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The Cascadia Lifeline Program (CLiP) and the Geomatics Research Group
in School of Civil and Construction Engineering at the
Oregon State University works to ensure that the information provided on this website is accurate, timely, and useful.
The information provided herein is for reference only and is not suitable for incorporation in engineering design or site-specific analysis; instead, it provides a starting point to identify and understand hazards of primary concern.
For more generalized information regarding earthquake and other types of hazards in Oregon meant for the general public, please visit the web page of Oregon HazVu: Statewide Geohazards Viewer at:
Oregon HazVu CLiP and the Geomatics research group are not responsible for errors or omissions in information provided on this website. Any use of this website or the information available at this website is at your own risk and we will not be responsible for the consequences of your decision to utilize the information.
Visitors are encouraged to confirm the information contained on this website with other reliable sources and agencies. Use and access to this website or any of the links contained within this website do not create an engineering consultant-client relationship. The linked websites are not under Geomatics research group’s control and the research group does not assume any responsibility or liability for any communication or materials available at such linked websites.
Corrections, additions, and updates to this website will be made when necessary or as time permits.
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Your valuable insights will help us better understand how and where O-HELP is being used, and identify areas where we can improve the tool.
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Probability of earthquake-induced landslide under dry soil conditions. In percent.
Landslide PGD
Permanent ground deformation due to earthquake-induced landslide under dry soil conditions, in centimeters.
Magnitude 6.8 Landslide Wet
Landslide Triggering Probability
Probability of earthquake-induced landslide under wet (or saturated) soil conditions. In percent.
Landslide PGD
Permanent ground deformation due to earthquake-induced landslide under wet (or saturated) soil conditions, in centimeters.
Magnitude 6.8 Liquefaction Wet
Liquefaction Triggering Probability
Probability of liquefaction under wet (or saturated) soil conditions. In percent.
Liquefaction PGD
Permanent ground deformation due to liquefaction lateral spreading. Liquefaction assumes wet (or saturated) soil conditions, in centimeters.
Magnitude 6.8 Site Ground Motion
Short Period Spectral Acceleration
Site spectral acceleration at 0.3 sec, in g (standard gravity).
One Second Spectral Acceleration
Site spectral acceleration at 1.0 sec, in g (standard gravity).
Peak Ground Acceleration
Site peak ground acceleration, in g (standard gravity).
Peak Ground Velocity
Site peak ground velocity, in centimeters per second.
Magnitude 9.0 Landslide Dry
Landslide Triggering Probability
Probability of earthquake-induced landslide under dry soil conditions. In percent.
Landslide PGD
Permanent ground deformation due to earthquake-induced landslide under dry soil conditions, in centimeters.
Magnitude 9.0 Landslide Wet
Landslide Triggering Probability
Probability of earthquake-induced landslide under wet (or saturated) soil conditions. In percent.
Landslide PGD
Permanent ground deformation due to earthquake-induced landslide under wet (or saturated) soil conditions, in centimeters.
Magnitude 9.0 Liquefaction Wet
Liquefaction Triggering Probability
Probability of liquefaction under wet (or saturated) soil conditions. In percent.
Liquefaction PGD
Permanent ground deformation due to liquefaction lateral spreading. Liquefaction assumes wet (or saturated) soil conditions, in centimeters.
Magnitude 9.0 Site Ground Motion
Short Period Spectral Acceleration
Site spectral acceleration at 0.3 sec, in g (standard gravity).
One Second Spectral Acceleration
Site spectral acceleration at 1.0 sec, in g (standard gravity).
Peak Ground Acceleration
Site peak ground acceleration, in g (standard gravity).
Peak Ground Velocity
Site peak ground velocity, in centimeters per second.
Topography
Elevation Model (30m)
This is a hybrid elevation model which is compiled from 10 meter and 30 meter DEMs. Lidar data from the Oregon Lidar Consortium was downsampled. Data from the USGS National Elevation Dataset were used in the remaining gaps where lidar data were not available.
This is a complete, digitally compiled, general geology file with a vector polygon format from the Oregon Geologic Data Compilation by DOGAMI.
Quaternary Fault
This is a compilation of quaternary faults within the last 1,600,000 years. The source of this file is from USGS (USGS, 2006) website in a vector polyline structure.
NEHRP
National earthquake hazard reduction program which depicts the site class based on the site soil properties and shear wave velocity in accordance with geotechnical data.
SLIDO v4 Landslide Polygons
This is a complete, digitally compiled, general geology file with a vector polygon format from the Oregon Geologic Data Compilation by DOGAMI.
SLIDO v4 Landslide Points
This is a compilation of quaternary faults within the last 1,600,000 years. The source of this file is from USGS (USGS, 2006) website in a vector polyline structure.
Landslide Susceptibility Overview Map
The data in this raster depicts landslide susceptibility at a 10-meter resolution, across the state of Oregon. The data was created using Oregon Lidar Consortium (OLC) data,
and USGS NED data where OLC data was not present. This elevation data was converted into slopes, and a multi-pronged analysis process used these slopes, geology and mapped existing landslides
to create this 10-meter raster. There are 4 classes of landslide susceptibility: Low, Moderate, High and Very High. The data is provided by the Oregon Department of Geology and Mineral Industries
Transportation
Base Condition
This accessibility map presents the travel time from each zone to Portland International Airport when the network is intact. The afternoon peak traffic condition (4pm-5pm) is adopted for simulation in VISUM.
Bridge Failure Condition
This accessibility map presents the travel time from each zone to Portland International Airport when the network is disrupted, specifically, the eight bridges over the Willamette Rive near Portland downtown are set to be failed. The afternoon peak traffic condition (4pm-5pm) is adopted for simulation in VISUM.
Bridges
This is a complete database of all bridges in the state of Oregon provided by the Oregon Geospatial Data Enterprise Spatial Data library.
Highway
This is a compilation of all ODOT highway networks.
This feature class contains actual and "pseudo" drillholes used to create 3D geologic and geophysical models for the 2013 Portland NEHRP project. Drillhole points were digitized from maps or coordinates in drilling reports for geotechnical or other purposes (e.g. water wells, hydrocarbon exploration, etc). The drillhole feature class participates in two one-to-many relationship classes with tables of downhole geologic interpretations (PDX_NEHRP_interpretations) and shear-wave velocity measurements (PDX_NEHRP_Vs) using the key field "LOG_ID_concatenated". It is provided by department of Oregon geology and mineral industry (DOGAMI).
CPT
SPT
Shearwave Tests
3D Portland
Buildings
This is a 3D mesh model of the buildings in Portland.
Rails
This is a 3D line model of the rails in Portland.
Ground Motion
Modified Mercalli
Using developed regression relationships between peak ground acceleration and Modified Mercalli intensity from Wald et al (1999), this continuous raster map is generated to give the users information about how strong the earthquake will be felt.
Peak Ground Acceleration
This map uses bedrock PGA values from the model developed by USGS for a specific secnario of Cascadia subduction earthquake ground shaking in the Pacific Northwest (http://earthquake.usgs.gov/eqcenter/shakemap/global/shake/Casc9.0_expanded_se/) combined with a new map of NEHRP site class for Oregon (Madin and Burns 2013) and uses the soil factor relationships of Boore and Atkinson (2008) to calculate site-dependent PGA. The methods and data used to make this map are described in detail in : Madin, I.P., and Burns, W.J., 2013. Published in a open file report (OSSPAC,2013) by Oregon Department of Geology and Mineral Industries (DOGAMI).
Peak Ground Velocity
This map uses bedrock one-second spectral amplification (SA01) values from the model developed by USGS for a specific secnario of Cascadia subduction earthquake ground shaking in the Pacific Northwest (http://earthquake.usgs.gov/eqcenter/shakemap/global/shake/Casc9.0_expanded_se/) combined with a new map of NEHRP site class for Oregon (Madin and Burns 2013) and uses the soil factor relationships of Boore and Atkinson (2008) to calculate site-dependent SA01. The SA01 values are then converted into PGV values. The methods and data used to make this map are described in detail in : Madin, I.P., and Burns, W.J., 2013. Published in a open file report (OSSPAC,2013) by Oregon Department of Geology and Mineral Industries (DOGAMI).
Short Period Spectral Response
This map uses bedrock 0.3 second spectral amplification (SA0p3) values from the model developed by USGS for a specific secnario of Cascadia subduction earthquake ground shaking in the Pacific Northwest (http://earthquake.usgs.gov/eqcenter/shakemap/global/shake/Casc9.0_expanded_se/) combined with a new map of NEHRP site class for Oregon (Madin and Burns 2013) and uses the soil factor relationships of Boore and Atkinson (2008) to calculate site-dependent SA0p3. The SA0p3 values are then converted into PGV values. The methods and data used to make this map are described in detail in : Madin, I.P., and Burns, W.J., 2013. Published in a open file report (OSSPAC,2013) by Oregon Department of Geology and Mineral Industries (DOGAMI).
One Second Spectral Response
This map uses bedrock one-second spectral acceleration (SA01) values from the model developed by USGS for a specific secnario of Cascadia subduction earthquake ground shaking in the Pacific Northwest (http://earthquake.usgs.gov/eqcenter/shakemap/global/shake/Casc9.0_expanded_se/) combined with a new map of NEHRP site class for Oregon (Madin and Burns 2013) and uses the soil factor relationships of Boore and Atkinson (2008) to calculate site-dependent SA01., The methods and data used to make this map are described in detail in : Madin, I.P., and Burns, W.J., 2013. Published in a open file report (OSSPAC,2013) by Oregon Department of Geology and Mineral Industries (DOGAMI).
Landslide
Landslide Triggering Probability
This map uses the methods of section 4.2.2.2 of the HAZUS-MH MR4 (FEMA, 2011 in references) to create a new coseismic landslide probability map for Oregon. The map uses a new landslide susceptibility map and a new map of site peak ground acceleration from Madin and Burns (2013, in references) as input to the model. The methods and data used to make this map are described in detail in : Madin, I.P., and Burns, W.J., 2013. Please note that all the probabilities in this dataset is scaled to 30 percentage. Published in a open file report (OSSPAC,2013) by Oregon Department of Geology and Mineral Industries (DOGAMI).
Landslide Displacement
This map uses the methods of section 4.2.2.2 of the HAZUS-MH MR4 (FEMA, 2011 in references) to create a new coseismic landslide permanent ground deformation (PGD) map for Oregon. The map uses a new landslide susceptibility map and a new map of site peak ground acceleration from Madin and Burns (2013, in references) as input to the model. The methods and data used to make this map are described in detail in : Madin, I.P., and Burns, W.J., 2013. Published in a open file report (OSSPAC,2013) by Oregon Department of Geology and Mineral Industries (DOGAMI).
Liquefaction
Liquefaction Triggering Probability
This map uses the methods of section 4.2.2.1 of the HAZUS-MH MR4 (FEMA, 2011 in references) to create a new coseismic liquefaction probability map for Oregon. The map uses a new liquefaction susceptibility map and a new map of site peak ground acceleration from Madin and Burns (2013, in references) as input to the model. The methods and data used to make this map are described in detail in : Madin, I.P., and Burns, W.J., 2013. Please note that all the probabilities in this dataset are scaled to 30 percentage. Published in a open file report (OSSPAC,2013) by Oregon Department of Geology and Mineral Industries (DOGAMI).
Lateral Spreading
This map uses the methods of section 4.2.2.1 of the HAZUS-MH MR4 (FEMA, 2011 in references) to create a new coseismic liquefaction lateral spread permanent ground deformation (PGD) map for Oregon. The map uses a new liquefaction susceptibility map and a new map of site peak ground acceleration from Madin and Burns (2013, in references) as input to the model. The methods and data used to make this map are described in detail in: Madin, I.P., and Burns, W.J., 2013. Published in a open file report (OSSPAC,2013) by Oregon Department of Geology and Mineral Industries (DOGAMI).
Bridge Damage Assessment
Using HAZUS-MH Fragility Function
Bridge damage map for the selected Cascadia subduction zone earthquake scenario using HAZUS-MH fragility functions.
Using EQ+LS+LQ Fragility Function
Bridge damage map for the selected Cascadia subduction zone earthquake scenario using earthquake ground shaking + landslide + liquefaction fragility functions.
Fault Rupture
Extent
This is the extent of fault rupture corresponding to selected Cascadia earthquake scenario.
Subsidence
Coastal Coseismic Subsidence
This is a parameter which depicts the land level change in a Cascadia subduction earthquake event.
Tsunami
Anticipated Inundation Area
This dataset is shapefile representing the areas which will be inundated in a Large (L1) tsunami scenario for Oregon coast. Please see the relevant text report for more details.
Ground Motion
2% in 50 Years PGA
Probabilistic PGA from USGS.
10% in 50 Years PGA
Probabilistic PGA from USGS.
Landslide Hazard Map
2%in50 Landslide Disp.
Landslide displacement value corresponding to a 2% in 50 years event.
10%in50 Landslide Disp.
Landslide displacement value corresponding to a 10% in 50 years event.
Landslide Susceptibility Map
1_ek00_m025_cr0
Susceptibility map for the Gales Creek watershed showing a probability of failure corresponding to a kh=0, m=0.25 and cr=0 scenario.
2_ek00_m025_cr8
Susceptibility map for the Gales Creek watershed showing a probability of failure corresponding to a kh=0, m=0.25 and cr=8.
3_ek01_m025_cr8
Susceptibility map for the Gales Creek watershed showing a probability of failure corresponding to a kh=0.1, m=0.25 and cr=8.
4_ek03_m025_cr8
Susceptibility map for the Gales Creek watershed showing a probability of failure corresponding to a kh=0.3, m=0.25 and cr=8.
O-HELP 3D Oregon Hazard Explorer for Lifelines Program Cascadia Lifeline Programs (CLiP)
