2021
DOI: 10.1038/s41893-020-00670-7
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Performance of large-scale irrigation projects in sub-Saharan Africa

Abstract: After a thirty-year hiatus, large-scale irrigation projects have returned to the development agenda in sub-Saharan Africa (SSA). Yet, the magnitude and drivers of past schemes performance remains poorly understood. We quantify the performance of 79 irrigation schemes from across SSA, measured as the proportion of proposed irrigated area delivered, by comparing planning documents with estimates of current scheme size from satellite-derived land cover maps. We find overwhelming evidence that investments have fai… Show more

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Cited by 81 publications
(69 citation statements)
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“…In our analysis, a governance indicatordefined as the institutional capacity of countriesemerges as a socioeconomic factor that best explains the current level of sustainable irrigation deployment. Our findings on the importance of governance and institutions as key conditions for the successful deployment of such adaptation options are in line with other findings on indices reflecting adaptive capacity 9 . The two identified predictors, namely the level of governance and the share of rainfed agriculture, are able to explain more than 70% in the current variations in used sustainable irrigation potential across the globe.…”
Section: Fraction Of Yield Gap Closure Level |supporting
confidence: 92%
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“…In our analysis, a governance indicatordefined as the institutional capacity of countriesemerges as a socioeconomic factor that best explains the current level of sustainable irrigation deployment. Our findings on the importance of governance and institutions as key conditions for the successful deployment of such adaptation options are in line with other findings on indices reflecting adaptive capacity 9 . The two identified predictors, namely the level of governance and the share of rainfed agriculture, are able to explain more than 70% in the current variations in used sustainable irrigation potential across the globe.…”
Section: Fraction Of Yield Gap Closure Level |supporting
confidence: 92%
“…Overcoming socioeconomic constraints to improve adaptation deployment under climate change is a distinct possibility, and in some cases might be a necessity to prevent substantial reductions in agricultural productivity 23 . Our findings highlight that this might be all but easy given the observed evidence of socioeconomic factors limiting the effectiveness of irrigation deployment 9 .…”
Section: Fraction Of Yield Gap Closure Level |mentioning
confidence: 74%
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