SEDIMENTATION AND PHYSICO-CHEMICAL CHARACTERISTICS OF OYAN RESERVOIR, SOUTH WEST NIGERIA

Adewara, M.B and Adedokun, A.M and Ayoola, S.B (2020) SEDIMENTATION AND PHYSICO-CHEMICAL CHARACTERISTICS OF OYAN RESERVOIR, SOUTH WEST NIGERIA. In: National Association of Surveying & Geoinformatics Lecturers (NASGL), 9th –13thMarch, 2020, Oyo.

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Abstract

The paper presents the results of a study of Sedimentation and physico-chemical characteristics of Oyan dam reservoir, Ogun state, Nigeria. The public outcry about the fear of the quality of water from the reservoir by local communities near the dam as well as the effect of sedimentation on the unproductive hydropower functionalities of the dam necessitated this study. The spatial positions of the details within the study area as well as bathymetric survey to determine the sediment depths was carried out. Obtained data were processed and presented in Microsoft Excel, Notepad, HYPACK, Autodesk’s AutoCAD Civil 3D 2012, suffer 11 and ArcGIS 10.6 respectively. The volume of sediment for the portion of the dam sounded was calculated in Model Maker 13.03. Test for the physico-chemical characteristics of the water samples collected from the dam were conducted. Results of the test was compared with the World Health Organization (WHO) threshold and the Nigerian Standards for Water Quality (NSWQ) limits for portable water. Although the dam water quality is fit for its intended purposes, but then sedimentation is on the increase and this increase can trigger the concentration of the tested parameters. This may affect the quality of water in the future as well as reduce the power supply capabilities of the dam since high sedimentation will reduce the water carrying capacity required to power the turbines. The government will save millions of naira from diesel generators used in running the dam if sedimentation is monitored at regular intervals.

Item Type:	Conference or Workshop Item (UNSPECIFIED)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Engineering, Science and Mathematics > School of Geography
Depositing User:	Mr Daniel Kumoye
Date Deposited:	30 Jun 2020 15:27
Last Modified:	30 Jun 2020 15:27
URI:	http://eprints.federalpolyilaro.edu.ng/id/eprint/846

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