By Femi D. Ogunnigbo and Taiwo Ogunwumi
As of October 24, 2022, the situation report reveals that 612 people have been killed, and 2,776 persons injured by this year’s flood, Nigeria Minister of Humanitarian Affairs, Disaster Management and Social Development, Sadiyya Farouq, stated.
Finding
a solution to flooding remains understanding the root causes first which can
either be natural or human factors or both, Dr. Josiah Omirin, a lecturer at
the Urban and Regional Planning Department at the University of Ibadan stated
in a phone interview in gathering information for this report.
Natural factors can be classified into two. First, primary factors include excessive rainfall resulting in pluvial flooding (caused by climate change); and sea level rise which causes coastal flooding. Second is the secondary factor such as dams breaking, blockage of culverts; and narrow drainage channels.
On the other hand, human root causes highly influenced flooding
disasters. They include urbanization (with respect to limited space, pushing
people to build in unsafe places); poor implementation of planning laws and
regulations caused largely by corruption; increased impervious surfaces; land
reclamation; and poor waste management practices.
Indeed, the degree of exposure to flooding is location specific.
Low elevation also known as low-lying or depressed areas are highly vulnerable
to flooding than high elevation. Water flows down from a higher elevation to a
lower elevation. As excess water is discharged from Lagdo Dam in Cameroon
passing through the River Benue down to the Niger Delta region caused this
year’s flooding, reports have shown.
The Terrain Modeling conducted for this report by Olagoke Owodumi,
a Geographic Information System (GIS) researcher reveals that the
most affected states in this year’s flooding (Anambra, Bayelsa, Cross
River, Delta, Rivers, and, the Federal Capital Territory) are all within the
lowland areas.
Terrain
Modeling of Nigeria / Olagoke Owodumi / Oct. 29, 2022
Studies have shown that flooding can be addressed by two approaches, structural
and nonstructural. The structural approach includes flood and erosion control
mechanisms such as dams, drainage systems, sea defense, dykes, flood retention
ponds, and vegetation. While the nonstructural approaches are early warning
services, flood risk assessments, emergency institutions services, advocacy,
policies and environmental regulations, social safety net, insurance (for flood
protection and risk reduction), and ecological funds.
Analysts
have argued that flood disaster management is the responsibility of the
government who protect the lives and properties of citizens. “Much more is
required from government institutions that are saddled with the task of
prevention, mitigation, and preparedness to reduce and address post-flooding
issues like relief and recovery,” said by Dr. Chukwudi Njoku, a flood expert,
who was present on the Twitter Space (joined by182 participants) held
prior to the compiling of this report.
In 2011, it was reported that governments ignored early
warning messages from Nigeria’s Emergency Management Agency (NEMA). More than
25 people lost their lives in Ibadan. In 2012, 363 were
reported killed by the flood. This June, Nigerian Metrological Agency
(NIMET) warned that 33 states are at risk of flooding. Yet, no active
measures were put in place for preparedness. Preparedness reduces risk and
cost. More than 600 people died.
Government should provide advanced training support for staff in
emergency institutions. They should be equipped with the necessary emergency
preparedness and quick response apparatus. This solution goes beyond the
generic Annual Flood Outlook report that’s normally shared and communicated via
NEMA/NIHSA website. For highly detailed flood risk mapping and for data
sharing, the government should partner with nongovernmental organizations
and other flood mapping initiatives using the OpenStreetMap platform (a
geographic database of the world) to map towns and communities.
Flood
and disaster risk experts are also needed at this time. Njoku believed that
development practitioners and researchers have a role in identifying gaps and
providing solutions.
The
question is, how can different levels of government (local, state, and federal)
make decisions about flood risk reduction measures? Mr. Olumide Idowu argued
that local government should be held accountable for local initiatives. He
believed that citizen participation is vital. He further that people should
start questioning their local authorities. “If we don’t start with these people
that we see and people that are closer to us, then how do we get to the level
of a minister at federal or state that is far from us?”
Another question is, how can the local, state, and federal
interact in solving flood disasters? And how can two ministries avoid
duplication of services? For instance, there is
a disagreement between the Federal Ministry of Environment and the
Federal Ministry of Water Resources regarding whose responsibility it is to
address flood issues. Government should resolve rivalries between one ministry
and the others, and strengthen cooperation between the three tiers of
government.
Media and investigative journalists should write reports on the
use of ecological funds. They should also verify the project outcome as this
will let the concerns (including the legislative) have access to the right
information to hold whoever is responsible accountable. However, investigative
journalism demands resources. Mr. Akíntúndé Babátúndé, the Deputy Director at
the Centre for Journalism Innovation and Development emphasized that investigative
journalism required time (2-4 weeks minimum) and is expensive ($1000-$1500) as
media houses have limited resources in developing such reports.
Recently, the United States through U.S. Agency for International
Development (USAID) provides $1 million in humanitarian aid for
flood victims in Nigeria. Funding organizations should also support media
and newspaper outlets (including research institutions) with financial aid for
solution-driven reporting in the country.
Dr.
Tolu Osayomi, a medical geographer and spatial epidemiologist at the University
of Ibadan maintained that government alone could not solve this problem as
individuals and communities should mitigate flood disasters by adhering to
environmental regulations and stopping illegal building practices. Meanwhile,
it is unlawful to build houses encroaching into setbacks of rivers/streams and
drainages. With effective regulations, people living in flood-prone zones would
find it hard to go back to the same places as soon as the flood subsides.
Njoku furthered that individuals can drive effective flood
measures by adopting digital advocacy and submitting their petitions
on change.org. “Putting the issue in the front burner of discussions will
create more awareness and aid implementation of recently signed National
Emergency Flood Preparedness and Response Plans,” he stated.
It is now time to review laws and regulations protecting citizens.
Complete the Dasin Hausa Dam in Adamawa State, a buffer dam expected to control
the excess water from Lagdo Dam from Cameroon as this will help the country’s
risk reduction efforts. Both structural and nonstructural approaches should be
employed in building resilient cities and communities.
*Ogunnigbo
is an environmental consultant at Going Green International Consults Limited femiogunnigbo@gmail.com; Ogunwumi is a flood risk consultant and a G.I.S.
expert.
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