CHARACTERISTICS OF MICRO-DRAINAGE SYSTEM AND ITS ENVIRONMENTAL IMPLICATIONS IN URBANIZED TROPICAL CITY OF ILORIN, NIGERIA
Journal Title: Analele Universitatii din Oradea, Seria Geografie - Year 2018, Vol 28, Issue 2
Abstract
The importance of micro drainage infrastructure, especially in rapidly growing cities cannot be over-emphasized. It is needed to evacuate storm runoff and household sewage to the natural drainage in order to prevent flooding and pollution; and promote public health and safety. The efficiency and effectiveness of this drainage infrastructure however depend on their distribution, size, and integration with the natural drainage. In this study, the effect of drainage capacity expressed as a product of length, width and height on efficiency and effectiveness have been explored. Data used were sourced from the field personally by the researcher during the peak period of rainy season in year 2015. Result obtained indicates that the dimension of the drainage channels are just too small for efficient transmission out the city, the increased runoff discharge brought about by increased frequency and intensity of rainfall induced by climate change and catalyzed by rapid rate of urbanization in the study area. People’s poor solid waste generation and disposal attitude was also observed as one of the problems confronting the effectiveness of micro drainage in the study area; this is because sediments of various types were found reducing flow efficiency in the drainage channels. Methods that can be used to effectively manage the drainage channels were subsequently recommended.
Authors and Affiliations
Kayode IROYE
Keywords
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