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Hydrological bulletins
January 2024 Monthly Bulletin PDF Print E-mail
Tuesday, 20 February 2024 09:39

The hydrological situation in the Niger basin during the month of January was characterized by a continued decline in flows across the entire basin. In addition, a situation of low water has commenced at both the Upper Niger and Lower Niger sub-basins. The peak of the Guinean flood was recorded at the Niamey station during this month.
The Selingué dams in Mali and Kainji in Nigeria have begun gradual releases to support downstream flows.
The data used for the various analyses below came from hydrological observation networks of the National Hydrological Services and Dam Authorities of nine (9) member countries of Niger Basin Authority. (NBA)
The flow analysis situation was carried out by dividing the basin into three (4) sub-catchments also represented with reference gauging stations as follows: Upper Niger at Koulikoro (Mali), Inland Delta at Dire (Mali), Middle Niger at Niamey (Niger) and Lower Niger at Lokoja (Nigeria)

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December 2023 Monthly Bulletin PDF Print E-mail
Tuesday, 20 February 2024 09:28

During the month of December, the decrease in flows continued at the level of the Upper Niger, Inner Delta and Lower Niger sub-basins. On the other hand, in the sub-basin of the Middle Niger, there is a rise in water levels due to the influence of the Guinean flood.
The Selingué dams in Mali and Kainji in Nigeria have begun gradual releases to support downstream flows.
The data used for the various analyses below came from hydrological observation networks of the National Hydrological Services and Dam Authorities of nine (9) member countries of Niger Basin Authority. (NBA)
The flow analysis situation was carried out by dividing the basin into three (4) sub-catchments also represented with reference gauging stations as follows: Upper Niger at Koulikoro (Mali), Inland Delta at Dire (Mali), Middle Niger at Niamey (Niger) and Lower Niger at Lokoja (Nigeria)

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November 2023 Monthly Bulletin PDF Print E-mail
Tuesday, 20 February 2024 09:21

During the month of November, the flow of River Niger was characterized by a low flow situation at the Upper Niger and the Lower Niger. Whereas, at the Inner Delta at Dire and downstream up to Kainji Dam in Nigeria, the water level is continuously rising because of the influence of Black flood.
The filling of the Selingué reservoir in Mali and the Kainji reservoir in Nigeria were still both at normal water level situation.
The data used for the various analyses below came from hydrological observation networks of the National Hydrological Services and Dam Authorities of nine (9) member countries of Niger Basin Authority. (NBA)
The flow analysis situation was carried out by dividing the basin into three (4) sub-catchments also represented with reference gauging stations as follows: Upper Niger at Koulikoro (Mali), Inland Delta at Dire (Mali), Middle Niger at Niamey (Niger) and Lower Niger at Lokoja (Nigeria)

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October 2023 Monthly Bulletin PDF Print E-mail
Tuesday, 20 February 2024 09:17

The month of October was characterized by the beginning of a decline in flow situation at the Upper Niger and the Lower Niger Sub- Basins.  While the Inner Delta and the Middle Niger Sub – Basins witnessed increasing flow due to the incoming Guinean black flood.
The filling of the Selingué reservoir in Mali and the Kainji reservoir in Nigeria is in progress and has both reached normal reservoir capacity level.
The data used for the various analyses below came from hydrological observation networks of the National Hydrological Services and Dam Authorities of nine (9) member countries of Niger Basin Authority. (NBA)
The flow analysis situation was carried out by dividing the basin into three (4) sub-catchments also represented with reference gauging stations as follows: Upper Niger at Koulikoro (Mali), Inland Delta at Dire (Mali), Middle Niger at Niamey (Niger) and Lower Niger at Lokoja (Nigeria)

Download the October 2023 Monthly Bulletin

 
September 2023 Monthly Bulletin PDF Print E-mail
Thursday, 02 November 2023 07:16

The hydrological situation during the month of September 2023 was characterized by the continued rise in water levels throughout the Niger River basin with the recording of some significant floods in certain parts of the basin with victims.
During September, the Guinean flood from the upper basin progressed from upstream to downstream.
The filling of the Selingué reservoir in Mali and the Kainji reservoir in Nigeria is in gradual continuation.
The data used for the various analyses below came from hydrological observation networks of the National Hydrological Services and Dam Authorities of nine (9) member countries of Niger Basin Authority. (NBA)
The flow analysis situation was carried out by dividing the basin into three (4) sub-catchments also represented with reference gauging stations as follows: Upper Niger at Koulikoro (Mali), Inland Delta at Dire (Mali), Middle Niger at Niamey (Niger) and Lower Niger at Lokoja (Nigeria)

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Bulletin Mensuel d’août 2023 PDF Print E-mail
Tuesday, 03 October 2023 12:41
There are no translations available.

La montée des eaux s’est poursuivie durant ce mois d’août dans tous les compartiments du bassin du Niger avec quelques situations d'inondations dans le Niger inferieur.
Le remplissage du réservoir de Selingué au Mali et du réservoir de Kainji au Nigeria se poursuit progressivement.
Les données utilisées pour les différentes analyses ci-dessous proviennent des réseaux d’observations hydrométriques des Services Hydrologiques Nationaux et des Agences de barrages des neuf (9) pays membres de l’Autorité du Bassin du Niger (ABN).
L’analyse des écoulements dans le bassin du Niger est faite aux stations hydrométriques de référence, à savoir Koulikoro (Mali) pour le Niger Supérieur, Diré (Mali) pour le Delta Intérieur, Niamey (Niger) pour le Niger Moyen et Lokoja (Nigeria) pour le Niger Inférieur

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Bilan hydrologique 2022-2023 du Bassin du Niger PDF Print E-mail
Thursday, 14 September 2023 08:05
There are no translations available.

Le Fleuve Niger prend sa source dans les plateaux du Massif du Fouta-Djalon à plus de 1 000 m d'altitude en Guinée et traverse successivement le Mali, le Niger, le Bénin et le Nigeria où il se jette dans l’Océan Atlantique après un parcours d’environ 4 200 km. C’est le troisième plus long fleuve d’Afrique (après le Nil et le Congo), le 14ème du monde et le 9ème par son bassin de drainage (2 170 500 km2). Son bassin versant actif couvre une superficie d’environ 1 500 000 km2 que se partagent les neuf (9) pays regroupés au sein de l’Autorité du Bassin du Niger : le Bénin (2%), le Burkina Faso (4%), le Cameroun (4%), la Côte d’Ivoire (1%), la Guinée (6%), le Mali (26%), le Niger (23%), le Nigeria (33%) et le Tchad (1%). La Bénoué qui prend sa source au Cameroun, reçoit les apports de la rivière Mayo Kebbi du Tchad, avant de rejoindre le cours principal du Fleuve Niger à la confluence de Lokoja au Nigeria, est son affluent le plus important.
L’année hydrologique du fleuve Niger va du 1er juin d’une année au 31 mai de l’année suivante.
En raison des différences entre les caractéristiques physiographiques et climatiques, le bassin du fleuve Niger est subdivisé en 4 sous-bassins : le Niger Supérieur, le Delta Intérieur, le Niger Moyen et le Niger Inférieur. Ce bilan annuel du fleuve Niger pour l’année hydrologique 2022/2023 fait l’analyse de la situation des écoulements aux stations représentatives des différents sous bassins : Koulikoro (Mali) pour le Niger Supérieur, Diré (Mali) pour le Delta Intérieur ; Niamey (Niger) pour le Niger Moyen et Lokoja (Nigeria) pour le Niger Inférieur (Voir Fig.1.a)
Le suivi des écoulements au cours de l’année hydrologique 2022/2023 a été assuré dans le cadre des activités de l’Observatoire du Bassin du Niger à partir d’une centaine de stations hydrométriques issues des réseaux d’observations hydrologiques des Services Hydrologiques Nationaux et des Agences de barrages des pays membres de l’ABN. Ces stations sont équipées de plates-formes de collecte de données (PCD) de type Satlink, des Liminigraphes électroniques avec ou sans transmission GSM, ou de simples échelles limnimétriques avec un agent observateur qui assure les lectures quotidiennes.

Télécharger le bilan hydrologique 2022-2023 du Bassin du Niger

 
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