February 2014

Flood hazard assessment of River Dep floodplains in North-Central Nigeria

Flood is a recurring event that leads to hazards. The probability of a flood occurring is normally investigated followed by flood hazard mapping which defines the areas that are at risk of flood inundation. This study carries out flood hazard assessment for the flood prone areas within the low-lying flat river valley of the River Dep watershed using Remote Sensing (RS) and geographic information system (GIS) for...

Author(s): Daffi, Rose E. , Otun Johnson A. and Ismail Abubakar

February 2014

Catchment dynamics and its impact on runoff generation: Coupling watershed modelling and statistical analysis to detect catchment responses

Catchment response as consequence of changes in vegetation cover and land use management could not be well explained by statistical methods alone. At the same time, long range periodic and trend components of time series are not adequately predicted by watershed modeling. Therefore, joint application of statistical time series analysis and watershed modeling better help to understand the underlying climate variability...

Author(s): Negash Wagesho

February 2014

Heavy metals assessment of private drinking water supplies in Ibadan, Nigeria and associated health risks

The aim was to measure the concentrations of heavy metals in groundwater obtained from 30 randomly selected domestic wells and 10 stream locations all in Ibadan, Nigeria, compare the results with the World Health Organization guidelines, draw conclusions and make recommendations. Water samples were obtained and analysed for Pb, As, Cd, Zn, Cu, Cr, Fe and Mn. Overall, the minimum concentrations of Pb, As, Cd, Cr and Fe...

Author(s): B. A. Adelekan and Oguntoso N.