Evaluation And Monitoring of Flood Encroachment Along the Floodplain of Kaduna Metropolis, Kaduna, Nigeria.

Abstract

Urbanization and expansion of structural developments along flood prone areas of settlements in Nigeria are challenges which requires dynamic predictions of inundation among regions; Thus, development for the propagation of flood waves along corridors, floodplain and river bank calls for a quick response. The study investigates on the pattern of the monitoring system, as well as areas vulnerable in relation to reported case of historic flooding using Strategic evaluation and real-time monitoring with remote sensing and GIS to provide a veritable tool of spatial and temporary impact of the existing features and future of land use changes in the study area. The flood gauge as constructed by the National institute of Water Resources Kaduna created on the bases of historic flood events. As calibrated showing colors heights and history as warning to the public and individual residing on the low land and flood plains. The elevation surface, development pattern, and volume for river was investigated and correlated with rainfall precipitation data acquired. The Passed reports of flooding events, historic height was investigated to determine the legitimacy of the monitoring system as reported. Thus, the project proves that Spatial statistical tool can be used to helps in the modification for floodplain development investigation. The land use changes along the flood plain indicating that the Kaduna River is covered with a maximum encroachment rate of 76%, and with kapper coefficient of 68 %. The result of the rainfall data also shows the influences of rainfall to flooding as well as urban encroachment. Places like Kigo road, Barnawa, Narayi, Kamazuo, Kawo, Kudenda, Kakuri, Television, Angwa-Muazu, Sabon, Tudun Wada, Kabala Dokan, Living Faith Church area and parts of Kaduna state stadium are more vulnerable.