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

C. Tafangenyasha

Environment Systems and Decisions, 1997, vol. 17, issue 3, 191-195

Abstract: 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.

Keywords: Silt; Environmental Management; Nature Conservation; Impact Assessment; Water Reservoir (search for similar items in EconPapers)
Date: 1997
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DOI: 10.1023/A:1018572605194

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