Spatial Analysis for Surface Water Quality Assessment of the Ikpoba River Using Geographic Information System

The aim of this study is to assess the water quality surface body in area (Ikpoba River) Benin City using Geographic Information System (GIS). present research involved spatial analysis for four stations along Ikpoba River City. were delineated satellite images Google Earth. At same time, samples collected at these and parameters such as Temperature, Turbidity, pH, Total Dissolved solids (TDS), Suspended Solids (TSS), Oxygen (DO), COD, Biochemical BOD, Electrical Conductivity (EC), Zn, Cl, NH4N, Ca, Pb, SO4, Fe, Mg, NO3, PO4, Hardness analyzed laboratory. analytical result was compared with WHO (World Health Organization) maximum permissible limits tested it found that DO, TDS, EC, Cl all fell below standard points river. Inverse Distance Weighted (IDW) employed ArcGIS software. database data created GIS interpolation according IDW method obtain distribution each selected parameter. It estimated concluded from different on river varies comparatively given by Standards, only a few falling acceptable limit extent changing respect parameter its values.