Calibration of Rainfall-Rainwater Capturing Mecha-nism Using Integrated Water Management Model (IWMm) in Auchi, Nigeria
Journal Title: Analele Universitatii "Eftimie Murgu" Resita. Fascicula de Inginerie - Year 2015, Vol 22, Issue 2
Abstract
Accessibility of safe drinking water is a serious constraint in Auchi and its environs. This region mainly depends on rainwater and groundwater exploration. Sensitivity simulation analysis using structured IWRM model shows that there is a strong relationship with the rainfall, rain-water capture and roof plan size (RPS). Average annual rainfall of 1430 mm and 1600 mm simulated with varying roof plan surfaces (RPS) of 100 m2, 250 m2; 500 m2; 1000 m2; and 2000 m2 produced RWHI index of 0.1, 0.24, 0.47, 0.94 and 1.89 respectively. Simulation output indicated that an average of 5,300m3 /day of rainwater were harvestable and this value of water could only meet daily water demand of 40,769 people. The output of statistics metrics shows a perfect match (RPS) and harvested rainwater as R2= 0.78; 0.77 and r.m.s of 0.100 respectively. The overall result shows that if the potential of rainwater harvest is fully-harnessed, that will reduce the water stress and constrain in Auchi.
Authors and Affiliations
Olotu Yahaya, E Alimasunya, A. A. Rodiya, S. Olaiya
Keywords
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