Floodplain mapping of Rima River Using GIS and Remote Sensing (Argungu Axis, Nigeria. (original) (raw)

The world has recorded severaldisasters within this decade, most of which are deadly, apart from lives and propertieslost, Billions of dollars have been wasted and used to build camps and relocation of victims. One of the commonest of them is flood. In Asia, Europe, Africa and Arab Nation this menace as being a serious threat to national development. Argungu is well-known town for its Argungu Fishing festival, this same local government has experienced several degree of flood. This paper seeks to provide one of the solution that can assist in solving problem of flood by providing the floodplain map of Argungu local government of Nigeria. The GIS and Remote Sensing method was used. Landsat Image and Shuttle Radar Topography Mission (SRTM) DEM Data were downloaded from USGS Earth Explorer. Subsetting (Clipping), correction for cloud cover and atmospheric effect was made, the image was classified into four classes using the supervised classification approach. These areCommunities, Water, Fadama and Farmland. This will assist in knowing the area of flooding, The flood risk zone are classified into four namely:-High Flood Risk Zone, Average Flood Risk zone, Low Flood Risk zone and Very Low Flood Risk zone. It was observed that, the High Flood risk zone with land coverage of 7,888.026Heacatres, Average Flood Risk Zone with 8268.818 Hectares, Low flood risk Zone with 8807.854 hectares and Very low flood risk Zone with 9,3723,152. Some of the villages are within the high Risk zone, which is dangerous to their lives and properties. The built environment with the high flood risk zone can be relocated to avert any disaster in the future. It could therefore be concluded that Floodplain Mapping is very essential in order to sustain any meaningful Local, State, National and international development.