POTENTIALS OF ROOFTOP RAINWATER HARVESTING AT BAYERO UNIVERSITY NEW CAMPUS, KANO

Abstract

Rainwater harvesting is receiving attention world wide as an alternative source of water. The present study was undertaken to assess the potentials of rooftop rain water harvesting technique in the sustainable development of water resources of Bayero University Kano (New Campus).The harvesting potential, yield factor, catchment area were determined and water samples were collected for water quality analysis. The result showed that, 322,645m3 of rooftop rainwater can be harvested annually; the yield factor was computed to be 88% and the catchment area was found to be 293,725m2.The rain water quality was assessed, parameters such as pH, hardness, acidity, turbidity, electrical conductivity, total suspended solids and total dissolved solids were found to be below the maximum values of World Health Organization (WHO) standard. It is was found that the harvested volume can cater for 36% of the water demand within the campus.