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Natural hazards Geographic Information Systems application
Maps and data › Natural hazards program › Geographic Information Systems application
This geographic information system tool can map earthquake, flood, and landslide hazards in the Portland, Ore. metropolitan region. Read the disclaimer and then follow the link to the hazard map tool.
Geographic Information Systems data
Geographic Information Systems (GIS) data are created and maintained at the Metro Data Resource Center, as well as by other jurisdictions and agencies in the region. Metro acts as a clearinghouse for spatial data - providing a "one stop shopping" approach to accessing regional data. These regional data are known as the Regional Land Information System (RLIS).
Using hazard maps
This Internet web site demonstrates how geographic information system technology can be used to illustrate the potential vulnerability, in a natural disaster, of people, the built environment and natural resources.
The map data available here combines Metro's Regional Land Information System (RLIS) data as well as other data layers specific to natural hazards. These data layers include earthquake hazard data. Hazard data and their analyses are no substitute for site-specific data collection and analysis. The hazard layers are published by the Oregon Department of Geology and Mineral Industries (DOGAMI).
The hazards data and RLIS Lite data represent "planning level" databases. While adequate for the majority of geographic information system applications, hazards data and RLIS Lite data have various degrees of accuracy and are not based on a tightly controlled geodetic network.
Care should be taken to avoid implying data accuracy by overlaying information of lower accuracy onto data of higher accuracy. For example, although the hazard layers can be mapped with the buildings, existence or non-existence of a hazard condition for a building cannot accurately be determined.
Hazard maps disclaimer
Users expressly agree that use of the data available on this web site is at the user's sole risk. Neither Metro, nor the Oregon Department of Geology and Mineral Industries, nor any of their respective employees, agents, or officers warrant that the information contained herein is error-free, nor do they make any warranty as to the results that may be obtained from use of information or as to the accuracy, reliability, or content of any information provided herein.
This web site is provided "as is" without warranties of any kind, either expressed or implied, including but not limited to warranties of merchantability or fitness for a particular purpose, other than those warranties which are implied by and incapable of exclusion, restriction of modification under the law.