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

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 layer is a component of Countywide General-purpose Map.

The political boundary showing the area that is subject to Metro's regulatory and taxing authority and the area that has elected representation on the Metro Council. The Oregon Legislature drew the Metro boundary that covers the Portland metropolitan area. Date of last data update: 2025-06-23 This is official RLIS data. Contact Person: Al Mowbray al.mowbray@oregonmetro.gov 503-797-1843 RLIS Metadata Viewer: https://gis.oregonmetro.gov/rlis-metadata/#/details/177 RLIS Terms of Use: https://rlisdiscovery.oregonmetro.gov/pages/terms-of-use

Scoggins Dam in northwest Oregon lies within the Gales Creek fault zone (GCF), a northwest-striking system of active faults forming the boundary between the Coast Range and the Tualatin Valley about 25 km east of Portland, Oregon. Geologic mapping published in 2020 shows the dam to lie within a block-faulted releasing stepover between the right-lateral, NW-striking Scoggins Creek and Parsons Creek strands of the GCF. The Scoggins Creek strand is presently mapped beneath the existing dam about 200 m north of the south abutment. Preliminary results from paleoseismic trenching by the U.S. Bureau of Reclamation, Portland State University, and the U.S. Geological Survey indicate that these two major fault strands have had multiple surface rupturing earthquakes in the Holocene. To confirm the accuracy of the 2020 geologic map and the geometry of the GCF in the releasing stepover region, we completed additional geologic mapping of the dam, reservoir, and an alternative dam site downstream between July 2018 and May 2020. Using high-resolution lidar topographic data and satellite imagery on handheld digital tablets, we collected data at ~500 field sites in the heavily forested terrain. We used these detailed field observations to locate and digitally map the main Scoggins Creek and Parsons Creek fault strands, as well as the cross faults linking the two main strands, to produce an improved and more detailed geologic map and cross sections of Scoggins Valley and its existing and proposed dam sites.

This is a 10 meter Hillshade file created by Metro from USGS DEM data provided by the BLM. It covers the 3-county area (Washington, Multnomah, and Clackamas Counties). Date of last data update: 2004 This is official RLIS data. Contact Person: Joe Gordon joe.gordon@oregonmetro.gov 503-797-1587 RLIS Metadata Viewer: https://gis.oregonmetro.gov/rlis-metadata/#/details/2162 RLIS Terms of Use: https://rlisdiscovery.oregonmetro.gov/pages/terms-of-use

Vegetation patches larger than 1/2 acre. Based on information from reference data sources including 6" resolution aerial photos, Parks and Recreation natural area assessments, and vegetation surveys along the banks of the Willamette and Columbia rivers. Vegetation patches area classified as forest, woodland, shrubland, or herbaceous. The mapping area includes all land within the City of Portland and the unincorporated parts of Multnomah County that are administered by the City of Portland.

--Additional Information: Category: Environmental Purpose: For analyzing vegetation within Portland's riparian and upland areas. Developed as an input to the Bureau of Planning's GIS model for identifying significant natural resources.

The key goals of the vegetation mapping project were 1) refine the location of vegetation "patches" of areas previously mapped by Metro; 2) incorporate vegetation maps generated by other agencies such as Portland Parks and Recreation and the Portland Bureau of Environmental Services and refine and improve that information where necessary; 3) map vegetation patches meeting Portland’s criteria for inclusion in the natural resource inventory a 1/2 acre minimum patch size versus the 1 to 2 acre patch size used by Metro for the regional dataset; 4) map all vegetation within a 1/4 mile of a surface stream, wetland, or regionally significant habitat resources included in Metro’s inventory; 5) classify the vegetation into four NVCS classes: forest, woodland, shrubland, and herbaceous; 6) further classify vegetation as either "natural/semi-natural" or "cultivated"; and 7) update, refine and improve the vegetation data annually as new aerial photos become available. Update Frequency: As needed

© City of Portland, Oregon

This layer is sourced from CGIS Open Data.

This data layer is an element of the Oregon GIS Framework. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation.

Census tracts are small, relatively permanent statistical subdivisions of a county or equivalent entity, and were defined by local participants as part of the 2020 Census Participant Statistical Areas Program. The Census Bureau delineated the census tracts in situations where no local participant existed or where all the potential participants declined to participate. The primary purpose of census tracts is to provide a stable set of geographic units for the presentation of census data and comparison back to previous decennial censuses. Census tracts generally have a population size between 1,200 and 8,000 people, with an optimum size of 4,000 people. When first delineated, census tracts were designed to be homogeneous with respect to population characteristics, economic status, and living conditions. The spatial size of census tracts varies widely depending on the density of settlement. Physical changes in street patterns caused by highway construction, new development, and so forth, may require boundary revisions. In addition, census tracts occasionally are split due to population growth, or combined as a result of substantial population decline. Census tract boundaries generally follow visible and identifiable features. They may follow legal boundaries such as minor civil division (MCD) or incorporated place boundaries in some States and situations to allow for census tract-to-governmental unit relationships where the governmental boundaries tend to remain unchanged between censuses. State and county boundaries always are census tract boundaries in the standard census geographic hierarchy. In a few rare instances, a census tract may consist of noncontiguous areas. These noncontiguous areas may occur where the census tracts are coextensive with all or parts of legal entities that are themselves noncontiguous. For the 2010 Census and beyond, the census tract code range of 9400 through 9499 was enforced for census tracts that include a majority American Indian population according to Census 2000 data and/or their area was primarily covered by federally recognized American Indian reservations and/or off-reservation trust lands; the code range 9800 through 9899 was enforced for those census tracts that contained little or no population and represented a relatively large special land use area such as a National Park, military installation, or a business/industrial park; and the code range 9900 through 9998 was enforced for those census tracts that contained only water area, no land area.

Graph and download economic data for Estimate of Median Household Income for Multnomah County, OR (MHIOR41051A052NCEN) from 1989 to 2023 about Multnomah County, OR; Portland; OR; households; median; income; and USA.

Graph and download economic data for 90% Confidence Interval Upper Bound of Estimate of Median Household Income for Multnomah County, OR (MHICIUBOR41051A052NCEN) from 1989 to 2023 about Multnomah County, OR; Portland; OR; households; median; income; and USA.

Street centerline network for the City of Portland, Multnomah County, Clackamas County and Washington County developed for geocoding purposes. This dataset has a character (textual) street number field to better allow for locating addresses that have leading zeros (e.g., 0680 SW Bancroft St.). This dataset does not yet include the data fields and structure necessary for performing routing operations.-- Additional Information: Category: Transportation - Streets Purpose: Provides a dataset including all address segments to be used for geocoding (locating) addresses in the Portland Region. Includes the capability to search those addresses whose street number begins with a zero. Update Frequency: Weekly-- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=52062

Lidar-derived elevation data for the 2019 Oregon Lidar Consortium (OLC) West Metro 3DEP project area. The project area (PA) encompasses 486,551 acres. Data are within Multnomah County, Oregon. The nominal pulse density is eight pulses per square meter. Points that were determined to be geometrically invalid, or invalid surface returns, were removed from the data set. The hydro-flattened bare e...

County tax assessors tax lots, including rights of way, with associated property data, excluding ownership information. Selected items from each county assessor's file are included and standardized for all three counties. The tax lot spatial features and data associated with the tax lot are compiled by Metro from existing records created and maintained by the local county assessment and taxation offices. This is a downloadable zip file that includes the taxlots shapefile and layer files for visualizing taxlots with or without right of ways. Use the original feature layers if viewing the layers in ArcGIS Online: "Taxlots (Public)" or "Taxlots with Right of Way (Public)." Date of last data update: 2025-07-18 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/3733 RLIS Terms of Use: https://rlisdiscovery.oregonmetro.gov/pages/terms-of-use

Geospatial data from City of Portland, Oregon. Export to CAD, GIS, PDF, KML and CSV, and access via API.

This layer is sourced from City of Portland Sewer & Stormwater Utilities.

© City of Portland, Oregon

Graph and download economic data for Poverty Universe, All Ages for Multnomah County, OR (PUAAOR41051A647NCEN) from 1998 to 2023 about Multnomah County, OR; Portland; OR; poverty; and USA.

Natural color ortho-rectified digital imagery for the Portland metropolitan area. The digital aerial imagery was acquired in summer leaf-on conditions July 1-2, 2013 . The imagery is provided as a cached web map service. The original imagery included near infrared and other related products. Contact the DRC for more information. Date of last data update: 2013-07-01 This is official RLIS data. Contact Person: Samantha Wright samantha.wright@oregonmetro.gov 503-797-1594 RLIS Metadata Viewer: https://gis.oregonmetro.gov/rlis-metadata/#/details/3233 RLIS Terms of Use: https://rlisdiscovery.oregonmetro.gov/pages/terms-of-use

Points representing the locations of verified active addresses in the Portland Metro Region. Addresses been culled from the City of Portland Master Address Repository, Multnomah County Assessor Records and the RLIS Master Address Points dataset.--Additional Information: Category: Address Purpose: For mapping, geocoding, mailing, and analysis of addresses in the Portland Metro Region. Update Frequency: Twice Weekly-- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=54157

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.

County Warning Area and county boundaries for NWS Portland, Oregon Weather Forecast Office