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Is small better ? a comparison of the effect of large and small dams on cropland productivity in South Africa

  • Blanc, Elodie
  • Strobl, Eric

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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Paper provided by The World Bank in its series Policy Research Working Paper Series with number 6567.

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Date of creation: 01 Aug 2013
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Handle: RePEc:wbk:wbrwps:6567
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  1. Driscoll, John C., 2004. "Does bank lending affect output? Evidence from the U.S. states," Journal of Monetary Economics, Elsevier, vol. 51(3), pages 451-471, April.
  2. Vivien Foster & Cecilia Briceno-Garmendia, 2010. "Africa's Infrastructure : A Time for Transformation," World Bank Publications, The World Bank, number 2692.
  3. John C. Driscoll & Aart C. Kraay, 1998. "Consistent Covariance Matrix Estimation With Spatially Dependent Panel Data," The Review of Economics and Statistics, MIT Press, vol. 80(4), pages 549-560, November.
  4. repec:iwt:bosers:h026190 is not listed on IDEAS
  5. Elodie Blanc & Eric Strobl, 2013. "The impact of climate change on cropland productivity: evidence from satellite based products at the river basin scale in Africa," Climatic Change, Springer, vol. 117(4), pages 873-890, April.
  6. Keller, A. & Sakthivadivel, R. & Seckler, D., 2000. "Water scarcity and the role of storage in development," IWMI Research Reports H026190, International Water Management Institute.
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