Oregon Department of Geology and Mineral Industries 2018 raster digital data Oregon Department of Geology and Mineral Industries Open-File Report Open-File Report O-18-02 Portland, Oregon, USA Oregon Department of Geology and Mineral Industries http://www.oregongeology.org Oregon Department of Geology and Mineral Industries 2018 file geodatabase Oregon Department of Geology and Mineral Industries Open-File Report Open-File Report O-18-02 Portland, Oregon, USA Oregon Department of Geology and Mineral Industries http://www.oregongeology.org/ Probability of Permanent ground deformation (ground failure) estimates due to earthquake-induced landslides are based on the methods outlined in the Hazus Earthquake Technical Manual (FEMA, 2011) For use in assessing potential damage to buildings and infrastructure resulting from an earthquake. Probability of Permanent Ground Deformation data is accompanied with a Permanent Ground Deformation value. See accompanying geodatabase and the CSZ_M9p0_PGD_landslide_dry raster dataset. Landslides can occur without seismic activity. This data should not be used as an indication of landslide susceptibility. 2018 Complete None planned -123.505024 -121.646559 45.809726 44.853442 ISO 19115 Topic Category geoscientificinformation Oregon Geospatial Enterprise Office Metadata Keyword Thesaurus landslide landslide risk lateral spread earthquake hazard earthquake risk Oregon Geospatial Enterprise Office Metadata Keyword Thesaurus Clackamas Multnomah Washington Oregon Geospatial Enterprise Office Metadata Keyword Thesaurus Land surface subsurface subsoil Oregon Geospatial Enterprise Office Metadata Keyword Thesaurus None REPORT DATA: This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. Users of this information should review or consult the primary data and information sources to ascertain the usability of the information. This publication cannot substitute for site-specific investigations by qualified practitioners. Site-specific data may give results that differ from the results shown in the publication. See the accompanying text report for more details on the limitations of the methods and data used to prepare this publication. Oregon Department of Geology and Mineral Industries mailing and physical address

800 NE Oregon Street Suite 965

Portland Oregon 97232 USA 1 971 673 1555 1 971 673 1562 dogami-info@oregon.gov When contacting DOGAMI about this data set, please reference the data set title or other identifying information in your correspondence. DOGAMI publications can be downloaded from http://www.oregongeology.org John Bauer Oregon Department of Geology and Mineral Industries Geohazards Analyst jpeg image (.jpg) This work was funded on behalf of Regional Disaster Preparedness Organization with an Urban Area Security Initiative grant for the Portland Metropolitan Region. Unclassified Probability of Permanent ground deformation is an estimate of the probability of ground failure that could occur at a site, given generalized geologic conditions and assumptions on site ground motion. In practice, local site variations may differ significantly from our generalized assumptions, such as anthropogenic modifications to surface water drainage. Known boundary conditions occur in the local geology datasets, typically on 7.5-minute quadrangle boundaries, due to the heterogeneity of the geologic source data available for the study area. The three-county area is covered in its entirety. not applicable Oregon Department of Geology and Mineral Industries In preparation vector digital data Oregon Department of Geology and Mineral Industries Open-File Report In preparation Portland, Oregon Oregon Department of Geology and Mineral Industries 1:4000 - 1:100000 For dry soil conditions, we were not able to use the tool developed by Sharifi-Mood and others (in preparation). As part of a statewide multi-hazard risk assessment effort for Oregon, we developed a lookup table method for rapid loss estimation from a Cascadia Subduction Zone M 9.0 earthquake, and from a Portland Hills Fault M 6.8 earthquake (Bauer, 2016). All combinations of discretized bedrock ground motion, and all combinations of NEHRP site classification, liquefaction susceptibility, and landslide susceptibility, were run through the Hazus model. Building loss ratios, along with ground failure probabilities and lateral spread amount, were captured in a lookup table. Of the four site ground motion parameters, the Hazus ground failure model uses only the site peak ground acceleration. Landslide susceptibility, dry scenario, developed as part of this project but published under separate cover (Appleby and others, 2018), was available as a 10-foot raster. The NEHRP site classification, available from the same study, was converted to a 10-foot integer raster, using a 1 through 4 scale (B=1, C=2, D=3, E and F = 4). Liquefaction susceptibility, available in polygon form from the same study, was converted to a 10-foot raster grid using the liquefaction susceptibility rating. Lastly, the bedrock pga raster data for a Portland Hills Fault M6.8 earthquake, (data accompanied this report) was multiplied by 100 and converted to an integer raster. A Hazus-based ground failure raster layer was created by combining the four layers (bedrock pga, NEHRP, and liquefaction and landslide susceptibility) into an integer key, which was then used to access the lookup table. Landslide susceptibility values were multiplied by 1, Liquefaction susceptibility values were multiplied by 100. NEHRP classification, converted to a 1 to 4 scale (B=1, E=4), were multiplied by 1,000. Lastly, the discretized bedrock peak ground acceleration, at 0.02 g increments, was multiplied by 10,000. The four raster layers were then added together. The integer key was then used to access the lookup table to obtain a Hazus-derived permanent ground deformation (PGD) value and a probability of occurrence value. For example, a key of 162010 refers to a record with pga = 16% g, NEHRP site classification of C, liquefaction susceptibility of zero, and a landslide susceptibility of 10. The raster layer attribute table was joined to the lookup table. Individual values of PGD and probability were exported to a new raster using the Lookup function in Esri Spatial Analyst. For the dry soil conditions scenario, only the landslide PGD and Probability were exported to individual rasters, one of which is supplied here. Oregon Department of Geology and Mineral Industries mailing and physical address

800 NE Oregon Street Suite 965

Portland Oregon 97232 USA 1 971 673 1555 1 971 673 1562 dogami-info@oregon.gov When contacting DOGAMI about this data set, please reference the data set title or other identifying information in your correspondence. DOGAMI publications can be downloaded from http://www.oregongeology.org Raster Grid Cell NAD 1983 HARN Oregon Statewide Lambert Feet Intl 43.0 45.5 -120.5 41.75 1312335.958005249 0.0 coordinate pair 0.0000000266012656346959 0.0000000266012656346959 foot D North American 1983 HARN GRS 1980 6378137.0 298.257222101 FEMA, 2011 Earthquake-induced landslide model Federal Emergency Management Agency, 2011, Hazus-MH 2.1 Technical manual, Earthquake model: Washington, D.C., 718 p. VALUE Probability of ground deformation due to earthquake-induced landslide, in percent FEMA, 2011 Oregon Department of Geology and Mineral Industries mailing and physical address

800 NE Oregon Street Suite 965

Portland Oregon 97232 USA 1 971 673 1555 1 971 673 1562 dogami-info@oregon.gov When contacting DOGAMI about this data set, please reference the data set title or other identifying information in your correspondence. DOGAMI publications can be downloaded from http://www.oregongeology.org Although these data have been processed successfully on a computer system at the Oregon Department of Geology and Mineral Industries, no warranty expressed or implied is made by DOGAMI regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. Oregon Department of Geology and Mineral Industries mailing and physical address

800 NE Oregon Street Suite 965

Portland Oregon 97232 USA 1 971 673 1555 1 971 673 1562 dogami-info@oregon.gov When contacting DOGAMI about this data set, please reference the data set title or other identifying information in your correspondence. DOGAMI publications can be downloaded from http://www.oregongeology.org Oregon Department of Geology and Mineral Industries Metadata Standard 1.4 None None None None None