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Thursday, 22 August 2024 12:50 |
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The Niger River takes its source in the plateaus of the Fouta-Djallon at an altitude of more than 1,000 m in Guinea and successively crosses Mali, Niger, Benin and Nigeria where it flows into the Atlantic Ocean after a journey of approximately 4,200 km. It is the third longest river in Africa (after the Nile and the Congo), the 14th in the world and the 9th in terms of its drainage basin (2,170,500 km 2). Its watershed active covers an area of approximately 1,500,000 km 2 shared by the nine (9) countries grouped within the Niger Basin Authority: Benin (2%), Burkina Faso (4%), Cameroon (4%), Côte d’Ivoire (1%), Guinea (6%), Mali (26%), Niger (23%), Nigeria (33%) and Chad (1%). The Benue which has its source in Cameroon, receives contributions from the Mayo Kebbi River from Chad, before joining the main course of the Niger River at the confluence of Lokoja in Nigeria, is its most important tributary.
The hydrological year of the Niger River goes from June 1st of a year to May 31st of the following year.
Due to differences between physiographic and climatic characteristics, the Niger River basin is subdivided into 4 sub-basins: The Upper Niger, the Inner Delta, the Middle Niger and the Lower Niger. This annual report of the Niger River for the hydrological year 2023/2024 analyzes the flow situation at stations representative of the different sub-basins: Koulikoro (Mali) for the Upper Niger, Diré (Mali) for the Inner Delta; Niamey (Niger) for Middle Niger and Lokoja (Nigeria) for Lower Niger
The flow monitoring during the hydrological year 2023/2024 was carried out as part of the activities of the Niger Basin Observatory from a hundred hydrometric stations in the hydrological observation networks of the National Hydrological Services and Dam Agencies of NBA member countries. These stations are equipped with Satlink type data collection platforms (PCD), electronic liminigraphs with or without GSM transmission, or simple limnimetric scales with an observer agent who ensures daily readings.
Generally speaking, the hydrological year 2023/2024 was characterized by flows lower than the inter-annual average values in the Upper Niger and the Inner Delta respectively. On the other hand, the flows in the Middle Niger and the Lower Niger were all higher than the inter-annual average values respectively.
As for the water levels of the Sélingué and Kainji dams during the hydrological year 2023/2024, they reached their normal level of 349.00 m on October 15th, 2023 and 141.73 m on October 15th, 2023 respectively. Also throughout the year, these hydraulic structures supported low water levels downstream in order to meet the different needs of users.
Download the 2023-2024 hydrological balance of the Niger Basin
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Wednesday, 21 August 2024 15:50 |
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 The month of June marks the beginning of another hydrological year in the Niger Basin. Some rainfall was recorded in parts of the Basin resulting in the end of low water and the beginning of a gradual increase in flows throughout the basin.
The Sélingué water reservoir in Mali and Kainji water reservoir in Nigeria continue to release water to support the downstream flow.
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 June 2024 Monthly Bulletin
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Wednesday, 21 August 2024 15:42 |
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 The month of May marks the end of the hydrological year in the Basin. The hydrological situation of the Niger Basin during the month was characterized by the continuation of the low water situation throughout the Basin. However, localized rainfall was recorded in some compartments of the Basin, particularly in the Upper Niger and Lower Niger.
The Sélingué water reservoir in Mali and Kainji water reservoir in Nigeria continue to release water to support the flow situation in the basin.
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 May 2024 Monthly Bulletin
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Wednesday, 21 August 2024 15:36 |
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 The hydrological situation in the Niger basin during the month of April was characterized by low flows at the Inner Delta and Middle Niger sub-basins. On the other hand, there is increasing flow at Upper and Lower Niger sub-basins due to the onset of rainfall in these parts of the basins.
The Sélingué water reservoir in Mali and Kainji water reservoir in Nigeria continue to release water to support the low flow situation in the basin.
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 April 2024 Monthly Bulletin
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Tuesday, 11 June 2024 17:35 |
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The hydrological situation in the Niger basin during the month of March was characterized by decline of flow at the Inland Delta and the Middle Niger. While a low flow situation is observed at the Upper Niger and the Lower Niger.
The Sélingué water reservoir in Mali and Kainji water reservoir in Nigeria continue to release water to support the low flow situation in the basin.
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 March 2024 Monthly Bulletin
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Wednesday, 27 March 2024 07:47 |
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 The hydrological situation in the Niger basin during the month of February was characterized by a continued decline in flows across the entire basin except the Lower Niger sub- basin.
The Selingué dam in Mali has begun gradual release to support downstream flow.
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 February 2024 Monthly Bulletin
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Tuesday, 20 February 2024 09:39 |
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 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)
Download the January 2024 Monthly Bulletin
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