GIS Data Resources

The following are commonly requested GIS data sets relevant to Seattle Public Utilities that may be used for mapping and geographic analysis. These data sets are also available for external, non-city uses through a licensing program administered by the GIS Products and Services Unit. Please email gismap@seattle.gov if you have questions.

Infrastructure Data Layers

• Sewer and drainage
  • Combined sewer overflow basins
  • Ditches and culverts
  • Drainage basins
  • Sewer and drainage mainlines
  • Sewer and drainage mainline point features
  • Sewer and drainage laterals
  • Sewer and drainage stormwater outfalls
  • City sewer and drainage outfalls regulated by Federal EPA (NPDES)
  • Sewer and drainage structures
• Water
  • Hydrants
  • Pressure zones
  • Water system lines
  • Water system appurtenances
  • Water system service connections
  • Water system facilities
  • Water purveyor boundaries

Download / Order

The City of Seattle offers GIS data services available for use in addition to data download. Browse the Seattle GIS data. GIS utility infrastructure data within Seattle can also be provided on a project-specific basis and licensed for specific use. Request custom data sets.