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/155 for the complete metadata.-- Additional Information: Category: Boundary Purpose: For use as a "base" layer on map products to shade county areas and in analysis to capture areas within each county. Update Frequency: None planned-- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=155

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 Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=53509

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

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

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

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

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.

This EnviroAtlas dataset presents environmental benefits of the urban forest in 1176 block groups in Portland, Oregon. Carbon attributes, temperature reduction, pollution removal and value, and runoff effects are calculated for each block group using i-Tree models (www.itreetools.org), local weather data, pollution data, EPA provided city boundary and land cover data, and U.S. Census derived block group boundary data. This dataset was produced by the USDA Forest Service with support from The Davey Tree Expert Company to support research and online mapping activities related to EnviroAtlas. EnviroAtlas (https://www.epa.gov/enviroatlas) allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the contiguous United States. The dataset is available as downloadable data (https://edg.epa.gov/data/Public/ORD/EnviroAtlas) or as an EnviroAtlas map service. Additional descriptive information about each attribute in this dataset can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).

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

This layer is sourced from Public Safety Boundaries.

© City of Portland, Oregon

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

Polygons dividing the city into 6 administrative sections. (SE, NE, N, NW, SW, S).-- Additional Information: Category: Boundary Purpose: For mapping the distinct sextants of the City of Portland, with the names of the sextants corresponding to the street direction prefixes. Update Frequency: As Needed-- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=54578

Portland City Council Districts. Established by the Independent District Commission, August 21, 2023.-- Additional Information: Category: Boundary Purpose: Portland City Council Districts comprised of census blocks from the 2020 Decennial Census P.L. 94-171 Redistricting Summary File. The configuration of the districts was established by the Independent District Commission via a series of work sessions, trainings, and public hearings that occurred from February 15, 2023 to August 21,2023. The districts were drawn to be consistent with state and federal laws and were approved by the Independent District Commission on August 21, 2023. The Council District Boundaries were developed form the 2020 census blocks from the Census Bureau. Those geometries might not align with other features. Legal descriptions of the districts can be found at: https://www.portland.gov/transition/districtcommission/documents/idc-legal-description-districts/download Supplemental Information: Recommend spatial location queries using 'Have their center in'. Update Frequency: As Needed-- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=61106

Campus Institution boundaries in Chapter 150 of Zoning Code.-- Additional Information: Category: Zoning Code Purpose: Map campus boundaries. Update Frequency: Unknown-- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=54603

The City boundaries layer 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.

Portland Liaison District boundaries and contact information. Boundaries are generally based off neighborhoods.-- Additional Information: Category: Boundary Purpose: Map Portland's Liaison Districts and provide contact info. Update Frequency: As needed-- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=52742

Willamette River Study Boundary by reach (North, Central, South Waterfront, South) for Planning purposes.-- Additional Information: Category: Boundary Purpose: Map river reach boundaries defined for River Environmental Planning. Update Frequency: Infrequent-- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=60873

Identifies extent of historical resources. It includes all area defined in the original nomination form.-- Additional Information: Category: Zoning Purpose: Define extent of historical resource protection. Update Frequency: As Needed-- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=54667

Portland's business districts and neighorhoods inherently support each other in many ways. Since 1986 Venture Portland has invested in the smart, strategic growth of Portland’s unique neighborhood business districts. These dynamic districts, which together make up a majority of the city’s businesses and nearly half of its jobs, play a vital role in Portland’s economic prosperity and collectively represent local, regional, national and international demand for goods and services.-- Additional Information: Category: Boundary Purpose: For mapping and analysis of business districts in Portland. Update Frequency: As Needed-- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=53652