Fowe T. auteur aut IRD Nouiri I. auteur aut IRD Ibrahim B. auteur aut IRD Karambiri H. auteur aut IRD Paturel Jean-Emmanuel auteur aut IRD text journalArticle eng text/pdf born digital access An approach based on a real coded Genetic Algorithm (GA) model was used to optimize water allocation from a coupled reservoir-groundwater system. The GA model considered five objectives: satisfying irrigation water demand, safeguarding water storage for the environment and fisheries, maximizing crop water productivity, protecting the downstream ecosystem against elevated soil salinity and hydromorphic issues, and reducing the unit cost of water. The model constraints are based on hydraulic and storage continuity requirements. The objectives and constraints were combined into a fitness function using a weighting factor and the penalty approaches. The decision variable was water allocation for irrigation demand from reservoir and groundwater. The irrigation water demands around the reservoir were estimated using the Food and Agriculture Organization (FAO) Penman-Monteith method in the water evaluation and planning (WEAP) software. The deterministic GA model was coded using Visual Basic 6 and a new tool for irrigation water management optimization (OPTIWAM) was developed. To validate the applicability of the deterministic model for the operation of coupled reservoir-groundwater systems, the Boura reservoir (in the center-west region of Burkina Faso) and the downstream irrigation area were used as a case study. Results show that the proposed methodology and the developed tool are effective and useful for determining optimal allocation of irrigation water. Furthermore, the methodology and tool can improve water resources management of coupled reservoir-groundwater systems. specialized Irrigation Water resources Allocation Optimization Genetic algorithms 062 020 29 10 3841-3861 2015 0920-4741 https://www.documentation.ird.fr/hor/fdi:010064774 10.1007/s11269-015-1032-9 0920-4741 [F B010064774] https://www.documentation.ird.fr/hor/fdi:010064774 https://www.documentation.ird.fr/intranet/publi/2015/07/010064774.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2015-07-29 2017-08-23 fdi:010064774 fre