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NPDES Detention Site Polygons
Detention mainlines and polygons within an NPDES system store and reduce energy of wastewater flow to avoid an overflow. -
GSI Appurtenance Points
Drainage and Wastewater Appurtenance Point Presention View -
CSO Basins
Drainage and wastewater area tributary to permitted combined sewer overflow (CSO) overflow points. -
NPDES Detention Site Lines
Detention mainlines and polygons within an NPDES system store and reduce energy of wastewater flow to avoid an overflow. -
Side Sewers and Laterals
This is a large dataset updated quarterly. It is available for download as a zip file through data.seattle.gov:... -
Direct Discharge Areas
Areas where flow of water is over impervious surfaces, ditch/culvert systems or small private drainage systems to a receiving waterbody. -
1999-2013 National Natural Disaster Inventory
The National Disaster inventory is a record of Natural Disasters including floods, thunderstorms, forest fires, mudslides and disease outbreaks etc. The inventory keeps track of...
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