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Should Benji Dam be dredged? A preliminary impact assessment to dredging a water reservoir in an African national park

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  • C. Tafangenyasha

Abstract

Benji Dam in the Gonarezhou National Park, Zimbabwe, which was built in 1974 with the potential to hold in excess of 200000 m3 of water, is at risk from siltation. The cause of the siltation is catchment degradation due to overgrazing and declining woodland cover. A cost–benefit analysis highlighted the importance of Benji Dam to tourism. The possible disposal of the dredged silt creates a dilemma, as it constitutes a possible environmental hazard. A strong mitigating factor exists against dredging in a national park unless a suitable site for the silt disposal can be found.

Suggested Citation

  • C. Tafangenyasha, 1997. "Should Benji Dam be dredged? A preliminary impact assessment to dredging a water reservoir in an African national park," Environment Systems and Decisions, Springer, vol. 17(3), pages 191-195, September.
    • Handle: RePEc:spr:envsyd:v:17:y:1997:i:3:d:10.1023_a:1018572605194
    DOI: 10.1023/A:1018572605194
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    Cited by:

    1. Clifford Tafangenyasha & Patmore Ngorima & Stanely Musungwa & Blessing Kavhu, 2018. "Modifications of the Flora Zambeziaca in the Zambezi Basin by Environmental Antecedent Factors: Termites, Fire and Elephant," International Journal of Environmental Sciences & Natural Resources, Juniper Publishers Inc., vol. 12(3), pages 75-84, June.
    2. Shobeir Karami & Ezatollah Karami, 2020. "Sustainability assessment of dams," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 22(4), pages 2919-2940, April.

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