Modeling and Simulation of Flood Hazard Scenarios on Lowly Morphometric Drainage Terrain in Rivers State, Nigeria

The continuous flooding of Rivers State drainage basins is as a result of rapid rate of population growth, increased economic activities, land cover change, urbanization and urban expansion, infrastructural and housing development leading to encroachment on the flood plains and natural drainage basins. This has caused grave socio-economic impacts on the human society. This study Model and Simulate Flood Hazard Scenarios on Lowly Morphometric Drainage Terrain in Rivers State, Nigeria. The study adopted study adopted the GIS based hydrological and hydraulic model of Run off and river flow research design employing the use of employing the Watershed Modeling System (WMS). The modelled hydrological and drainage basin parameter and data was simulated using C++ computer programming language. Findings of the study revealed that seven (7) lowly morphometric drainage basins exist in Rivers State with varying levels elevations ranging from -10m to 41.3m affecting the rate of storm water – stream flow length and velocity thus depicting the variations in the level of flood hazards. The study thus recommends that a ten-year routine and regular catchments and digital elevation modeling be carried out as well as reactivation of the drainage Master Plan of Rivers State be done to tackle flood issues and ameliorate its socio-economic impacts.