Overall Red alert Flood
in China

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: 1100932
Deaths: 110
Displaced: 2518000
Region: Taiyuan
Countries: China
From - To 20 Jun - 30 Jul
Known identifiers for this event: FL-2021-000083-CHN

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 31-07-2021

SENDAI Indicator A N Country Location Info
death 12 China Zhengzhou
death 33 China Henan
death 63 China Henan
death 2 China Taiyuan
SENDAI Indicator B N Country Location Info
affected 42000 China Heilongjiang
affected 47000 China Hulunbuir
affected 1080000 China Jiangxi
affected 589400 China Sichuan
affected 2000000 China Xinxiang
displaced 1500000 China Zhejiang
displaced 360000 China Shanghai
displaced 19000 China Heilongjiang
displaced 376000 China Henan
displaced 100000 China Henan
displaced 63000 China Jiangxi
displaced 100000 China Sichuan
rescued 50 China Dalian
rescued 50 China Du an Yao Autonomous County
SENDAI Indicator C N Country Location Info
houses damaged 219 China Jiangxi
houses destroyed 156 China Jiangxi

Satellite Observation

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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 19000 displaced 20 Jun 2021 22 Jun 2021 FloodList
2 0 deaths 28 Jun 2021 30 Jun 2021 FloodList
3 0 deaths and 63000 displaced 28 Jun 2021 04 Jul 2021 FloodList
4 0 deaths and 100000 displaced 09 Jul 2021 15 Jul 2021 FloodList
5 108 deaths and 852000 displaced 17 Jul 2021 19 Jul 2021 FloodList
6 0 deaths and 1860000 displaced 26 Jul 2021 28 Jul 2021 FloodList
7 2 deaths 29 Jul 2021 30 Jul 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.