Overall Green alert Flood for Canada
in Canada

Flood impact summary

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

GDACS ID: 1100864
Deaths: 0
Displaced: 1700
Region: Jean Marie River, Fort Simpson, Hay River
Countries: Canada
From - To 07 May - 09 May
Known identifiers for this event:

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 11-05-2021

SENDAI Indicator B N Country Location Info
displaced 700 Canada Fort Simpson
displaced 1000 Canada Hay River
SENDAI Indicator C N Country Location Info
houses 22 Canada Jean Marie River

Satellite Observation

Satellite-based Flood extent provided by GLOFAS
Overall of the satellite-based flooded area from / to : 2021-04-30 / 2021-05-16  

Friday 30/04Saturday 01/05Sunday 02/05Monday 03/05Tuesday 04/05Wednesday 05/05Thursday 06/05Friday 07/05Saturday 08/05Sunday 09/05Monday 10/05Tuesday 11/05Wednesday 12/05Thursday 13/05Friday 14/05Saturday 15/05Sunday 16/05

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 1700 displaced 07 May 2021 09 May 2021 GLOFAS

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.