Research Article | OPEN ACCESS
Hydrological Study, Site Selection and Potential Evaluation of Small Hydropower in Kedougou Basin using Soil Water Assessment Tool
1Ibrahima Ndiaye, 1Soussou Sambou, 1Issa Leye and 2Moustapha Diaw
1Hydraulic and Fluids Mechanics Laboratory, Faculty of Sciences and Technology, Cheikh Anta Diop University, BP 5005,
Dakar-Fann, Senegal
2Polytechnic High School, International Center of Training and Research in Solar Energy, Cheikh Anta Diop University, BP 5005,
Dakar-Fann, Senegal
Research Journal of Applied Sciences, Engineering and Technology 2023 1:1-15
Received: March 15, 2023 | Accepted: June 03, 2023 | Published: November 30, 2023
Abstract
The objective of this study is to evaluate the hydropower potential of Kedougou stream gage on Gambia River using Soil and Water Assessment Tool (SWAT) for a small hydropower plant with at least a head of 20 m. The daily average flows and the daily observed precipitations on the period from 1999 to 2003 are used as inputs for calibration, and the period from 2004 to 2006 are used for validation. The two criteria of goodness of fit used for calibration and validation steps are respectively: coefficient of determination R2 and Nash-Sutcliffe Efficiency coefficient (NSE). The first have been found to be equal to 0.76, and the second to 0.75. Fifty-one sites have been found on the 13 streams flows of the watershed. Since these sites are all ungagged, daily flow have been generated on each of them using SWAT hydrological model. Then Flow Duration Curves have been plotted for each of these sites using Weibull plotting position. Discharges met or exceeded 40, 50 and 60% of time are evaluated and the corresponding hydraulic potential estimated. A total of 118701 KW, 42771 KW, and 5689 KW can be estimated with 40, 50 and 60% dependability respectively, in the 51 sites. These results will help policy makers, public authorities, and investors in the energy sector to select suitable sites for implement small hydropower plants and to optimize the available renewable resources. They will by this way meet the energy needs of rural areas for productive uses.
Keywords:
Small hydropower, SWAT, hydrological, hydropower Potential, site selection,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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