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SR530 Landslide - Scientific Information

Source of information is USGS unless otherwise noted. Definition of Source Abbreviations Arrow

River Data

12166150 North Fork Stillaguamish River near Swede Heaven, WA
(gage height, turbidity)
12166185 North Fork Stillaguamish River at C-Post Bridge near Oso, WA
(gage height)
12166190 North Fork Stillaguamish River Northeast Pooled Slide Area near Oso, WA
(lake elevation) (station discontinued June 10, 2014)
12166200 North Fork Stillaguamish River East Pooled Slide Area near Oso, WA
(lake elevation, water temperature) (station discontinued May 7, 2014)
12166220 North Fork Stillaguamish River SW Pooled Slide Area near Oso, WA
(lake elevation) (station discontinued April 25, 2014)
12166240 North Fork Stillaguamish River at Rowan, WA
(gage height)
12166300 North Fork Stillaguamish River near Oso, WA
(gage height, turbidity, specific conductance, dissolved oxygen)
05B090 North Fork Stillaguamish River at Oso (source: WADOE)
(discharge, gage height, precipitation, water and air temperature)
12166400 North Fork Stillaguamish River at Whitehorse Trail near Oso, WA
(gage height)
12166495 North Fork Stillaguamish River at Oso, WA
(gage height)
12167000 North Fork Stillaguamish River near Arlington, WA
(discharge, gage height)
12170300 Stillaguamish River near Stanwood, WA (gage affected by tides)
(gage height, turbidity, water temperature and velocity)

Preliminary Map with Locations of Selected Gages Listed in Table
Preliminary Map with Locations of Selected Gages near the Landslide Listed in Table

River Forecast North Fork Stillaguamish River near Arlington (source: NWS)
Special Forecast Service for North Fork Stillaguamish River (source: NWS)

Landslide Simulations

Preliminary Computer Simulation of the SR530 Landslide

Geospatial Data

Post-Landslide Imagery, April 1, 2014 (source: Google)
SR530 Landslide Area Interactive Map (source: Snohomish Co.)
GeoPlatform Oso Landslide Service (source: FEMA)
OFR 2014-1065 Preliminary Interpretation of Pre-2014 Landslide Deposits in the Vicinity of Oso, Washington
OFR 2014-1065 Shapefiles (ZIP - 21.4MB)
Mount Higgins 7.5-minute Quadrangle -- Multiple Interactive Data Layers (GeoPDF - 26MB)
Geologic Map of the Mount Higgins 7.5-minute Quadrangle (source: WADNR) (PDF - 1.6MB)
Landslide Overview Map of the Conterminous United States

Satellite Images

Pre-Landslide: Feb. 27, 2014 (Landsat 7)
Pre-Landslide: Feb. 28, 2014 (Landsat 8)
Post-Landslide: March 23, 2014 (Landsat 8)
Post-Landslide: March 24, 2014 (Landsat 7)
Post-Landslide: March 31, 2014 (Terra 1) (source: NASA)
Post-Landslide: March 31, 2014 (Quickbird 2) (source: NGA and DigitalGlobe)
Post-Landslide: March 31, 2014 (Worldview 2) (source: NGA and DigitalGlobe)
Post-Landslide: April 13, 2014 (Quickbird 2) (source: NGA and DigitalGlobe)
Arrow Instructions for Downloading Images
Arrow Instructions for Requesting Additional Images

Seismic Data

Seismic Signals Generated by the Oso Landslide (PDF - 3.5MB) (source: UW)


Landslide Detail - March 22, 2014 (source: Seattle Times)
Landslide Area with Parcels and Landslide Extent Superimposed (PDF - 8.6MB) (source: Snohomish Co.)
Before-and-After Graphic (source: Seattle Times)
Landslide Area - March 24, 2014

Landslide and Fluvial Geomorphology Resources

USGS Landslide Hazards Program
Landslide Hazards of Seattle, WA, and Vicinity
Debris Flow Science (video)
Landslide Hazards (video)
Professional Pages of Selected USGS Scientists Providing Assistance with the SR530 Landslide
Jonathan Godt, landslides
Rex Baum, landslides
Dick Iverson, landslides & debris flows (page includes videos of experimental debris flows)
Chris Magirl, fluvial geomorphology
Jim O'Connor, fluvial geomorphology

Bibliography (in progress)

Multiple Documents Related to the Stillaguamish River Ecosystem Restoration Study (source: USACE)
Engel, J., 2006, Steelhead Landslide, January 25, 2006 (chronology and images) (source: Stillaguamish Tribe)

Haugerud, R.A., 2014, Preliminary interpretation of pre-2014 landslide deposits in the vicinity of Oso, Washington: U.S. Geological Survey Open-File Report 2014-1065, 4 p.,

Iverson, R.M., 2014, Debris flows: behaviour and hazard assessment: Geology Today, v. 30, no. 1, p. 15-20.

Iverson, R.M., and George, D.L., 2014, Landslides that liquefy: implications of the 2014 Oso disaster [abs.]: Geological Society of America, Paper No. 248-5,

Iverson, R.M., George, D.L., Allstadt, K., Reid, M.E., Collins, B.D., Vallance, J.W., Schilling, S.P., Godt, J.W., Cannon, C.M., Magirl, C.S., Baum, R.L., Coe, J.A., Schultz, W.H., and Bower, J.B., 2015, Landslide mobility and hazards: implications of the 2014 Oso disaster: Earth and Planetary Science Letters, v. 412, p. 197-208, doi:10.1016/j.epsl.2014.12.020.

Miller, D.J., and Sias, J., 1998, Deciphering large landslides: linking hydrological, groundwater and slope stability models through GIS: Hydrol. Process., v. 12, p. 923-941.

Additional Information

The Columbian -- President Obama Declares Disaster for Mudslide
USGS -- Feature Story
Seattle Times -- Landslide History near Oso
New York Times -- Extent of Mudslide (image)

Please contact Marijke van Heeswijk at with any additional questions.

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Page Last Modified: Thursday, 15-Dec-2016 13:26:09 EST