SDOT Snow and Ice Level of Service Treatment and Routes, based on the Winter Weather Storm Response Plan. Level of Service is a hierarchy of snow and ice response in achieving bare and wet pavement road condition. Annual snow and ice routes maintained by Seattle Department of Transportation. The snow and ice routes are displayed in the Winter Weather Storm Response Map (external and internal). 

| https://data-seattlecitygis.opendata.arcgis.com/datasets?q=spu
| Lifecycle status: Production
| Purpose: to enable open access to SPU GIS data. This website includes many utility datasets from categories such as DSO, Drainage and Wastewater infrastructure, and Storm Infrastructure. Many of this datasets are linked from this website.