Horizon 1 1 17 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES Groundwater : our source of security in an uncertain future Water SA International Conference on Groundwater 399-405 groundwater irrigation water balance over-exploitation Sub-Saharan Africa 2012 2011/09/19-21 PAR00009111 ENG Water SA 0378-4738 ISI:000306368800006 3 spécial 10.4314/wsa.v38i3.5 https://www.documentation.ird.fr/hor/PAR00009111 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers21-03/010081607.pdf 38 Horizon (IRD) 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. 062 UR050 Laos / Sri Lanka / Afrique du Sud