	None planned
Spatial reference	None
Control ID	None
Place Keywords	Pacific NW, Puget Sound Lowlands, Washington State
Theme Keywords	Elevation, Contour Isolines, Elevation Model, Digital Elevation Model, Topography
Supplemental Information	All these datasets exist only at KeyRegion index level.

OBJECTID From ESRI	Description Internal feature number. Domain Sequential unique whole numbers that are automatically generated.
Shape From ESRI	Description Feature geometry. Domain Coordinates defining the features.
Shape_Length From Esri	Description Length of feature in internal units. Domain Positive real numbers that are automatically generated.
Shape_Area From Esri	Description Area of feature in internal units squared. Domain Positive real numbers that are automatically generated.
MosaicID No Source Noted	Description Not Found Domain Not Found

Maintained by	KCGIS Center
Primary	KCGIS Center giscenter@kingcounty.gov

License	Terms of use and copyright

Generalized cartographic contour isolines.

These contours have been derived from a wide range of primary source data and are only as accurate as that source data.

They are derived from 30 foot resolution data and are useful only for determining general elevation trend and for cartographic display.

Generalized 50-foot contour isolines derived from Puget Sound lowlands combined bathymetry and elevation digital elevation model.

Maintained by	KCGIS Center
Primary	KCGIS Center giscenter@kingcounty.gov

License	Terms of use and copyright

12/1/2005	Used ArcInfo 9.0 workstation ASCIIGRID command to convert ascii-formatted file to ESRI grid format
12/1/2005	Use ArcInfo 9.0 workstation PROJECTDEFINE to establish Washington State Plane North, NAD 83, units Feet projection header. Used PROJECTGRID command to reproject grid to HARN.
12/1/2005	Downloaded and unzipped psdem_2005.asc from http://www.ocean.washington.edu/data/pugetsound/psdem2005.html
Update 4	ArcInfo 9.0 Workstation LATTICECONTOUR command used with following arguements: interval (20), base_contour (-1000), contour_item (elevation), weed_tolerance (#), z_factor (#). Resulting coverage inspected in ArcGIS and exported to shapefile format to Spatial Data Warehouse.