Capacity and Quality Assessment of Awba River Basin
Abstract
This study aims at determining the feasibility of a Mini Water Supply Scheme to meet the growing water needs of The Polytechnic, Ibadan community. The assessment focused on determination of population of the subject community vis-à-vis the location, discharge capacity and quality status of Oba river basin, being the only perennial stream within the community, seeking possible opportunities for capacity building in the areas water based developmental activities. The entire population of the community was obtained by enumeration method with 10years projection considered at a growth of 4 percent on yearly basis. Water budget was arrived at on the basis of per capita per day, in accordance with the United State specification. Raw water supply was obtained through impounding system of reinforced concrete chamber, which serves as an alternative to costly dam construction. Grid survey was carried out to determine the topographical nature along the stream axis at proposed location of the impounding house. Hydrological studies were carried out on the river to obtain its rate of flow and the harvestable volume of raw water at each month of a year. This was used to determine the size of chamber and the impounding hours before pumping. Physico-chemical analysis of the raw water was carried out and the results compared with that of W.H.O’s 1996 guide line for drinking water as to dictate the design of treatment plant and the recommendable chemical dosage. The study thus reveals that the available perennial stream within the community is a resource that could be utilized to alleviate the problem of acute water shortage and create better environment for research and other developmental activities of the institution.
Key Words: Population, Raw Water, Capacity and Quality Assessment, Treatment.
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ISSN (Paper)2224-5790 ISSN (Online)2225-0514
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