Overall Green alert Flood
in France

Flood impact summary

This flood is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

GDACS ID: 1101057
Deaths: 1
Displaced: 100
Region: Agen
Countries: France
From - To 24 Aug - 20 Sep
Known identifiers for this event:


For more info on GDACS alert score click here.

Impact Assessement as of 09-09-2021

SENDAI Indicator A N Country Location Info
death 1 France Vincendo
missing 1 France Aimargues
SENDAI Indicator B N Country Location Info
affected 130 France Agen
affected 1 France Vergèze
affected 450 France Gard
displaced 100 France Pignans
rescued 40 France Gard
rescued 20 France Agen
SENDAI Indicator C N Country Location Info
houses 1 France Caissargues
houses damaged - France Saint-Gondon
houses damaged - France Vincendo
SENDAI Indicator D N Country Location Info
roads - France Pignans
roads - France Vincendo
roads - France Bordeaux
roads - France Saint-Gondon

Satellite Observation


Timeline of revisions

For accessing reports of previous advisories, please click on the advisory number in the table below.

IDAlert ColorPopulation affectedStart DateEnd DateSource
1 0 deaths and 100 displaced 24 Aug 2021 26 Aug 2021 FloodList
2 1 deaths 27 Aug 2021 30 Aug 2021 FloodList
3 0 deaths 03 Sep 2021 05 Sep 2021 FloodList
4 0 deaths 08 Sep 2021 09 Sep 2021 FloodList
5 0 deaths 14 Sep 2021 15 Sep 2021 FloodList
6 0 deaths 19 Sep 2021 20 Sep 2021 FloodList

Flood polygons

This polygon (translucent blue with a blue border) is drawn by the analysts recording the flood event. It is meant to include all the areas reported as affected, by official source or the media. It does not represent the area actually under water.

Microwave flood detection

Flooded area, as detected in microwaves by the Global Flood Detection System of the JRC, based on NASA TRMM/GPM observations. This system has a rather low resolution (of 5-10km) but is not affected by clouds.
For more details, see http://www.unisdr.org/files/9622_LBNA23303ENC002.pdf.
The areas with a flood signal along the coast are an artefact of the system and should not be considered.

Optical Flood detection

Flooded area as detected in optical wavelengths by NASA/MODIS, known as "MODIS Flood Product". Data are made available by NASA GSFC Flood Mapping Project, http://oas.gsfc.nasa.gov/floodmap/index.html. Resolution of 250m, heavily affected by cloud cover.