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DOGAMI publications can be downloaded from https://www.oregon.gov/dogami/pages/default.aspx 2025 ArcGIS Metadata 1.0 Oregon Department of Geology and Mineral Industries 1 971 673 1555 1 971 673 1562 800 NE Oregon Street Suite 965 Portland Oregon 97232 US dogami-info@dogami.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 https://www.oregon.gov/dogami/pages/default.aspx "GDB" Esri File Geodatabase https://www.oregon.gov/dogami/pages/default.aspx File Geodatabase Raster Dataset Statewide_Landslide_Susceptibility_Overview 2025 Oregon Department of Geology and Mineral Industries Oregon Department of Geology and Mineral Industries Portland, Oregon, USA raster digital data Oregon Department of Geology and Mineral Industries Digital Data O-25-08 Statewide Landslide Information Database for Oregon Release-4.6 (SLIDO-4.6) Many parts of Oregon are highly susceptible to landslides which pose significant threats to people and infrastructure particularly in the portions of the state with moderate to steep slopes. As population growth expands and development onto landslide susceptible terrain occurs, greater losses are likely to result. Most of Oregons landslide damage has been associated with severe winter storms where landslide losses exceed $100 million in direct damage (such as the February 1996 eventsee FEMA, 1996). However, landslides are a chronic hazard in Oregon and annual average maintenance and repair costs for landslides in Oregon are over $10 million (Wang and others, 2002). Landslides induced by earthquake shaking are likely in many parts of Oregon, and losses associated with sliding in moderate-to-large earthquakes are likely to be significant. Volcanic induced and/or associated landslide hazards are also potential threats to parts of Oregon. In order to reduce risk from landslides, information about the hazard must be readily available. In 2007, research at the Oregon Department of Geology and Mineral Industries (DOGAMI) was performed to choose the best remote sensing dataset (i.e. aerial photos, photogrammetric elevation data, lidar elevation data, etc.) to use as a primary tool to begin systematic mapping of landslides in Oregon. The use of lidar topographic data was deemed necessary for the understanding and mapping the landslide hazard in Oregon. The second conclusion of this study was to systematically compile all previously mapped landslides from geologic and hazard maps. This database (Statewide Landslide Information Database of Oregon, SLIDO) would then serve as a starting place for all future landslide studies (Burns, 2007). The data in this raster depicts landslide susceptibility at a 10-meter resolution, across the state of Oregon. This dataset was created using elevation data, first from the Oregon Lidar Consortium (OLC), or from USGS NED 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 landslide inventory is intended to provide users with basic information regarding landslides. The geologic, terrain, and climatic conditions that led to landslides in the past may provide clues to the locations and conditions of future landslides, and it is intended that this data will provide useful information to develop regional landslide susceptibility maps, to guide site-specific investigations for future developments, and to assist in regional planning and mitigation of existing landslides. Partially funded by the Federal Emergency Management Agency (FEMA) Hazard Mitigation Grant Program (HMGP) Oregon Department of Geology and Mineral Industries 1 971 673 1555 1 971 673 1562 800 NE Oregon Street Suite 965 Portland Oregon 97232 US dogami-info@dogami.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 https://www.oregon.gov/dogami/pages/default.aspx William J. Burns Oregon Department of Geology and Mineral Industries United States North America Oregon Baker Benton Clackamas Clatsop Columbia Coos Crook Curry Deschutes Douglas Gilliam Grant Harney Hood Jackson Jefferson Josephine Klamath Lake Lane Lincoln Linn Malheur Marion Morrow Multnomah Polk Sherman Tillamook Umatilla Union Wallowa Wasco Washington Wheeler Yamhill Oregon Geospatial Enterprise Office Metadata Keyword Thesaurus soil surface alluvium sediment Oregon Geospatial Enterprise Office Metadata Keyword Thesaurus geoscientificinformation ISO 19115 Topic Category Landslide Susceptibility Natural hazards Oregon Geospatial Enterprise Office Metadata Keyword Thesaurus geoscientificinformation Landslide Susceptibility Natural hazards soil surface alluvium sediment United States North America Oregon Baker Benton Clackamas Clatsop Columbia Coos Crook Curry Deschutes Douglas Gilliam Grant Harney Hood Jackson Jefferson Josephine Klamath Lake Lane Lincoln Linn Malheur Marion Morrow Multnomah Polk Sherman Tillamook Umatilla Union Wallowa Wasco Washington Wheeler Yamhill 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. 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. Statewide Landslide Information Database for Oregon Release-4.6 (SLIDO-4.6) 2025 "4.6" Oregon Department of Geology and Mineral Industries Oregon Department of Geology and Mineral Industries Portland, Oregon, USA Oregon Department of Geology and Mineral Industries Digital Data O-25-08 https://www.oregon.gov/dogami/pages/default.aspx true -124.801838 -116.423586 46.203745 41.929528 Esri ArcGIS 13.6.0.59527 1 -124.801838 -116.423521 46.273992 41.929508 None None This map is based on three primary sources: a) landslide inventory, b) generalized geology, and c) slope. Factors that can affect the level of detail and accuracy of the final susceptibility map include: 1) lack of detailed landslide inventory statewide, 2) too much or too little generalization of the geology, and 3) highly variable DEM resolution resulting in variable accuracy of the slope model. Refer to DOGAMI Open File Report O-16-02 for more details on primary sources. QA/QC was conducted by comparing this data set to recent, detailed mapping, on the basis of visual comparison. This comparison appeard to reasonably capture the landslide inventory and the detailed moderate and shallow slides from previous localized studies. This data set was created and finalized for the entire state of Oregon. This data set was created using generalized statewide geology and landslide inventory, both developed from multiple sources and at variable scales, and statewide digital elevation model developed from various sources and resolutions. This map is not intended to be used at scales other than the published map data scale (1:500,000). See DOGAMI Open File Report O-16-02 for more details. Final map was created using a mosaic of Lidar-derived digital elevation models collected between 2000 and 2016 (down-sampled to 10-meter resolution) and the USGS National Elevation Dataset (10-meter resolution). See DOGAMI Open File Report O-16-02 for more details. Not applicable Oregon Department of Geology and Mineral Industries 1 971 673 1555 1 971 673 1562 800 NE Oregon Street Suite 965 Portland Oregon 97232 US dogami-info@dogami.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 https://www.oregon.gov/dogami/pages/default.aspx Burns et al, 2016 Landslide susceptibility overview map of Oregon Burns et al., 2016 2016 Oregon Department of Geology and Mineral Industries Oregon Department of Geology and Mineral Industries Portland, Oregon, USA Not Applicable Oregon Department of Geology and Mineral Industries Special Paper OFR O-16-02 https://pubs.oregon.gov/dogami/ofr/p-O-16-02.htm 2016 0 Statewide_Landslide_Susceptibility_Overview Table 4 OBJECTID OBJECTID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. VALUE Value Integer 4 0 0 Count Count Double 8 0 0 Description Description String 20 0 0 The data in this raster depicts landslide susceptibility at a 10-meter resolution, across the state of Oregon. This dataset was created using elevation data, first from the Oregon Lidar Consortium (OLC), or from USGS NED 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. dataset EPSG 6.18.3(9.3.1.2) Pixel 67394 93267 10.000000 10.000000 16 1 Upper Left FALSE LZ77 1 pixel codes FGDBR TRUE row and column 10.000000 10.000000