Overall Green 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: 1100978
Deaths: 0
Displaced: 3765
Region: Yixian
Countries: China
From - To 16 Jul - 19 Jul
Known identifiers for this event:


For more info on GDACS alert score click here.

Impact Assessement as of 19-07-2021

SENDAI Indicator B N Country Location Info
affected 16660 China Hulunbuir
displaced 3765 China Yixian
rescued 30 China Hinggan League
SENDAI Indicator C N Country Location Info
houses destroyed 10 China Yixian
SENDAI Indicator D N Country Location Info
bridges destroyed 12 China Yixian

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 16 Jul 2021 18 Jul 2021 FloodList
2 0 deaths and 3765 displaced 16 Jul 2021 19 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.