ECA Known Slide Scarps

Displays areas of landslide events based on a Seattle Landslide Study completed by Shannon and Wilson.A polygon feature class showing landslide event inventory. Used to implement and regulate the City of Seattle's Environmentally Critical Areas (ECA) policies. This layer includes a more comprehensive collection of slide events maintained by Shannon and Wilson via the Seattle Landslide Study which included slide data through June 1999.The Known Slide layer was most recently updated under SDCI Director's Rule 12-2019.For more information about the definition of known slide areas, see Seattle Municipal Code section 25.09.012, Environmentally Critical Areas (ECA) definitions.Updated as needed.

Data and Resources

Additional Info

Field Value
Source https://cos-data.seattle.gov/resource/erdu-ce8m
Author Allen Grissom
Last Updated July 22, 2025, 19:42 (UTC)
Created July 22, 2025, 19:42 (UTC)
Contact Email mailto:mapgis.mapgis@seattle.gov
Contact Name SDCI_SeattleCityGIS
Geographic Coverage -122.4252,47.5037,-122.2755,47.7331
Homepage https://data-seattlecitygis.opendata.arcgis.com/datasets/SeattleCityGIS::eca-known-slide-scarps-1
Issued 2023-07-06T18:26:16.000Z
Last Update 2024-08-08T20:29:39.608Z
License <span style='font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;'>The City of Seattle makes no representation or warranty as to its accuracy, and in particular, its accuracy as to labeling, dimensions, contours, property boundaries, or placement or location of any map feature thereof.</span>
Public Access Level public
Publisher City of Seattle ArcGIS Online
Theme geospatial
Unique Identifier https://www.arcgis.com/home/item.html?id=85fb69183fde46268c40227266901803&sublayer=3
harvest_object_id 584b7fe1-db02-449d-bf19-70e456868023
harvest_source_id 5365fd4f-4dee-4a64-8b1c-c2025205baa9
harvest_source_title seattle