Vol: 1 Issue: 1
URBAN STORM WATER DRAINAGE SYSTEMS MODELING FOR OBUBRA CENTRAL SENATORIAL DISTRICT, CROSS RIVER STATE OF NIGERIA.
Obio, E. A, Ahaneku, I.E., Onwuka, U.N.
Introduction
Water is the common natural resource and necessary for all living things. However, the present situation of water quality management in the world is not acceptable, mainly due to the forces of increasing population and economic development.
Drainage systems are needed in urban areas because of the interaction between human activity and the natural water cycle. This interaction has two main forms: the abstraction of water from water bodies to provide water supply for human life, and the covering of land with impermeable materials to divert rainwater away from the local natural system of drainage. These two types of interaction give rise to two types of water that requires drainage (Butler and Davies, 2004). Waste water is water that has been supplied to maintain standard of living and satisfy the needs of industry after use, if not drained properly, it could cause pollution and create health risks. Wastewater contains, fine solids and large solids originating from water closet (WCs), from washing of various sorts, from industry and other water uses.
Urban drainage system handles these two types of water with the aim of minimizing the problems caused to human life and the environment.
Urban drainage has two major interfaces with the public and the environment.