Bader Jean-Claude auteur aut IRD Albergel Jean auteur aut IRD text report Litérature grise eng text/pdf reformatted digital access Formed on the upper basin by the annual monsoon, the flood of Senegal River inundates a vast floodplain on its lower course, called "the valley". This one, several hundred kilometres long, can be regarded as an inland delta. This annual flooding, which offers ecosystem services and promotes traditional activities, must be maintained despite the presence on the Bafing of the Manantali reservoir dam, which controls since 1987 half of the river flows through the valley. In addition to its other objectives (energy production, low water support for irrigation and navigation, mitigation of too high floods), this dam therefore achieves a flood support, designed to maintain adequate flood in the valley. Here we present a decision support system dedicated to flood support that aims to: 1) define a flood hydrograph goal for Senegal river, according to a target area of recession crops; 2) define the optimal date for flood support, in order to penalize the least possible energy production at the dam; 3) calculate the discharges to release of the dam to support the flood, according to the real-time hydrological situation known. We finally analyse the respective impacts of natural climate hazard and of Manantali dam on the river's flood observed. specialized AMENAGEMENT HYDRAULIQUE BARRAGE GESTION BESOIN EN EAU SURVEILLANCE PLAINE INONDABLE SAISON HUMIDE CULTURE DE DECRUE AGRICULTURE TRADITIONNELLE CRUE INONDATION PROTECTION DE L'ECOSYSTEME RESSOURCES NATURELLES CONSERVATION DE LA NATURE ENERGIE HYDRAULIQUE STATION HYDROLOGIQUE BASE DE DONNEES AIDE A LA DECISION METHODOLOGIE COURS D'EAU 1946 2000 CRUE ARTIFICIELLE MOUSSON DELTA INTERIEUR HYDROGRAMME AFRIQUE DE L'OUEST GUINEE MALI MAURITANIE SENEGAL 062EVAEAU03 Montpellier IRD 2015 23 multigr. 23 multigr. 23 multigr. https://www.documentation.ird.fr/hor/fdi:010065107 [F B010065107] https://www.documentation.ird.fr/hor/fdi:010065107 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers15-07/010065107.pdf IRD - Base Horizon / Pleins textes 2015-07-28 2016-01-18 fdi:010065107 fre