Overall Green alert Flood
in Colombia

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: 1101153
Deaths: 14
Displaced: 10
Region: Cauca
Countries: Colombia
From - To 23 Oct - 16 Nov
Known identifiers for this event:


For more info on GDACS alert score click here.

Impact Assessement as of 17-11-2021

SENDAI Indicator A N Country Location Info
death 11 Colombia Pie de Monte Costero
death 3 Colombia Pereira
SENDAI Indicator B N Country Location Info
affected 180 Colombia Puerto Guzmán
affected 60 Colombia Valle del Guamuez
affected 600 Colombia Retiro
affected 300 Colombia San Carlos
affected 1 Colombia Villavicencio
affected 10 Colombia Pie de Monte Costero
affected 6000 Colombia Buriticá
affected 100 Colombia Amagá
affected 86 Colombia Medellín
affected 5000 Colombia Cauca
affected 50 Colombia Pereira
displaced 10 Colombia Granada
SENDAI Indicator C N Country Location Info
houses 20 Colombia Amagá
houses 4 Colombia Pereira
houses damaged 136 Colombia Retiro
houses destroyed 2 Colombia Pie de Monte Costero
houses destroyed 3 Colombia San Carlos

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 25 Oct 2021 27 Oct 2021 FloodList
2 0 deaths 23 Oct 2021 25 Oct 2021 FloodList
3 0 deaths and 10 displaced 24 Oct 2021 26 Oct 2021 FloodList
4 11 deaths 02 Nov 2021 04 Nov 2021 FloodList
5 0 deaths 11 Nov 2021 15 Nov 2021 FloodList
6 3 deaths 11 Nov 2021 14 Nov 2021 FloodList
7 0 deaths 11 Nov 2021 16 Nov 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.