Overall Red alert Flood for Nigeria
in Nigeria

Flood impact summary

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

GDACS ID: 1101659
Deaths: 605
Displaced: 1306000
Region: Bayelsa State, Delta State, Anambra State, Abuja, Cross River State, Rivers State, Bayelsa State
Countries: Nigeria
From - To 10 Sep - 26 Oct
Known identifiers for this event: FL-2022-000350-NGA

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 21-10-2022

SENDAI Indicator A N Country Location Info
death 2 Nigeria Lagos
death 603 Nigeria -
SENDAI Indicator B N Country Location Info
affected 35200 Nigeria Uzo-Uwani
affected 2504000 Nigeria Bayelsa State, Delta State, Anambra State, Abuja, Cross River State, Rivers State
affected 1 Nigeria Mariga
displaced 3000 Nigeria Lokoja
displaced 1303000 Nigeria Cross River State, Delta State, Rivers State, Bayelsa State, Abuja, Anambra State
injured 2400 Nigeria Delta State, Abuja, Anambra State, Cross River State, Rivers State, Bayelsa State
rescued 9 Nigeria Maryland
SENDAI Indicator C N Country Location Info
agriculture 53800 Nigeria Uzo-Uwani
houses 1 Nigeria Maryland
houses damaged 500 Nigeria Lokoja
houses damaged - Nigeria Uzo-Uwani
SENDAI Indicator D N Country Location Info
bridges damaged - Nigeria Uzo-Uwani
roads - Nigeria Uzo-Uwani

Satellite Observation

Satellite-based Flood extent provided by GLOFAS
Overall of the satellite-based flooded area from / to : 2022-09-03 / 2022-11-02  

Saturday 03/09Sunday 04/09Monday 05/09Tuesday 06/09Wednesday 07/09Thursday 08/09Friday 09/09Saturday 10/09Sunday 11/09Monday 12/09Tuesday 13/09Wednesday 14/09Thursday 15/09Friday 16/09Saturday 17/09Sunday 18/09Monday 19/09Tuesday 20/09Wednesday 21/09Thursday 22/09Friday 23/09Saturday 24/09Sunday 25/09Monday 26/09Tuesday 27/09Wednesday 28/09Thursday 29/09Friday 30/09Saturday 01/10Sunday 02/10Monday 03/10Tuesday 04/10Wednesday 05/10Thursday 06/10Friday 07/10Saturday 08/10Sunday 09/10Monday 10/10Tuesday 11/10Wednesday 12/10Thursday 13/10Friday 14/10Saturday 15/10Sunday 16/10Monday 17/10Tuesday 18/10Wednesday 19/10Thursday 20/10Friday 21/10Saturday 22/10Sunday 23/10Monday 24/10Tuesday 25/10Wednesday 26/10Thursday 27/10Friday 28/10Saturday 29/10Sunday 30/10Monday 31/10Tuesday 01/11Wednesday 02/11

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 2 deaths 10 Sep 2022 12 Sep 2022 GLOFAS
2 0 deaths 15 Sep 2022 17 Sep 2022 GLOFAS
3 0 deaths and 3000 displaced 23 Sep 2022 25 Sep 2022 GLOFAS
4 0 deaths 01 Oct 2022 03 Oct 2022 GLOFAS
5 603 deaths and 1303000 displaced 01 Oct 2022 26 Oct 2022 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.