Overall Green alert Flood for Indonesia
in Indonesia

Flood impact summary

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

GDACS ID: 1101149
Deaths: 12
Displaced: -
Region: Batu
Countries: Indonesia
From - To 28 Oct - 06 Nov
Known identifiers for this event:


For more info on GDACS alert score click here.

Impact Assessement as of 05-11-2021

SENDAI Indicator A N Country Location Info
death 6 Indonesia Kotawaringin Timur
death 6 Indonesia Batu
missing 3 Indonesia Batu
SENDAI Indicator C N Country Location Info
houses damaged 17 Indonesia Batu
houses destroyed 1 Indonesia Batu

Satellite Observation

Satellite-based Flood extent provided by GLOFAS
Overall of the satellite-based flooded area from / to : 2021-10-21 / 2021-11-13  

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 6 deaths 28 Oct 2021 30 Oct 2021 FloodList
2 6 deaths 04 Nov 2021 06 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.