Nigeria – Flooding Rivers Prompt State of Emergency in Niger, Kogi, Anambra and Delta

As many as 100 people have died in flooding in Nigeria over the past two weeks, according to disaster management authorities. Thousands are thought to have been displaced, particularly in communities along the country’s major rivers.

Over the past few weeks many areas have experience localized flash flooding due to storms bringing high intensity rainfall, including in Jigawa, Niger, Kano and Nasarawa states.

However, wide areas of the country now face flooding from the country’s major rivers after long-term rainfall in Nigeria and river catchments in neighbouring countries caused the Niger and Benue rivers to rise to danger levels.  Earlier this week Nigeria’s National Emergency Management Agency (NEMA) declared a state of emergency for flooding in the four states of Niger, Kogi, Anambra and Delta.

Other affected States have been placed under close watch, including the states of Kebbi, Kwara, Edo, Rivers, Bayelsa, Adamawa, Taraba, Benue and Nasarawa.

NEMA has set up 5 Emergency Operation Centres (EOC) to facilitate prompt search and rescue operations as well as humanitarian supports in the states worst affected by flooding. According to NEMA, the Emergency Response Centres will be responsible for planning, organizing, directing and supervising deployment of resources with the affected state governments and local authorities and communities. “The primary objective is to localize the responses and expedite intervention to save lives and facilitate quick recovery,” NEMA Director General Mustapha Maihaja said.

In late August Nigeria’s Hydrological Services Agency (NIHSA) warned communities in Kebbi, Niger, Kwara, Kogi, Anambra, Delta and Bayelsa states that increasingly high river levels could cause major flooding. Major dams had already begun releasing water as high flow from the upper catchment of the Niger basin moved downstream to Nigeria.

As of 30 August, the Niger river at Lokoja stood at 8.84 metres, above the 8 metre warning level and rising towards 10 metre red alert. Lokoja is the capital of Kogi State and lies at the confluence of the Niger and Benue rivers and downstream of the Kainji and Jebba dams.

As of 07 September the Niger river at Lokoja stood at 10.01 metres and by 18 September had reached 11.06 metres. NIHSA says that rivers are at similar levels to those seen in the lead up to the devastating floods of 2012. On 29 September 2012 the Niger river at Lokoja reached a record high of 12.84 metres.

The River Benue is also rising, though it is not yet at levels similar to those of 2012. NIHSA says that water releases from the Shiroro, Kainji and Jebba Dams is contributing to the rise in river levels. The Lagdo Dam in Cameroon however is not releasing water, according to NIHSA.

According to forecasts from NiMet, further heavy rain can be expected over the next 3 weeks, particularly in northern areas of the country.

NIHSA said that flash flooding is also likely to continue in some areas and communities should prepare.

“Localized urban flooding incidents being witnessed in some cities and communities in the country are expected to continue due to high rainfall intensity of shorter duration, rainstorms, blockage of drainage system and poor urban planning, as well as coastal flooding resulting from sea rise and storm surges. States and Local Governments should endeavour to remove structures built within the floodplains, clear blocked drainages, culverts and other waterways,” NIHSA added.

Flood Summary

Last updated: September 25, 2018
Event
Nigeria, August to September 2018
Date
August 27, 2018
Type
Flash flood, River flood
Cause
Extreme rainfall, Long-term rainfall
Heavy rain from around 27 August 2018 caused flooding in Niger, Kano and Nasarawa States, while on 30 August Nigeria's Hydrological Services Agency (NIHSA) warned communities in Kebbi, Niger, Kwara, Kogi, Anambra, Delta and Bayelsa states that increasingly high river levels could cause major flooding. The Shiroro, Kainji and Jebba dams were already releasing water and levels of the Niger river at Lokoja were equal or higher than those seen in 2012. Flooding affected parts of Jigawa State in early September. Further heavy rain from around 08 September caused flooding in Rikkos community of Jos North Local Government Area, Plateau State, where 200 households were displaced, according to News Agency of Nigeria (NAN). On 10 September around 1,000 homes were damaged after heavy rain caused flooding in Etsako Central Local Government Area of Edo State (NAN). On 17 September authorities in Nigeria, quoted by BBC and Reuters, said that over 100 people had died in floods across the country in the last 2 weeks. NIHSA warned of flooding from the Niger and Benue rivers and NEMA declared a state of emergency in Niger, Kogi, Anambra and Delta states. By 24 September NEMA confimred that 108 people had died and flooding had affected almost half a million people.

Locations

A - Mariga, Niger State
B - Mararaba, Nasarawa State
C - Kiru, Kano State
D - Ringim, Jigawa State
E - Rikkos
F - Etsako
G - Lokoja
H - Anambra
I - Benue
J - Delta
K - Kebbi
L - Kwara

Magnitude

River level
8.84 metres
Niger river at Lokoja - August 30 to August 30, 2018
Yellow warning level is 8 metres
River level
11.06 metres
Niger river at Lokoja - September 18 to September 18, 2018
Yellow warning level is 8 metres
Rainfall level
80 mm in 24 hours
Port Harcourt - September 13 to September 14, 2018
WMO figures
Rainfall level
99 mm in 24 hours
Abuja - September 7 to September 8, 2018
Ogimet figures
Rainfall level
92 mm in 24 hours
Lagos / Ikeja - September 6 to September 7, 2018
Rainfall level
61 mm in 24 hours
Lagos/Ikeja - September 23 to September 24, 2018
WMO figures
Rainfall level
11.05 mm in 24 hours
Niger river at Lokoja - September 24 to September 24, 2018

Damages

Fatalities
108 people
August 27 to September 25, 2018
Between 27 August and 06 September, 21 fatalities were reported in the states of Niger (15), Kano (3) and Nasarawa (3). In early September 7 people died in Jigawa State. On 24 September disaster authorities in the country said that 108 people had died since August.
Affected
500,000
August 27 to September 25, 2018
According to NEMA report of 24 September: Anambra (64,331 people affected), Benue (2,201), Delta (37,017), Edo (31,113), Kebbi (94,991), Kogi (118,199), Kwara (41,680) and Niger (51,719).
Evacuated
141,369
August 25 to September 26, 2018