Samuel Nana Safo Kantanka , Michael Addaney , Prosper Kpiebaya , Jonas Ayaribilla Akudugu , Benjamin Wullobayi Dekongmen
{"title":"加纳布伊盆地的水电大坝建设和水资源供应","authors":"Samuel Nana Safo Kantanka , Michael Addaney , Prosper Kpiebaya , Jonas Ayaribilla Akudugu , Benjamin Wullobayi Dekongmen","doi":"10.1016/j.ejrh.2025.102813","DOIUrl":null,"url":null,"abstract":"<div><h3>Study region</h3><div>Bui River Basin, Bono Region, Ghana</div></div><div><h3>Study focus</h3><div>This study evaluates the hydrological impacts of the 400 megawatt hydroelectric Bui Dam built on Ghana’s Black Volta River using remote sensing, GIS, the InVEST water yield model, and IHA analysis. The InVEST model estimated a progressive increase in annual water yield, from 3.25 MCM (2000) to 4.75 MCM (2020), with a net rise of 1.50 MCM over the study period. This trend correlated with land-use changes, including forest decline (81.4–35.8 % coverage) and urban expansion (24,713.48 ha to 95,207 ha).</div></div><div><h3>New hydrologic insights</h3><div>The IHA analysis revealed severe hydrological alterations, including a 92-day extension of dry-season flows and earlier wet-season peaks by 10 days, disrupting ecological and livelihood systems. Model validation showed strong agreement between observed and simulated yields (NSE > 0.8, R² > 0.85). The findings highlight trade-offs between hydropower generation and riverine ecosystem integrity, emphasizing the need for adaptive dam management to sustain water availability.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"62 ","pages":"Article 102813"},"PeriodicalIF":5.0000,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Hydro-power dam construction and water availability in the Bui Basin of Ghana\",\"authors\":\"Samuel Nana Safo Kantanka , Michael Addaney , Prosper Kpiebaya , Jonas Ayaribilla Akudugu , Benjamin Wullobayi Dekongmen\",\"doi\":\"10.1016/j.ejrh.2025.102813\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Study region</h3><div>Bui River Basin, Bono Region, Ghana</div></div><div><h3>Study focus</h3><div>This study evaluates the hydrological impacts of the 400 megawatt hydroelectric Bui Dam built on Ghana’s Black Volta River using remote sensing, GIS, the InVEST water yield model, and IHA analysis. The InVEST model estimated a progressive increase in annual water yield, from 3.25 MCM (2000) to 4.75 MCM (2020), with a net rise of 1.50 MCM over the study period. This trend correlated with land-use changes, including forest decline (81.4–35.8 % coverage) and urban expansion (24,713.48 ha to 95,207 ha).</div></div><div><h3>New hydrologic insights</h3><div>The IHA analysis revealed severe hydrological alterations, including a 92-day extension of dry-season flows and earlier wet-season peaks by 10 days, disrupting ecological and livelihood systems. Model validation showed strong agreement between observed and simulated yields (NSE > 0.8, R² > 0.85). The findings highlight trade-offs between hydropower generation and riverine ecosystem integrity, emphasizing the need for adaptive dam management to sustain water availability.</div></div>\",\"PeriodicalId\":48620,\"journal\":{\"name\":\"Journal of Hydrology-Regional Studies\",\"volume\":\"62 \",\"pages\":\"Article 102813\"},\"PeriodicalIF\":5.0000,\"publicationDate\":\"2025-09-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Hydrology-Regional Studies\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2214581825006421\",\"RegionNum\":2,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"WATER RESOURCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Hydrology-Regional Studies","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214581825006421","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"WATER RESOURCES","Score":null,"Total":0}
Hydro-power dam construction and water availability in the Bui Basin of Ghana
Study region
Bui River Basin, Bono Region, Ghana
Study focus
This study evaluates the hydrological impacts of the 400 megawatt hydroelectric Bui Dam built on Ghana’s Black Volta River using remote sensing, GIS, the InVEST water yield model, and IHA analysis. The InVEST model estimated a progressive increase in annual water yield, from 3.25 MCM (2000) to 4.75 MCM (2020), with a net rise of 1.50 MCM over the study period. This trend correlated with land-use changes, including forest decline (81.4–35.8 % coverage) and urban expansion (24,713.48 ha to 95,207 ha).
New hydrologic insights
The IHA analysis revealed severe hydrological alterations, including a 92-day extension of dry-season flows and earlier wet-season peaks by 10 days, disrupting ecological and livelihood systems. Model validation showed strong agreement between observed and simulated yields (NSE > 0.8, R² > 0.85). The findings highlight trade-offs between hydropower generation and riverine ecosystem integrity, emphasizing the need for adaptive dam management to sustain water availability.
期刊介绍:
Journal of Hydrology: Regional Studies publishes original research papers enhancing the science of hydrology and aiming at region-specific problems, past and future conditions, analysis, review and solutions. The journal particularly welcomes research papers that deliver new insights into region-specific hydrological processes and responses to changing conditions, as well as contributions that incorporate interdisciplinarity and translational science.