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M. I. Alfa
Department of Civil Engineering, University of Jos, Nigeria
Nigeria

Civil Engineering and Lecturer I

M. A. Ajibike
Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Nigeria
Nigeria

Water Resources and Environmental Engineering, and Reader

R. E. Daffi
Department of Civil Engineering, University of Jos, Nigeria
Nigeria

Civil Engineering and Senior Lecturer

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Application of Analytic Hierarchy Process and Geographic Information System Techniques in Flood Risk Assessment: A Case of Ofu River Catchment in Nigeria

M. I. Alfa, M. A. Ajibike, R. E. Daffi
  J. Degrade. Min. Land Manage. , pp. 1363-1372  
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Abstract


Flood risk assessment of Ofu River Catchment in Nigeria was carried out by integration of thematic maps in ArcGIS 10.2.2. Analytic Hierarchy Process (AHP) was applied in the decision making and ranking of flood causative factors before their integration for development of hazard map in ArcGIS. The social and physical vulnerability of the catchment were considered in the development of the vulnerability map. The flood risk map was developed as a product of the hazard and vulnerability map. The results showed that the land areas within the Very High and High Risk zones were respectively 163.07 km2 and 392.63 km2 with Igalamela/Odolu Local Government Area (LGA) accounting for about 62% and 31% respectively. A total of 19, 034 and 47,652 persons are respectively at very high and high risk of flood within the catchment. Oforachi community in Igalamela/Odolu LGA and Ejule Ojebe Community in Ibaji LGA both in Kogi State are respectively at Very High and High Risk of Ofu River flood. High Impacts were recorded by about 35% and 52% of Oforachi Community during the 1995 and 2000 historical flood events. A watershed management plan is therefore required to prevent the serious damage experienced in previous flood events.

Keywords


analytic hierarchy process; flood; hazard; multi-criteria evaluation; risk; vulnerability

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References


Adebayo, A.A. and Oruonye, E.D. 2013. An Assessment of the effects of the 2012 Floods in Taraba State, Nigeriaā€¯, Annual National Conference, organized by the Association Hydrological Science University of Agriculture, Abeokuta, Ogun, state, Nigeria, 2013.

Ajin, R., Krishnamurthy, R., Jayaprakash, M. and Vinod, P. 2013. Flood hazard assessment of Vamanapuram River Basin, Kerala, India: An approach using Remote Sensing & GIS techniques, Advances in Applied Science Research 4(3): 263-274.

Alfa, M.I. 2018. Flood Risk Assessment of Ofu River Catchment in Nigeria. Unpublished PhD research in the Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Nigeria.

Alfa, M.I., Ajibike, M.A., Adie, D.B. and Mudiare, O.J. 2018. Assessment of the effect of land use/land cover changes on total runoff from Ofu River catchment in Nigeria. Journal of Degraded and Mining Lands Management 5(3): 1161-1169.

AR-AR Partnership. 2004. Oforachi Irrigation Project Contract Documents Volume III: Main Report Prepared for Lower Benue River Basin Development Authority, Federal Republic of Nigeria (Unpublished).

Balica, S. F., Douben, N. and Wright, N.G. 2009. Flood vulnerability indices at varying spatial scales. Water science and Technology 60(10): 2571-2580.

Baas, S., Ramasamy, S., DePryck, J.D. and Battista, F. 2008. Disaster risk management systems analysis: A guide book (Vol. 3). Food and Agriculture Organization of the United Nations.

Cutter, S.L., Mitchell, T.T. and Scott, M.S. 1997. Handbook for Conducting a GIS-Based Hazard Assessment at the County Level. Prepared for South Carolina Emergency Preparedness Division, Office of the Adjutant General. Accessed 25/01/2016 from https://www.researchgate.net/ publication/257343365_ Handbook_for_conducting_a_GIS-based_ hazards_assessment_at_a_county_level

Daffi, R.E., Otun, J.A. and Ismail, A. 2014. Flood hazard assessment of river DEP floodplains in North-Central Nigeria. International Journal of Water Resources and Environmental Engineering, 6(2), 67-72.

de Brito, M.M. and Evers, M. 2016. Multi-criteria decision-making for flood risk management: a survey of the current state of the art. Natural Hazards and Earth System Sciences 16(4): 1019-1033.

Eleuterio, J. 2012. Flood Risk Analysis: Impact of uncertainty in hazard modelling and vulnerability assessments on damage estimations. PhD thesis at the Augustin Cournot Doctoral School, Water Science & Environmental Economics, Department of Civil Engineering, the University of Strasbourg.

Federal Ministry of Works. 2013. Highway Manual Part I-Design Volume IV: Drainage Design. Abuja. Author

Jeb, D.N. and Aggarwal, S.P. 2008. Flood inundation hazard modeling of the River Kaduna using Remote Sensing and Geographic Information Systems, Journal of Applied Sciences Research 4(12): 1822-1833.

Komolafe, A.A., Adegboyega, S.A.A. and Akinluyi, F.O. 2015. A Review of Flood Risk Analysis in Nigeria, American Journal of Environmental Sciences 11(3): 157-166.

Krejcie, R.V. and Morgan, D.W. 1970. Determining Sample Size for Research Activities. Educational and Psychological Measurement, #30, pp. 607-610

Nwafor, J.C. 2006. Environmental impact assessment for sustainable development: the Nigerian perspective. Environment and Development Policy Centre for Africa (EDPCA).

Obeta, M.C. 2014. Institutional Approach to Flood Disaster Management in Nigeria: Need for a Preparedness Plan, British Journal of Applied Science & Technology 4(33): 4575-4590.

Ojigi, M.L., Abdulkadir, F.I. and Aderoju, M.O. 2013. Geospatial mapping and analysis of the 2012 flood disaster in central parts of Nigeria. In 8th National GIS Symposium. Dammam. Saudi Arabia (pp. 1067-1077).

Olajuyigbe, A.E., Rotowa, O.O. and Durojaye, E. 2012. An assessment of flood hazard in Nigeria: The case of mile 12, Lagos, Mediterranean Journal of Social Science 3(2): 367-375.

Saaty, T. 1980. The Analytical Hierachy Process. New York. McGraw Hill.

The Research Advisors. 2006. Sample Size Table. http://research-advisors.com


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