Your search found 4 records
1 Ogilvie, A.; Mahe, G.; Ward, J.; Serpantie, G.; Lemoalle, J.; Morand, P.; Barbier, B.; Diop, A. T.; Caron, A.; Namarra, Regassa; Kaczan, D.; Lukasiewicz, A.; Paturel, J-E.; Lienou, G.; Clanet, J. C. 2010. Water, agriculture and poverty in the Niger River Basin. Water International, 35(5):594-622. (Special Issue on "Water, Food and Poverty in River Basins, Part 1" with contributions by IWMI authors). [doi: https://doi.org/ 10.1080/02508060.2010.515545]
River basins ; Climate ; Water resource management ; Water availability ; Water productivity ; Irrigated farming ; Rainfed farming ; Institutions ; Livestock ; Fisheries ; Poverty ; Water poverty / West Africa / Nigeria / Mali / Niger / Burkina Faso / Ivory Coast / Niger River Basin
(Location: IWMI HQ Call no: PER Record No: H043335)
(6.38 MB)
Livelihoods in the Niger River basin rely mainly on rainfed agriculture, except in the dry extreme north. Low yields and water productivity result from low inputs, short growing seasons, dry spells, and excessive water. The overlap of traditional and modern rules impedes secure access to water and investments in agriculture by generating uncertain land tenure. Improved agriculture and water management require technical, sociological, and regulatory changes to address the wider causes of poverty. Illiteracy and poor water quality, both correlated with high infant mortality, are pressing problems. Rapidly increasing population, climatic changes and dam construction contribute to rural vulnerability.
2 Ogilvie, A.; Mahe, G.; Ward, J.; Serpantie, G.; Lemoalle, J.; Morand, P.; Barbier, B.; Diop, A. T.; Caron, A.; Namara, Regassa; Kaczan, D.; Lukasiewicz, A.; Paturel, J.-E.; Lienou, G.; Clanet, J. C. 2012. Water, agriculture and poverty in the Niger River Basin. In Fisher, M.; Cook, Simon (Eds.). Water, food and poverty in river basins: defining the limits. London, UK: Routledge. pp.131-159.
Water management ; River Basins ; Agricultural production ; Rainfed farming ; Irrigated farming ; Poverty ; Social aspects ; Living conditions ; Indicators ; Water productivity ; Water availability ; Rain ; Mapping ; Agroclimatic zones ; Land tenure ; Livestock ; Fisheries ; Corporate culture / West Africa / Niger River Basin
(Location: IWMI HQ Call no: IWMI Record No: H044842)
(2.24 MB)
3 Fowe, T.; Karambiri, H.; Paturel, J.-E.; Poussin, J.-C.; Cecchi, P. 2015. Water balance of small reservoirs in the Volta Basin: a case study of Boura Reservoir in Burkina Faso. Agricultural Water Management, 152:99-109. [doi: https://doi.org/10.1016/j.agwat.2015.01.006]
Water balance ; Water resources ; Reservoirs ; Small scale systems ; Agriculture ; Water use ; Water levels ; Hydrology ; Monitoring ; Evaporation ; Rain ; Catchment areas ; Runoff ; Water flow ; Case studies / Burkina Faso / Volta Basin / Boura Reservoir
(Location: IWMI HQ Call no: e-copy only Record No: H047427)
(1.55 MB)
Effective water resources development and management is crucial for sustainable economic growth and poverty reduction in many developing countries. In West Africa, large numbers of small reservoirs with volumes from 104 to 107 m3 play a considerable role in maintaining and developing activities in remote areas and in providing irrigation water for agriculture and supply water for both livestock and people. The lack of baseline data on reservoir operation hinders their optimal management. The objective of this study was to enhance the knowledge of water resources of the small reservoirs in order to improve their management in the context of multiple uses. This study was carried out on a small reservoir located in Southern Burkina Faso which was monitored for 2 years (from April 2012 to April 2014). A simple approach based on the mass conservation equation was developed for estimating reservoir fluxes. For a short hydrological monitoring period, the rainfall, evaporation and reservoir filling patterns revealed a different hydrological balance of the reservoir between these 2 years. A decrease of 32% in the annual rainfall leads to a 50% reduction in the annual runoff coefficient. The results showed that about 60% of water was lost by evaporation, whereas less than 20% of water caught in the reservoir was withdrawn for various uses. The available water resources in the studied system are largely sufficient to satisfy the current demands. There are still possibilities for developing uses of water storage and for enhancing the irrigation potential of the small reservoir. This analysis indicates that small reservoirs are underperforming. The results highlighted that estimating water fluxes in a reservoir is a central task to support water management authorities and stakeholders in operational strategies for water supply and irrigated agriculture.
4 Ekolu, J.; Dieppois, B.; Sidibe, M.; Eden, J. M.; Tramblay, Y.; Villarini, G.; Pena-Angulo, D.; Mahe, G.; Paturel, J.-E.; Onyutha, C.; van de Wiel, M. 2022. Long-term variability in hydrological droughts and floods in Sub-Saharan Africa: new perspectives from a 65-year daily streamflow dataset. Journal of Hydrology, 613(Part A):128359. [doi: https://doi.org/10.1016/j.jhydrol.2022.128359]
Drought ; Floods ; Hydrological factors ; Trends ; Intensity ; Frequency ; Stream flow ; Datasets ; River basins ; Catchment areas / Africa South of Sahara
(Location: IWMI HQ Call no: e-copy only Record No: H051399)
https://www.sciencedirect.com/science/article/pii/S0022169422009313/pdfft?md5=f530acde9af55347870e357f4c6c5391&pid=1-s2.0-S0022169422009313-main.pdf
https://vlibrary.iwmi.org/pdf/H051399.pdf
https://vlibrary.iwmi.org/pdf/H051399.pdf
(13.30 MB) (13.3 MB)
Understanding hydrological variability is of crucial importance for water resource management in sub-Saharan Africa (SSA). While existing studies typically focus on individual river basins, and suffer from incomplete records, this study provides a new perspective of trends and variability in hydrological flood and drought characteristics (frequency, duration, and intensity) across the entire SSA. This is achieved by: i) creating a 65-year long, complete daily streamflow dataset consisting of over 600 gauging stations; ii) quantifying changes in flood and drought characteristics between 1950 and 2014; iii) evaluating how decadal variability influences historical trends. Results of daily streamflow reconstructions using random forests provide satisfactory performance over most of SSA, except for parts of southern Africa. Using change-point and trend analyses, we identify-three periods that characterise historical variations affecting hydrological extremes in western and central Africa, and some parts of southern Africa: i) the 1950s–60s and after the 1980s–90s, when floods (droughts) tend to be more (less) intense, more (less) frequent and more (less) persistent; and ii) the 1970s–80s, when floods (droughts) are less (more) intense, less (more) frequent and less (more) persistent. Finally, we reveal significant decadal variations in all flood and drought characteristics, which explain aperiodic increasing and decreasing trends. This stresses the importance of considering multiple time-periods when analysing recent trends, as previous assessments may have been unrepresentative of long-term changes.
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