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Is small better ? a comparison of the effect of large and small dams on cropland productivity in South Africa, Volume 1
Author:Blanc, Elodie; Strobl, Eric; Country:South Africa;
Date Stored:2013/08/13Document Date:2013/08/01
Document Type:Policy Research Working PaperSubTopics:Dams and Reservoirs; Hydro Power; River Basin Management; Water Supply and Systems; Water and Energy
Report Number:WPS6567Collection Title:Policy Research working paper ; no. WPS 6567
Volume No:1  

Summary: This study estimates and compares the effects of small and large irrigation dams on cropland productivity in South Africa. To this end, a panel data set of South African river basins is constructed. The econometric analysis reveals that although large dams increase cropland productivity downstream, they have a negative effect on cropland within the vicinity. However, their existence can enhance the relatively small positive impact of local small dams. Although a cost-benefit analysis of irrigation benefits shows that small dams may be more viable than large ones, large dams can play a potentially important role within a system of both types of dams.

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