Active Archive of Large Floods, 1985-Present

Master Index of Inundation Maps

The Surface Water Record

River Watch

Other Flood Detection Tools

Sample Images and Maps






Global Active Archive of Large Flood Events

Citation for the data:

G.R.Brakenridge, "Global Active Archive of Large Flood Events", Dartmouth Flood Observatory, University of Colorado, http://floodobservatory.colorado.edu/Archives/index.html.

The information presented in this Archive is derived from news, governmental, instrumental, and remote sensing sources. The archive is "active" because current events are added immediately.

Each entry in the table and related "area affected" map outline represents a discrete flood event. However, repeat flooding in some regions is a complex phenomenon and may require a compromise between aggregating and dividing such events. The listing is comprehensive and global in scope. Deaths and damage estimates for tropical storms are totals from all causes, but tropical storms without significant river flooding are not included.

The Archive includes: 1) an online .html table of recent events, only; 2) Excel .xls and .xml files for all events, 1985-present, updated as the recent events html is updated; 3) a GIS (MapInfo format) file set (1 2 3 4 5) and 4) a .shp format file set (1,2,3,4), each providing flood catalog numbers, centroids, area affected outlines, and other attribute information and updated as the recent events html is updated. The .shp files are generated from the MapInfo files).

Many floods have now been imaged by satellite and translated at the Dartmouth Flood Observatory into individual maps of inundation extents. To view these maps, follow any hyperlinks in the Archive .html, .xls, or .xml files in the "Country" column for a specific event.. Many other floods have been imaged and mapped but are instead shown as current or past flooding areas in the Global Surface Water Record.

See Also: Master Index of Rapid Response Inundation Maps

You can visualize an Interactive Map of the Global Flood Events 1985 -2002. (If the map does not appear, you might download the Flash player (for free) on the Macromedia web site).

For additional information concerning how these maps and tables are created, please review the Archive Notes.

Below: Geographic Centers of floods in the FloodArchive GIS file, 1985-2010






This work is made possible by data acquired by NASA, the Japanese Space Agency, and the European Space Agency, and funding support from NASA and the European Commission, through the Global Disaster Alert and Coordination System (GDACS) project, Joint Research Centre, Ispra, Italy. The Observatory was founded in 1993 at Dartmouth College, Hanover, NH USA and moved to the University of Colorado, INSTAAR, CSDMS in 2010. The institutional support of both universities is gratefully acknowledged.

http://floodobservatory.colorado.edu/Flood Observatory