Your search found 2 records
1 Pavelic, Paul; Smakhtin, Vladimir; Favreau, G.; Villholth, Karen G. 2012. Water-balance approach for assessing potential for smallholder groundwater irrigation in Sub-Saharan Africa. Water SA, 38(3): 399-406. (Special edition on International Conference on Groundwater). [doi: https://doi.org/10.4314/wsa.v38i3.5]
Water balance ; Groundwater irrigation ; Resource depletion ; Smallholders ; Farmer-led irrigation ; Case studies / Ghana / Burkina Faso / South-western Niger / Atankwidi River basin / Iullemmeden Basin
(Location: IWMI HQ Call no: e-copy only Record No: H044995)
(0.50 MB)
Strategies for increasing the development and use of groundwater for agriculture over much of Sub-Saharan Africa (SSA) are urgently needed. Expansion of small-scale groundwater irrigation offers an attractive option to smallholder farmers to overcome unreliable wet-season rainfall and enhance dry-season production. This paper presents a simple, generic groundwater-balance-based methodology that uses a set of type-curves to assist with decision making on the scope for developing sustainable groundwater irrigation supplies, and to help understand how cropping choices influence the potential areal extent of irrigation. Guidance to avoid over-exploitation of the resource is also provided. The methodology is applied to 2 sites in West Africa with contrasting climatic and subsurface conditions. At both sites the analysis reveals that there is significant potential for further groundwater development for irrigation whilst allowing provisions for other sectoral uses, including basic human needs and the environment.
2 Torou, Bio Mohamadou; Favreau, G.; Barbier, B.; Pavelic, Paul; Illou, Mahamadou; Sidibe, F. 2013. Constraints and opportunities for groundwater irrigation arising from hydrologic shifts in the Iullemmeden Basin, South-Western Niger. Water International, 38(4):465-479. (Special issue on "Sustainable groundwater development for improved livelihoods in Sub-Saharan Africa, Part 1" with contributions by IWMI authors). [doi: https://doi.org/ 10.1080/02508060.2013.817042]
Groundwater irrigation ; Small scale systems ; Irrigation systems ; Water management ; Water use ; Water level ; Water table ; River basins ; Farmers ; Land use ; Social aspects ; Food security ; Income ; Households ; Non governmental organizations / South-Western Niger / Kori de Dantiandou / Iullemmeden Basin
(Location: IWMI HQ Call no: PER Record No: H046065)
(2.74 MB)
Land-use-change-induced increases in shallow groundwater levels across parts of the Sahel in recent years have coincided with expanded use of groundwater for irrigation. This study was conducted to assess the potential linkages and livelihood implications based on a field survey of nine villages building on previous hydrological studies. The results show that irrigators lack effective means of production and mostly rely on manual methods. Borehole usage is more pro table and reliable than shallower wells. Overall incomes from irrigation are relatively small and severely constrained by the limited field scale due to high establishment and operating costs.
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