Metadata: impervious_area_bes_pdx

impervious_area_bes_pdx

Category Collection System Analysis
Feature Dataset Name STAND-ALONE
Item Name impervious_area_bes_pdx
Database Type SDE
Originator City of Portland
Bureau Bureau of Environmental Services
Publication Date 02/14/2023
Abstract A layer that displays impervious surfaces
Purpose Delineation of parking surfaces, road surfaces, and building footprints which are useful for analysis and display of impervious area.
Supplemental Information The impervious dataset was derived from aerial photo geometric photography flown over the years 1996 thru 2023. Updates occur periodically using heads up digitizing techniques from aerial photos covering the City of Portland Watersheds. Using the 2019 Lidar flight data, new buildings were detected and flagged for input into the layer. Structures that no longer exist are removed by reviewing the aerial imagery yearly at a 1000-footscale in ArcGIS. The layer includes the delineation of parking surfaces, road surfaces and building footprints. All areas are delineated as closed polygons.
Last Dataset Update 02/14/2023 10:31
Last Source Update 02/13/2023 16:08
Maintenance/Update Frequency As needed
Extent Clackamas County, Multnomah County, and Washington County, Oregon
Data Type Vector
Shape Type Polygon
Feature Count 613572
Horizontal Position Accuracy
Horizontal Position Accuracy Link Taxlots
Progress Complete
North Bounding Coordinate 5728991.2314
South Bounding Coordinate 5674472.9033
East Bounding Coordinate -13609892.5554
West Bounding Coordinate -13684185.0864
Theme Keyword(s)
Theme Keyword Thesaurus None
Place Keyword(s) Portland, Multnomah County, Washington County, Clackamas County, Oregon
Place Keyword Thesaurus None
Access Constraints CGIS Do not distribute without Bureau Approval
Use Constraints After permission is granted by responsible bureau, these data are distributed under the terms of the City of Portland Data Distribution Policy. Care was taken in the creation of this data but it is provided "as is".

The City of Portland cannot accept any responsibility for errors, omissions, or positional accuracy.
Source Dataset Type Enterprise Geodatabase
Output Geodatabase EGH_PUBLIC_WGS
Distribution Grid: State plane coordinate system 1983(91).
Units: International feet
Datum: North American Datum of 1983/1991 (HPGN)
Liability: The City of Portland has placed restrictions on the distribution of this data due to security concerns. Access requests will be considered on a case-by-case basis. The information in this file was derived from digital databases on the City of Portland GIS. Care was taken in the creation of this file. The City cannot accept any responsibility for errors, omissions, or positional accuracy. There are no warranties, expressed or implied.
Format: Shapefile or File Geodatabase Feature Class - Data will be provided via City of Portland FTP Site.
Online Resource: http://portlandmaps.com/opendata
Online Instructions: City of Portland Public/Open Data is distributed via the PortlandMaps Open Data Site - http://portlandmaps.com/opendata. Data not available on the PortlandMaps Open Data site can be requested by contacting the City of Portland CGIS Group - maps@portlandoregon.gov
Transfer Size: varies
SPCS Zone Identifier: 5076
Contact(s)
Add
Bureau of Environmental Services
503 823-3132
besgis@portlandoregon.gov
1120 SW Fifth Ave, Suite #600
Portland, OR 97204

City of Portland - BES
503 823-3132
503 823-3132
BESGISUsers@portlandoregon.gov
File(s)
Add
Images
52649.png 121.18Kb X
Lineage
Add
Add

Attribute Tables & Domains

X
impervious_area_bes_pdx
Table Description
Table Jurisdiction
Column Sort Column Name Column Alias Column Type Column Size Domain Value(s) Column Description
Add
1 GENSOURCE GENSOURCE String 5
Add
X
1 SOURCE SOURCE String 15
Add
X
1 UPDTBY UPDTBY String 6
Add
X
1 LASTUPDT LASTUPDT String 15
Add
X
1 created_user created_user String 255
Add
X
1 created_date created_date Date 8
Add
X
1 last_edited_user last_edited_user String 255
Add
X
1 last_edited_date last_edited_date Date 8
Add
X