FLOOD I~ISK MAPPING IN KADUNA METROPOLIS USING SPOT XS SATELLITE DATA.

Abstract

This project demonstrates the application of Remote Sensing and geographical Information System in Mapping areas under the threat of land degradation as a result of flooding in Kaduna metropolis. SPOT XS Multispectral satellite data was used to obtain information layers such as settlements, drainages, roads of the study area which served as input into a Geographical \ Information System (GIS). Surface data was obtained through manual digitization of topographical map of the study area to generate a Digital Terrain Model (DTM). Also GPS heights were taken at maximum flood limits from field surveys to create a buffer zone of the study area. The analyzed image data layers, digital Terrain model, the GPS flood limit heights were dropped by GIS technique to have a perspective view (Flood Model). The final n.:sults that is the flood risk zones (map) and the attribute table showing flood risk zones could thereby serve as a viable input to policy makers in management of lanel degradation problems in the study area.