Assessment of urban drainage system in Nigeria: a review

Abstract

One of the observable impacts of rapidly growing urbanization and economic development in emerging cities of developing nations is witnessed in drainage problems connected to poor sanitation. This study is aimed at reviewing the various challenges of urban drainage systems in Nigeria and to suggest means to reduce these challenges by providing contributory factors to the blockage of drainage systems and how they can be controlled. The review showed that ineffective drainage systems are basically associated with poor maintenance, indiscriminate dumping of refuse in drains, erection of building on drainage channels and alignments that inhibit the flow of water which leads to critical environmental hazards. The review suggests new approach that could be used to achieve sustainable and effective sanitation which would support government’s effort in upgrading urban services by preparing plans and feasibility studies, improving drainage maintenance procedures and effectively manage human waste disposal.