Description
A polygon feature class showing potential landslide areas. Used to implement and regulate the City of Seattle's Environmentally Critical Areas (ECA) policies. Last updated in 2001 via the Seattle Landslide Study. The original data was created from City of Seattle State Environmental Policy Act (SEPA) maps which table digitized in 1995 by Donald Tubbs. Shannon & Wilson added runoff zones & edge smoothing.
Areas with indications of past landslide activity, such as landslide headscarps and sidescarps, hummocky terrain, areas with geologic conditions that can promote earth movement, and areas with signs of potential landsliding, such as springs, groundwater seepage, and bowed or backtilted trees.
For more information about the definition of potential landslide areas, see Seattle Municipal Code section 25.09.012, Environmentally Critical Areas (ECA) definitions.
Updated as needed.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| CSV | CSV | Open resource | |
| Excel | XLS | Open resource | |
| Feature Collection | Text | Open resource | |
| File Geodatabase | ZIP | Open resource | |
| GeoJSON | GeoJSON | Open resource | |
| GeoPackage | Unknown | Open resource | |
| KML | KML | Open resource | |
| Shapefile | ZIP | Open resource | |
| SQLite Geodatabase | Unknown | Open resource | |
| ArcGIS Hub Dataset | HTML | Open resource | |
| ArcGIS GeoService | JSON | Open resource |