SPATIO-TEMPORAL ANALYSIS OF AREAS VULNERABLE TO FLOODING IN IBAJI LOCAL GOVERNMENT AREA KOGI STATE, NIGERIA
SPATIO-TEMPORAL ANALYSIS OF AREAS VULNERABLE TO FLOODING IN IBAJI LOCAL GOVERNMENT AREA KOGI STATE, NIGERIA
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Date
2017-03
Authors
MOHAMMED, Abdulsamad
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Abstract
The study focused on the Spatio-temporal analysis of areas vulnerable to flooding in Ibaji Local Government Area. Flood is an environmental hazard resulting largely from events such as heavy rainfall that lead to overflow of land area. Field survey, Satellite imageries, Global Positioning System (GPS), Shuttle Radar Topographic Mission (SRTM), Rainfall data and Questionnaires administration were the materials and methods used for the study. Medium resolution Landsat 8 imagery, elevation, slope, soil data, land use, drainage density and rainfall data were imputed into GIS as factor maps to determine which has more influence on the occurrence of flood. The results of the study revealed that rainfall has the greatest influence on flood occurrence in the study area. Other factors such as elevation, slope, drainage, land use and soil types represent significant factors of flooding. The results further revealed that, about 25% of the total land area is highly vulnerable to flooding, while moderate and low vulnerable areas constitute 21.875% and 53.125% respectively. The study also showed that the flood trend is increasing from the riverine areas to the hinter land and 96% of the respondents believe that the damage caused by flood in Ibaji is very serious, while only 4% are of the view that it is not serious. Also, 81.2% suggested government policies as flood control measure, 11.9% and 6.9% suggested public enlightenment and community effort respectively. In view of the risk which the people in the area are exposed to and the extent of environmental damage, there is great need for Settlements that are within or adjacent to the areas liable to flooding should be relocated where possible and future settlements should be discouraged.
Description
A DISSERTATION SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES AHMADU BELLO UNIVERSITY, ZARIA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF THE DEGREE OF MASTER OF SCIENCE IN REMOTE SENSING AND GEOGRAPHIC INFORMATION SYSTEM DEPARTMENT OF GEOGRAPHY, FACULTY OF PHYSICAL SCIENCE, AHMADU BELLO UNIVERSITY, ZARIA, NIGERIA
Keywords
SPATIO-TEMPORAL,, ANALYSIS,, VULNERABLE,, FLOODING,, IBAJI,, KOGI,, NIGERIA