Nigeria has recorded huge loss of lives and property to floods in recent years. In Ibadan, many people were displaced and many farms destroyed as a result of recent flooding. The people’s activities within the catchment area in their quest for more lands to accommodate their agricultural and developmental activities, coupled with the undulating surface of the study area, may have increased the degree of flooding experienced. This study therefore focused on flood and erosion control using GIS and remote sensing. To achieve this, the digital terrain model (DTM) of the area was developed using ArcGIS 10.1 software. A comprehensive method of data collection involving aerial photography, satellite imagery and hand-held global position system (GPS) were employed. The GPS was used to collect information on the location of structures critically affected by the 2011 and 2012 floods. It was also used to collect locality information on training sites for land use/land cover classification. Land use/land cover (LULC) change detection was carried out for the area using the 1984 and 2014 Landsat images in IDRISI Selva 17.0 (http://www.clarklabs.org/products/idrisi-taiga.cfm). The vegetation cover, as revealed by the processed satellite images, has decreased by 41.30%, while farmlands and built up areas increased by 20.20% and 38.52% respectively within the period. The study also revealed that the majority of human activities like cultivation and physical developments take place within the flood plain. This therefore increases the risk of biodiversity loss as plants are destroyed and animals displaced due to flooding and erosion. The findings of this study would assist relevant authorities in mitigating the impacts of these environmental problems. The results of this study show that the integration of remote sensing and GIS technologies provide valuable documentation and quantification of environmental problems.