CGDB OVERVIEW
The City of Seattle Central Geographic Data Base consists of 5 primary data
compilations including the following coverages:
Common Land Data Base(CLDB)
Parcel Database
Street Network Database(SND)
Topography
Orthophotography
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Control, Legal, and PLS Layers
Parcel Layer
SND Layer
Contour, Elevation, and Obscured Layers
Digital Orthophotos
These are the corporate, shared layers to which all other City GIS layers may be
registered.
All corporate layers, except the topography layers and orthophotographs, geographically represent the City and its utility service areas. (See tile index
for graphic depiction.)
The CLDB, Parcel, and Topography based layers in the CGDB are organized by PLSS
quarter section. Each quarter section is represented by a "tile" in the CGDB
Library. SND is "tiled" by larger spatial units (which may contain as many as
20 quarter sections).
CGDB STEWARD:
Seattle Public Utilities
Information Technology
Geographic Information Systems Section
Tom Nolan - City GIS Manager
Seattle Municipal Tower
700 5th Ave, Suite 4800
Seattle, WA 98104
FORMAT/PLATFORM:
Unix: Generated, maintained in Arc/Info v.8.0 format.
Distributed in Arc/Info Export format, unless noted otherwise.
PC:
COORDINATE SYSTEM:
DATUM:
Selected layers and coverages maintained in 'shapefile' format
on City's ArcView 3.x platform
Washington State Plane, North Zone
Horizontal - North American Datum of 1983,1991 adjustment
Vertical
- North American Vertical Datum of 1988
NOTE: All GIS data compilations are copyrighted by the City of Seattle and all
rights are reserved. U.S. Copyright Act, 17 USC Sec.106 prohibits reproduction,
preparing of derivative works, and distributing copies of the data through sale
or transfer of ownership by rental, lease or lending.