Dartmouth Flood Observatory

Overview

The Flood Observatory’s mission is to:

  1. Conduct global remote sensing-based fresh water measurement and mapping in "near real time" and record such information into a permanent archive.
  2. Collaborate with humanitarian and water organizations in partnerships for enabling the maximum utility of such information.
  3. Perform hydrological research in the area of surface water variability, using both remote sensing and modeling, and continue to develop new methods of measuring Earth's water cycle. 

In developing flood maps, currently all sensors available and useful are used. Mainly NASA MODIS, but also Landsat, ESA's Sentinel 1a and 1b, and soon Sentinel 2. Radarsat, Cosmo SkyMed, EO-1 etc, information have also been provided for each event separately. 

Learn more: http://floodobservatory.colorado.edu/index.html

Latest Updates

April 13, 2017
SAR flood maps of 2017 New Zealand floods.
Below are images of a SAR Flood Map derived from ESA Sentinel-1 data for April 4, 2017. Flood regions were detected by measuring the difference in radar images acquired on April 4 and March 11 by Sentinel-1. Newer products will be developed when the data becomes available from ESA. On the KML file, red areas indicate flood presence. The point of contact for this data is: robert.brakenridge@colorado.edu Layers, top to bottom: Light Blue is reference water extent mapped via NASA 90 m (spatial resolution) SWBD. Red is flood water...
April 11, 2017
Flood extent map from the 2017 floods in Argentina.
This is a draft map using two (Terra and Aqua) NASA MODIS WorldView scenes from April 11, 2017. Water was classified using an "isodata" unsupervised classification method (7-17 classes, three iterations, three classes were combined into one "water" class). A before scene is shown above for comparison purposes, but no change detection approach has been used so far. There are abundant "false water" areas shown; this map will be revised to remove these errors. Data processing of Sentinel 1 SAR scenes is in progress. Many rivers in this dry region of the Pampas are ephemeral and ofter without...
January 20, 2016
To create this display, satellite data are obtained by the Flood Observatory, processed to detect water/land boundaries, and analyzed to produce current surface water extent in vector GIS format.
To create this display, satellite data are obtained by the Flood Observatory, processed to detect water/land boundaries, and analyzed to produce current surface water extent in vector GIS format.  The Observatory also accepts GIS flood inundation limits from other sources and incorporates this information with permission of the authors. The date of last update is shown on each map. A large scale Geotif version is also available. Color coding for previous flooding:...