Tamsir SOE-OMVS *
Observatoire de l’Environnement
International workshop on water allocation and Green growth
Wageningen – 22 & 23 nov. 2012
TAMSIR NDIAYE Director of Environment and Sustainable Development of the OMVS – DAKAR (SENEGAL) Tél: +221 77 450 05 20Email: [email protected] SOE-OMVS
Senegal River Basin Physical characteristics
*
Located in the western part of Africa between latitudes 10 °30 and 17°30 and longitudes 7 ° 30 'and 16 °30Area of about 345,000 km ² Drained by a river 1800 km longDivided into three main areas: upper Basin - Valley and DeltaFour riparian states (Mali, Mauritania, Senegal, Guinea).Source: Fouta Djallon (Guinea).
Senegal River Basin
*
OMVS (in 1972) - Objectives and Missions● Main objective: an integrated cooperation tool between riparian
states for coordinating the development of Senegal River basin « with everyone, for everyone »
● Main missions:
● Reduce riparian states economic vulnerability against hydrologic and climatic uncertainties and exogenous variables;
● Ensure conditions for food security for basin populations;
● Enhance economic development by fostering a solidarity use of basin opportunities;
● Preserve the overall balance of the senegal river hydrosystem;
● Secure and enhance incomes of basin populations.
*
● The Convention on the establishment of the OMVS of 11 March 1972 ;● The Convention on the Legal status of the River of 11 March 1972 ;
● The Agreement on the OMVS Privileges and Immunities of 18 April 1977;
● The Convention on the Legal Status of Jointly Owned Structures of 21 December 1978 ;
● The Convention on the financing modalities of the Joint Owned structures of 12 May 1982 ;
●The Convention on the establishment of the Société de Gestion et d’exploitation de Diama (Agency for the operational Management of the Diama Dam) - 07 January 1997 (SOGED) ;
● The Convention establishing the Société de Gestion de l’Energie de Manantali (Manantali Dam Operation and Management Agency - 07 January 1997 (SOGEM) ;
● The Charter of Waters of the Senegal River(28 May 2002) :
●Convention on the establishment of the Société de Navigation du fleuve Sénégal (SONASE) or the Inter-states Navigation Management and Operation Agency in 2005;
●The International Code of Navigation and Transport on the Senegal River in 2006.
Legal instruments
*
● Conference of Heads of State and of Government●Decision-making Body●Regular meetings every two years● Council of Ministers;● Policy and supervisory Body●Two regular meetings per year + special meetings● High-Commission;●Executive Body● SOGEM (OMVS’ asset holding Agency)●Management and operation of the hydropower system of Manantali●Control of the private Operator of Manantali hydropower Plant● SOGED (OMVS’ asset holding Agency)●Management and operation of the DIAMA Dam hydrosystem●Promoting navigation on the Senegal River;●SOGENAV
●Management of navigation on the Senegal River
OMVS Permanent Bodies :
*
●Permanent Water Commission;● Advisory body to the Council of Ministers● Meets every 3 months●Set guidelines for allocating the River water resources among use sectors ●Basin Committees●harmonization of planning projects and programs to be implemented in the Senegal River Basin● National Coordination Committees;● interface at national and regional levels● Local Coordination Committees. ●Interface at local and national/regional● Consultative Committee ;● formal annual meeting, but a permanent dialogue
OMVS Consultative Bodies
other tributaries
Bakoye
Bafing
Falémé
MANANTALI
Senegal River- Flow regime
GOUINAFELOU
GOURBASSI
*
OMVS first generation Regional Infrastructure(Common structures) :
Barrages de MANANTALI Barrage de DIAMA
*
●Block seawater intrusion;●Potable water supply to
populations year round (Agriculture, livestock,……);
●Irrigation Capacity of 120 000 ha;
●Improved filling conditions of lakes and depressions (wetlands);
●Regeneration of the vegetal cover and aquifers recharge;
●etc.
DIAMA Dam
*
●5 groups of 40 MW each;
●Intalled capacity of 200 MW;
●Generation of 800GWh / year, garanteed 9 years out of 10;
Hydro power Plant of Manantali
HC- OMVS - Séville, juin 2007 *
In terms of Telecommunication●The ground cable of the power transmission
lines, executed in fiber optics technology, allows for the interconnection of the Member States’ telecommunication networks and for the transit of 30200 simultaneous telephone communication links or of 48 TV channels.
HC- OMVS - Séville, juin 2007
HC- OMVS - Séville, juin 2007 *
Other Structures ancillary or auxiliary to Diama and Manantali Dams
●The Manantali and Diama reservoirs; ●Left and right bank dikes;●More than120.000 ha of irrigated
land ;●Water intake and /or filling structures;●Access roads to the dams●Road links between the basin areas
HC- OMVS - Séville, juin 2007
Issues on filling up the DAMS
Félou Dam under Construction – completion and production start-up in
the first quarter of 2013
Gouina Dam site - construction starts in 2013
HC- OMVS - Séville, juin 2007 *
OMVS Operational arrangements
Conference of Heads of State and of Government
Council of Ministers
SOGEDManagement of water at
DIAMA SOGEMElectricity Management
Of Manantali
High commissionof OMVS
ConsultativeOrgans
CPE
CRP
CC
National Coordination UnitsOf OMVS STATES
Advice
Policy Directives
LCC
HC- OMVS - Séville, juin 2007
*
Mechanism for processing the multiple uses of water resources’ demands in OMVS
Member States(Initiative)
COUNCIL OF MINISTERS(Decision)
HIGH-COMMISSION(Instruction)
Permanent Water Commission(CPE)(Advice)
*
Multiple Water uses in the Senegal River Basin
● Water consumption uses● Irrigation● Potable water supply● Hydropower generation● Artificial flood(flood recession cropping)● Instream flows(environmental flows,
fisheries, navigation)● Flood control(reservoir levels)
*
Water resources allocation process between the multiple uses by the Permanent water Commission
● Using management models:■ Ensure a balance between the resources available and the
users needs (Strategic Management)● Define the objectives for meeting the demands
■ Quantify the volume of different water consumption uses;■ Set priority levels for each demand,■ Takes into account other non consumptive water uses
(hydroelectricity, navigation, etc.), representing management constraints
● The fundamental issue involves trade-offs between uses
Define rules for demand management (releases vs. adjustment of uses) which allows for a control of the balance terms on the whole strategy.
*
Strategic operational management(1)computing a variable annual allocation for the coming
year (uncertain future) :
● Prudent management which involves adjustment of the annual allocation to various users between minimum allocation and maximum allocation: demand management by anticipation
● Anticipation based on storage forecasts, and the river flow system inflows),
● the allocation is calculated annually in June with the possibility of adjustment in November, March to take into account the actual amounts of inflows,
*
Strategic operational Management(2)During campaigns
1 - at the beginning of each water year (June) decision-making tool for the manager: a provisional allocation is calculated for each use between the minimum allocation and maximum allocation valid for the coming year,
2 – at each change of crop season (3 seasons), readjustment of allocations for the coming season:
3 - the actual observed hydrology (volume) is taken into account, possibility to refine forecasts, adjustment compared to actual consumption in a given range of variation
*
Strategic operational Management(3)
Results of the application of strategic management:● Allocations forecasts by use,● Manantali releases forecasts● Projected balance in reach with detailed sections● Hydrograph estimates at Bakel
*
Observatoire de l’Environnement de l’OMVS
Un outil stratégique de Veille pour le suivi de l’état de l’Environnement et des ressources naturelles du Bassin
*
Environmental Observation System of the Senegal River (SOE-FSEN)
Serveur Poste Client Logiciel SIG
Base de Données
SOE_OMVS
Calcul des Indicateurs
OmvsOptionsLocales
Traitement
Automatique
Omvs_RqOL_Map
Données PFNT
Par Pays
Traitement Automatique
Tamsir NdiayeTamsir Ndiaye
Tamsir SOE-OMVS *
Thank you for your Attention
Tamsir SOE-OMVS