This data is maintained by and obtained from Metro Data Resource Center. Please go to http://rlisdiscovery.oregonmetro.gov/metadataviewer/display.cfm?meta_layer_id=123 for the complete metadata.

--Additional Information: Category: Boundary Purpose: No purpose information available. Update Frequency: Unknown

© City of Portland, Oregon

This data is maintained by and obtained from Metro GIS. Click the link above to view the Metro GIS metadata for this dataset.

This data is maintained by and obtained from Metro Data Resource Center. Please go to https://gis.oregonmetro.gov/rlis-metadata/#/details/123 for the complete metadata.-- Additional Information: Category: Boundary Purpose: For mapping of jurisdictional boundaries in the Portland region. Update Frequency: Quarterly-- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=53542

Portland Neighborhood association boundaries. BPS maintains GIS data under direction of ONI.-- Additional Information: Category: Boundary Purpose: Mapped by-law boundaries of Portland neighborhoods Update Frequency: As Needed-- Metadata Linkhttps://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=53509

This layer is a component of Countywide General-purpose Map.

This data is maintained by and obtained from Metro Data Resource Center. Please go to http://rlisdiscovery.oregonmetro.gov/metadataviewer/display.cfm?meta_layer_id=179 for the complete metadata.

--Additional Information: Category: Boundary Purpose: No purpose information available. Update Frequency: Irregular

© City of Portland, Oregon

This layer is sourced from CGIS Open Data.

Incorporated city boundaries in and around the Portland metropolitan area, derived from Boundary Commission and Oregon Secretary of State filed annexations. Date of last data update: 2025-04-28 This is official RLIS data. Contact Person: Clint Chiavarini clinton.chiavarini@oregonmetro.gov 503-797-1738 RLIS Metadata Viewer: https://gis.oregonmetro.gov/rlis-metadata/#/details/1436 RLIS Terms of Use: https://rlisdiscovery.oregonmetro.gov/pages/terms-of-use

Portland IDC Approved City Council Districts With Neighborhood boundariesWWW.PORTLAND.GOV/Auditor Created Date: 10-25-2023 WWW.PORTLAND.GOV/GIS Email: Maps@portlandoregon.gov

MCDD district boundaries

© Multnomah County Drainage District 1880 NE Elrod Dr., Portland, OR 97211

Business District boundaries in Portland, OR.

© City of Portland, Oregon

The basis for these features is U.S. Geological Survey Scientific Investigation Report 2017-5024 Flood Inundation Mapping Data for Johnson Creek near Sycamore, Oregon. The domain of the HEC-RAS hydraulic model is a 12.9 mile reach of Johnson Creek from just upstream of SE 174th Avenue in Portland, Oregon to its confluence with the Willamette River. Some of the hydraulics used in the model were taken from Federal Emergency Management Agency, 2010, Flood Insurance Study, City of Portland, Oregon, Multnomah, Clackamas and Washington Counties, Volume 1 of 3, November 26, 2010. The Digital Elevation Model (DEM) utilized for the project was developed from LiDAR data flown in 2015 and provided by the Oregon Department of Geology and Mineral Industries. Bridge decks are generally removed from DEMs as standard practice. Therefore, these features may be shown as inundated when they are not. Judgement should be used when estimating the usefulness of a bridge during flood flow. Comparing the bridge to the surrounding ground can be more informative in this respect than simply looking at the bridge itself. Two model plans were used in the creation of the flood layers. The first is a stable model plan using unsteady flow in which the maximum streamflow is held in place for a long period of time (a number of days) in order to replicate a steady model using an unsteady plan. The stable model plan produced the areas of uncertainty contained in the sycor_breach.shp shapefile. The second is an unstable model plan that uses unsteady flow in which the full hydrograph (rising and falling limb) is represented based on the hydrograph shape of the December 2015 peak annual flood. The unstable model plan produced the flood extent polygons contained in the sycor.shp shapefile and the depth rasters and represents the best estimate of flood inundation for the given streamflow at U.S. Geological Survey streamgage 14211500.

© City of Portland, Oregon

© City of Portland, Oregon

Taxlot or parcel boundaries associated with Portland Parks & Recreation management. Attribute values are joined from PP&R's Property Management database.-- Additional Information: Category: Parks Purpose: Represent taxlot or parcel boundaries of fee simple lands which PP&R has purchased, manages, or otherwise been assigned some type of responsibility. Update Frequency: As Needed-- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=52962

Area in which urban services are provided by the City of Portland. This includes some parts of Washington, Clackamas, and unincorporated Multnomah County.-- Additional Information: Category: Boundary Purpose: For mapping and analysis of areas where urban services are provided by the City of Portland. Update Frequency: Quarterly-- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=52201

A comprehensive dark gray basemap with labels for the Portland metropolitan region with annotation. Includes the following layers: city boundaries, county boundaries, major arterials & streets, outdoor recreation and conservation areas (ORCA), rivers & streams, taxlots, building footprints, and airports. Also includes county, city, highway, major arterial & street, ORCA and river labels. Some data layers are scale dependent and only visible at larger scales. Date of last data update: 2025-02-11 This is official RLIS data. Contact Person: Jihoon Son jihoon.son@oregonmetro.gov 503-797-1589 RLIS Metadata Viewer: https://gis.oregonmetro.gov/rlis-metadata/#/details/3750 RLIS Terms of Use: https://rlisdiscovery.oregonmetro.gov/pages/terms-of-use

A simplified comprehensive basemap for the Portland metropolitan region without annotation. Includes the following layers: city boundaries, county boundaries, major arterials & streets, trails, outdoor recreation and conservation areas (ORCA), rivers & streams, and airports. Some data layers are scale dependent and only visible at larger scales. Designed to be layered with the baseAnno and baseActive basemaps. Date of last data update: 2025-05-07 This is official RLIS data. Contact Person: Christine Rutan christine.rutan@oregonmetro.gov 503-797-1669 RLIS Metadata Viewer: https://gis.oregonmetro.gov/rlis-metadata/#/details/3703 RLIS Terms of Use: https://rlisdiscovery.oregonmetro.gov/pages/terms-of-use

A full comprehensive basemap for the Portland metropolitan region with annotation. Includes the following layers: city boundaries, county boundaries, major arterials & streets, outdoor recreation and conservation areas (ORCA), rivers & streams, hillshade, vegetation/land cover, taxlots, building footprints, and airports. Also includes county, city, highway, major arterial & street, ORCA, and river labels. Some data layers are scale dependent and only visible at larger scales. This is a combination of the base & baseActive basemaps. Date of last data update: 2025-05-08 This is official RLIS data. Contact Person: Christine Rutan christine.rutan@oregonmetro.gov 503-797-1669 RLIS Metadata Viewer: https://gis.oregonmetro.gov/rlis-metadata/#/details/3704 RLIS Terms of Use: https://rlisdiscovery.oregonmetro.gov/pages/terms-of-use

A full comprehensive basemap for the Portland metropolitan region with annotation. Includes the following layers: city boundaries, county boundaries, major arterials & streets, outdoor recreation and conservation areas (ORCA), rivers & streams, hillshade, taxlots, airports, schools, hospitals, libraries, fire stations, city halls, transit centers, bus lines and stops, light rail lines & stops, tram, and railroads. Also includes county, city, highway, major arterial & street, ORCA, and river labels. Some data layers are scale dependent and only visible at larger scales. This basemap is similar to baseAll but with different symbology and additional points of interest and transit features. Date of last data update: 2025-05-07 This is official RLIS data. Contact Person: Christine Rutan christine.rutan@oregonmetro.gov 503-797-1669 RLIS Metadata Viewer: https://gis.oregonmetro.gov/rlis-metadata/#/details/3709 RLIS Terms of Use: https://rlisdiscovery.oregonmetro.gov/pages/terms-of-use

Neighborhoods regions. Overlapping areas assigned to each neighborhood individually creating overlaps in the data.-- Additional Information: Category: Boundary Purpose: Identifies full area of each neighborhood individually with ID number to assign contact information. Update Frequency: As Needed-- Metadata Link https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=54371

Analysis of ‘Town Lines’ provided by Analyst-2 (analyst-2.ai), based on source dataset retrieved from https://catalog.data.gov/dataset/0260e894-1b0e-4a58-a53b-1e898560e443 on 27 January 2022.

--- Dataset description provided by original source is as follows ---

Connecticut Town Line includes the line features of a layer named Town. Town is a 1:24,000-scale, polygon and line feature-based layer that includes state, county and town (municipal) boundary features depicted on the U.S. Geological Survey (USGS) 7.5 minute topographic quadrangle maps for the State of Connecticut. This layer only includes information for Connecticut. Line features include State, county, and town (municipal) boundaries. Polygon features depict the geographic areas for individual towns (municipalities). A town may be represented by more than one polygon feature. For example, in addition to representing the portion of a town on the mainland, a polygon feature may also define an island along the coast of Long Island Sound. The layer is based on information from USGS topographic quadrangle maps published between 1969 and 1984 and latitude and longitude coordinates that define the boundary between the states of Connecticut and New York in Long Island Sound. Attribute information is comprised of codes to classify and cartographically symbolize political boundaries by type and identify the geographic areas encompassed by individual towns. Polygon feature attributes include state, county, and town codes and names. Feature length and geographic area are encoded for linear and polygon features, respectively. This layer was originally published in 1994. With the exception of the Middletown-Portand town boundary, the 2005 edition, includes the same features originally published in 1994. The Middletown-Portand was corrected and changed from its location, as depicted on the USGS topographic quadrangle maps, from along the banks of the Connecticut River in Portand to the middle of the Connecticut River south of Wilcox Island to the Pecausett Meadows area in Portland. Some attribute information has been slightly modified and made easier to use.

Connecticut Town Polygon includes the polygon features of a layer named Town. Town is a 1:24,000-scale, polygon and line feature-based layer that includes state, county and town (municipal) boundary features depicted on the U.S. Geological Survey (USGS) 7.5 minute topographic quadrangle maps for the State of Connecticut. This layer only includes information for Connecticut. Line features include State, county, and town (municipal) boundaries. Polygon features depict the geographic areas for individual towns (municipalities). A town may be represented by more than one polygon feature. For example, in addition to representing the portion of a town on the mainland, a polygon feature may also define an island along the coast of Long Island Sound. The layer is based on information from USGS topographic quadrangle maps published between 1969 and 1984 and latitude and longitude coordinates that define the boundary between the states of Connecticut and New York in Long Island Sound. Attribute information is comprised of codes to classify and cartographically symbolize political boundaries by type and identify the geographic areas encompassed by individual towns. Polygon feature attributes include state, county, and town codes and names. Feature length and geographic area are encoded for linear and polygon features, respectively. This layer was originally published in 1994. With the exception of the Middletown-Portand town boundary, the 2005 edition, includes the same features originally published in 1994. The Middletown-Portand was corrected and changed from its location, as depicted on the USGS topographic quadrangle maps, from along the banks of the Connecticut River in Portand to the middle of the Connecticut River south of Wilcox Island to the Pecausett Meadows area in Portland. Some attribute information has been slightly modified and made easier to use.

--- Original source retains full ownership of the source dataset ---