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The world is worried about the weather. That worry has increased in recent
years, partly because of extreme events which have affected many cities as the underlying pattern of climate change is being altered by humanity.
Humans’
interaction with their physical environment deliberately or unknowingly to
achieve a purpose has become a major source of concern as so many actions have
led to disruption. This ultimately has affected sea rise where great impact is
felt as a result of interaction with other powerful geo-morphological forces
which, in consequence, has made it impossible to predict what areas will be
made more vulnerable to regular catastrophic flooding by season rainfall across
the inland flood plain.

General
flood deposition is known to impede drainage whose process could add to the severity of flooding that can increase the risk and advance the timing of major
catastrophic channel shift along with predictions.
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Another entry point is the devastating consequences of sea rise level, especially where
rivers flow would, in turn, affect the dry season, cropping with the damage of
mangrove forest, coming with pressure to realise this highly vulnerable land
for human settlement.
While
stressing these complexities, it is important to note that any ambitious plan
to rise and elevate settlements for sea defence could be rendered
counterproductive by major change in the river sedimentation and channels.
Emerging
facts have revealed its effect to include temporary and permanent flooding
increase in human and land use with climate variability with a contribution to
greenhouse gases to global warming.
Human
activities related to how they build upon flood plain by constructing
artificial drainage lines to stormwater drain which usually changes the
physical environment to some extent. The most significant of it arises from urbanization
as it involves deforestation and land-use changes, precipitation, temperature
modification, stream network change and inter-basin water transfer which brings
about changes in morphological and hydrological states of water.
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This
two important problems resulting from urbanization of a watershed that comes’
with floods and pollution whose report indicates that it complements fossil fuel
extraction and burning to be about 0.5% in the world as a result of
deforestation and land-use change which, accordingly, is due to human action
and interference with the natural environment constituting the major cause.
The first entry point is how excess runoff drains freely into a nearby stream peak
flow with adjoining low lying area to form flood poundage and flash flood on
the street leading to human causalities.
The
flood circle in Akure and those things that count is heavy dissected by many
streams of which Ala River with numerous of its tributaries that  include
Elegbin, Ijala, Omi-ebo, Ilore and Ukere stream all along have assumed a
composite large stream towards Ala forest reserve.

Ala River is the most important of the
numerous streams that dissect Akure terrain. It carries heavy flood during the rainy season, essentially from June to September of every year.
Physical
observation shows how the flood affects the three major roads of Adesida,
Arakale and isikan which are always affected at any slight drop of rainwater.
“Worse
still, the Ondo State Government budgeted about N2billion in 2015 to tackle
ecological problems in all the zones  but
to no avail,” Kehinde Alimu, a resident in Akure metropolis said.
He said most rainfall
especially in the month of June, July and September is usually very high,
coming with the intensity that influences the catchments and
characteristics of the watershed.
“There
is the stream density, land use which influences run-off, its numerous
tributaries that cut across many areas of Akure towns.”
He
said flooding in the area could be attributed to climate change and human
factors.
The
inhabitants action alone shows there is a need for awareness in those
communities as trees are cut for commercial purposes which attract severe flooding.”  
Country Representative of Environmental Safety and
Awareness Initiative, (ESAI), Dr. Olayinka Agunloye, believes the experience
has become a recurring decimal as it has attracted international attention.
“It
has had a severe effect on the inhabitants.
Human-induced
action explains why those ravaged communities cut down trees, burn the
forest reserves that ordinarily should help them in curtailing the flood but
instead contributed to the issues of global warming which can be attributed to
what we see as an implication to change in climatic condition,” Agunloye also
said.
“The inhabitants of that region also embark on
deforestation of their forest reserve, and during the dry season, it enhances air pollution
where smoke fumes reach a harmful level in the atmosphere and that which partially
offset the rise in global means atmosphere temperature”.
Continuing,
Agunloye said Akure settlement has experienced relatively small but intensive
rainstorm flood which is climatological in its original estimates from the
excess of precipitation and natural infiltration.
“The most important single climatic factor that influences Ala River flooding in Akure
town is the nature of rainfall in terms of its magnitudes, time and
distribution,” he further said.   
Agunloye
also said man-induced problems aid climate-induced factors in Akure floods.
“There
should be a provision for disaster preparedness which should include  warning
measures to limit damages and provision to help people move to safer areas
quickly. We must have a quality provision of infrastructure for all the adjoining
towns in Akure to limit the risk of flood escalation for the whole city,”
he suggested.

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