Geospatial Techniques for the Assessment and Analysis of Flood Risk along the Niger-Benue Basin in Nigeria

Nkeki, Felix Ndidi; Henah, Philip John; Ojeh, Vincent Nduka

doi:10.4236/jgis.2013.52013

Cited by 46 publications

(36 citation statements)

References 6 publications

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“…Also, the floodplain vulnerability of Niger around the confluence and downstream of Lokoja to the acute delta will probably be very high class. This agreed with the results of (Nkeki et al, 2013) which identified high population at risk.…”

Section: Peak Flow Analysissupporting

confidence: 82%

Changes in flood risk in Lower Niger–Benue catchments

et al. 2015

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Abstract. Floods are devastating natural disasters with a significant impact on human life and the surrounding environment. This paper analyses historical and recent flood (2012 extreme) peak flow at strategic locations, land use activities and Floodplain Vulnerability Index analyses of the Niger-Benue River Floodplain. The 2012 peak flow at Jederbode on the Niger River was about 50 % above the long term average. At Jebba (Niger), the 2012 peak flow of 1567 m 3 s −1 was also far higher than the long term mean annual peak flow of 1159 m 3 s −1 . The 2012 peak flow at Lokoja was also about 50 % above the historical average. The Benue River at Makurdi had peak flow of 16 387 m 3 s −1 which was also unusually higher than the historical average while Wuroboki (Benue) had peak flow of 3362 m 3 s −1 which was also much higher that the historical average (694 m 3 s −1 ). The mixed land use which supported diverse ecosystem services has the largest cover of 5654 km 2 (36.85 %) of the Niger-Benue floodplain. The flood vulnerability of the various land uses within the floodplain include; medium, high and very high levels. A four levels hierarchical implementation adaptation strategy for sustainable agricultural practices along the rivers flood plain was proposed. The implementation hierarchy includes: Community Concern, Local Authority Concern, State Concern and National Concern.

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Section: Peak Flow Analysissupporting

confidence: 82%

Changes in flood risk in Lower Niger–Benue catchments

et al. 2015

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“…Downstream catchment of the Kaduna River is found in Niger state, and comprise of Shiroro reservoir watershed and stretches to Lavun (Figure 1). Niger state lies within the Northern Guinea Savannah Zone of Nigeria with sub-basin location of latitudes 09˚06'32.64"N to 11˚30 '12.64"N and longitudes of 05˚30'39.34"E to 07˚04'44.34"E. the state is the third most affected in 2012 flood occurrence with 6 LGAs submerged −1502 km 2 [29]. Out of the whole Kaduna basin area of 45,606 km 2 , the sub-basin makes up 45% and its annual precipitation ranges between 1100 to 1500 mm with distinct wet and dry seasons with an annual evaporation loss ranging between 2480 m and 4350 m. The Shiroro dam reservoir (320 km 2 ), situated on the eastern part of Niger state was built primarily for purpose of supplying needed energy to power the country's growing economy of about 500 MW commissioned in 1990.…”

Section: Case Studymentioning

confidence: 99%

Households Vulnerability and Adaptation to Climate Variability Induced Water Stress on Downstream Kaduna River Basin

Okafor¹,

Sadiku²,

Okhimamhe³

et al. 2017

AJCC

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Water stress is one of the risks emanating from worsening climatic variations. It poses serious threats on vulnerable continents, people and livelihoods globally. However, little information is available on how the specific climate threat is impacting people's livelihoods and water resources on different temporal and spatial scales in Nigeria basins. This study aimed at investigating household vulnerability and adaptation to water stress induced by climate variability on a downstream Kaduna River basin with the goal of supporting/facilitating climate change adaptation. The research analyzed hydro-climatic data and employed vulnerability-based framework consistent with stakeholders' participatory approach, within the context of current climate conditions experienced, and/or water stress conditions already affecting household livelihoods in six communities at three study sites; Shiroro, Gbako and Lavun, and adaptive strategies engaged to deal with water stress. Findings revealed that households have been exposed and experienced changes in water availability through variations in rainfall, temperature and runoff. Consequently, these changes have impacted on food production and livelihoods. Households have individually and collectively employed adaptation techniques which are reactive, short-term indigenous coping strategies usually adopted during periods of stress to minimize water-related vulnerabilities. The study demonstrated how an understanding of the local household vulnerabilities will enable the recognition of early indicators of water stress in addition to the occurrence of extreme events. Overall, households' vulnerability decreased from one village to another due to differences in sensitivity to stress, access to resources and local institutional capacity. Resilience of households can be increased through early warning system during flood

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“…Menjadi penyebab kerusakan ekonomi dan sosial yang signifikan dibandingkan bencana alam lainnya (Nkeki, F.N., Henah, P.J., Ojeh, V.N., 2013). Peristiwa banjir bandang memiliki dampak sosial dan ekonomi yang besar, menyebabkan penduduk kehilangan rumah dan memerlukan biaya tinggi untuk memulihkan kerusakan (Rosso, R., dan Rulli, M.C., 2002).…”

Section: Pendahuluanunclassified