Pierce County boundary polygon is based on geographic features mentioned in the legal description, and tax parcels. Please note that some geographic features like rivers have moved which may cause changes to the county boundary. The metadata includes significant detail so please read metadata for additional information (https://matterhorn.co.pierce.wa.us/GISmetadata/pdbis_county_boundary_poly.html). Any data download constitutes acceptance of the Terms of Use (https://matterhorn.co.pierce.wa.us/Disclaimer/PierceCountyGISDataTermsofUse.pdf).

Tax parcel polygons throughout Pierce County, including condos, but not including mobile homes which can be found in the "Mobile Home" layer instead. Parcel number is the unique identifier and additional parcel attribution can be found here (https://www.piercecountywa.gov/736/Data-Downloads). Click the link for Use Code Descriptions (https://www.piercecountywa.gov/DocumentCenter/View/604/Use-Code-Listing?bidId=). Please read metadata (https://matterhorn.piercecountywa.gov/GISmetadata/pdbparc_taxparcel.html) for additional information. Any use or data download constitutes acceptance of the Terms of Use (https://matterhorn.piercecountywa.gov/disclaimer/PierceCountyGISDataTermsofUse.pdf). If you have questions or need supplemental information, please call the Assessor-Treasurer Operations Team at 253-798-3134.

This dataset geographically displays themes from the County Road Administration Board (CRAB) GIS-Mo database. Which replaced the old Mobility database.Please read the metadata (https://matterhorn.piercecountywa.gov/GISmetadata/pdbtrans_GISMO_tblSpeed.html) for additional information. Any data download constitutes acceptance of the Terms of Use (https://matterhorn.piercecountywa.gov/disclaimer/PierceCountyGISDataTermsofUse.pdf).

Pierce County boundary line based on geographic features mentioned in the legal description, and tax parcels. Please note that some geographic features like rivers have moved which may cause changes to the county boundary.Please read the metadata (https://matterhorn.piercecountywa.gov/GISmetadata/pdbis_county_boundary_line.html) for additional information. Any data download constitutes acceptance of the Terms of Use (https://matterhorn.piercecountywa.gov/disclaimer/PierceCountyGISDataTermsofUse.pdf).

As part of a Channel Migration Zone Study, GeoEngineers, Inc. was contracted by Pierce County, Public Works Surface Water Management formerly “Water Programs” Division to create a series of shapefiles including the SPC_Migration_Potential_Areas.shp. Pierce_Migration_Potential_Areas.shp combines the include severe, moderate or low migration potential areas. GeoEngineers, Inc. completed migration potential studies of the White, Puyallup and Carbon Rivers (completed 2003 adopted 2005), South Prairie Creek (completed 2005 adopted 2017) and Upper Nisqually River (completed 2007 adopted 2017). These were accepted by SWM and Adopted by County Council.The MPA delineation involved identifying severe, moderate and low migration potential areas within the delineated CMZ. The MPA delineation approach is similar to that employed in our CMZ analysis; that future rates and character of migration will be similar to those of the past for similar water discharges, sediment influx, and debris entrainment conditions. This analysis was also based on the absence of levees, revetments and other confining structures. The width of each MPA was measured, based on delineation criteria developed specifically for this project, and then adjusted to accommodate geomorphic conditions not accounted for in the maximum migration rates. Criteria developed for mapping severe, moderate and low MPA are provided in the following paragraphs: Severe MPA includes the area lying inside the HCOT, and an area immediately outside the HCOT boundary equivalent to a distance the channel could travel in a specified period. The extent of the Severe Migration Potential Area outside the HCOT boundary is determined by two criteria. The first criterion is the distance the outside channel edge could travel in 10 years of steady lateral migration away from the HCOT boundary (Maximum lateral migration rates multiplied by a ten- year period). The second is defined by the distance the outside channel edge could travel in storm single event (i.e. maximum overnight rate) from the current channel position (2002). The landward most boundary of the two criteria defines the Severe Migration Potential Area.Moderate MPA includes areas adjacent to the outside edge of the severe migration potential area. The width of the moderate migration potential area is determined by the distance the outside channel edge could travel in five years (for South Prairie Creek 10 years) of steady lateral migration beyond the outside edge of the severe migration potential area. The CMZ boundary will serve as the outside edge of the moderate migration potential boundary at sites where the distance between the severe migration potential boundary and the CMZ boundary represents less the five years (for South Prairie Creek 10 years)of steady lateral migration. Moderate migration potential areas are not included at sites where the outside edge of the severe migration potential area is determined by the location of the CMZ boundary. The rate of migration used in the calculation is the maximum average rate of migration for each geomorphic reach (measured as described above). In some places the width of the Moderate Migration Potential Area may be modified based on geologic interpretation, professional judgment. Low MPA includes areas adjacent to the outside edge of the moderate migration potential area. The extent of the Low Migration Potential Area beyond the moderate migration potential boundary will be determined by CMZ boundary, as determined by our CMZ evaluation. Low migration potential areas will not be included at sites where the outside edge of either a severe or moderate migration potential area is determined by the location of the CMZ boundary. The most common adjustments typically involved widening the moderate MPA to include ancient abandoned channel deemed capable of arresting main stem flow in an avulsion event. Other common Moderate MPA adjustments involved increasing or decreasing the base width to accommodate the following conditions; The presence of native erosion resistant bank materials, such as the Osceola Mudflow or local downstream or oblique direction of meander bend migration.

Please read metadata for additional information (https://matterhorn.co.pierce.wa.us/GISmetadata/pdbswm_regulated_cmz_floodway_all.html). Any data download constitutes acceptance of the Terms of Use (https://matterhorn.co.pierce.wa.us/Disclaimer/PierceCountyGISDataTermsofUs (pdf).

The County’s National Pollutant Discharge Elimination System and State Waste Discharge General Permit (NPDES) permit requires that Pierce County maintain mapping data for all known MS4 outfalls and discharge points. The permit requires basin delineation for all tributary conveyances to all known outfalls and discharge points with a 24-inch nominal diameter or larger, or an equivalent cross-sectional area for non-pipe systems.In September 2016, Pierce County Department of Public Works (County) hired Herrera Environmental Consultants (Herrera) to delineate watershed and drainage basin boundaries in GIS to meet the mapping requirements of the current NPDES Phase I Municipal Stormwater Permit. In 2017, Herrera produced an amendment to the original SOW to assist the County with a) conducting a review of 570 existing mapped outfall and discharge points for accuracy and completeness and b)mapping all remaining outfall and discharge points within Pierce County (excluding cities).Herrera has produced a Technical Memorandum documenting all methods and results entitled “Pierce County Drainage Basin and Watershed Delineation Summary Memorandum” (dated December 28, 2017). Please read metadata for additional information (https://matterhorn.co.pierce.wa.us/GISmetadata/pdbswm_watersheds_hec.html). Any data download constitutes acceptance of the Terms of Use (https://matterhorn.co.pierce.wa.us/Disclaimer/PierceCountyGISDataTermsofUse.pdf).

Geospatial data about Pierce County, Washington Zip Codes. Export to CAD, GIS, PDF, CSV and access via API.

This is a comprehensive building address point layer for Pierce County, Washington. Every unique house number has a point located within the building footprint of the addressed structure (where possible). Multi-unit structures, mobile home parks, and buildings with the same street address are further identified by mailstop in the attribute table. Some vacant parcels may or may not have an assigned temporary address point. A permanent address will be assigned to a vacant parcel if a permitted structure is built on that parcel. Please read metadata for additional information (https://matterhorn.piercecountywa.gov/GISmetadata/pdbis_buildingaddress_public.html). Any use or data download constitutes acceptance of the Terms of Use (https://matterhorn.piercecountywa.gov/disclaimer/PierceCountyGISDataTermsofUse.pdf).

Geospatial data about Pierce County, Washington Zoning. Export to CAD, GIS, PDF, CSV and access via API.

Geospatial data about Pierce County, Washington Parcels. Export to CAD, GIS, PDF, CSV and access via API.

Geospatial data about Pierce County, Washington City Annexations. Export to CAD, GIS, PDF, CSV and access via API.

Municipal Court jurisdictional boundary polygons within Pierce County (https://www.courts.wa.gov/court_dir/orgs/286.html). Please read metadata for additional information (https://matterhorn.piercecountywa.gov/GISmetadata/pdbis_municipal_courts.html). Any use or data download constitutes acceptance of the Terms of Use (https://matterhorn.piercecountywa.gov/disclaimer/PierceCountyGISDataTermsofUse.pdf).

Geospatial data about Pierce County, Washington Address Points. Export to CAD, GIS, PDF, CSV and access via API.

Zipcode polygons throughout Pierce County. Data was acquired from Zip+4 Address Information System, and then adjusted to ensure parcels fell in their correct zipcode. This data should be cross-referenced with the USPS for the most current street and site address changes. Please see metadata for additional information (https://matterhorn.co.pierce.wa.us/GISmetadata/pdbis_zip_codes.html).Source: https://gisdata-piercecowa.opendata.arcgis.com/datasets/zip-codes

Geospatial data about Pierce County, Washington Railroads. Export to CAD, GIS, PDF, CSV and access via API.

Polygons of active and historic large lot development in unincorporated Pierce County. Please read metadata (https://matterhorn.piercecountywa.gov/GISmetadata/pdbplandev_large_lots.html) for additional information. Any use or data download constitutes acceptance of the Terms of Use (https://matterhorn.piercecountywa.gov/Disclaimer/PierceCountyGISDataTermsofUse.pdf).