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August 2020 Monthly Bulletin |
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Tuesday, 29 September 2020 08:07 |
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The month of August was characterized by continued rise in flow throughout the entire Niger basin. During the middle of August 2020, the flow at Middle Niger recorded an exceptional local flood resulting from heavy rainfall and inflows from the main tributaries of the right bank river Niger (Gorouol, Dargol, Sirba, Diamangou, MĂ©krou, Alibori and Sota).
At the level of the structuring dams of Sélingué in Mali and Kainji in Nigeria, the filling of reservoirs has started because of the contribution from rainfall seasons.
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.
The flow analysis situation was carried out by dividing the basin into four (4) sub-catchments also represented with reference gauging stations as follows: Upper Niger at Koulikoro (Mali), Inland Delta at Dire (Mali), Middle Niger in Niamey (Niger) and Lower Niger at Lokoja (Nigeria)
Download the August 2020 Monthly Bulletin |
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June 2020 Monthly Bulletin |
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Wednesday, 22 July 2020 10:58 |
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The month of June marks the commencement of the hydrological year in the Niger Basin. The precipitation recorded in all the River Niger Catchments occurs a rise in flow which is characterized by flash floods, at the rate of local rainfall. The average monthly flow recorded show an increasing flow from upstream to downstream. The discharging of water reservoirs from structural dams continues 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.
The flow analysis situation was carried out by dividing the basin into four sub-catchments also represented with reference gauging stations as follows: Upper Niger at Koulikoro (Mali), Inland Delta at Dire (Mali), Middle Niger in Niamey (Niger) and Lower Niger at Lokoja (Nigeria
Download the June 2020 Monthly Bulletin |
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Annual hydrological report of the Niger Basin year 2019/2020 |
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Monday, 06 July 2020 19:34 |
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The Niger River has its source from the Fouta-Djalon Plateau more than 1000m altitude in Guinea and successively flows through Mali, Niger, Benin and Nigeria where it empties into the Atlantic Ocean after a span of around 4200 km. It is the third longest river in Africa (after the Nile and the Congo), the 14th in the world and the 9th by its drainage basin (2,170,500 km2). The active watershed covers an area of approximately 1,500,000 km2 shared by the nine (9) countries within the Niger Basin Authority catchments: Benin (2%), Burkina Faso (4%), Cameroon (4%), CĂ´te d'Ivoire (1%), Guinea (6%), Mali (26%), Niger (23%), Nigeria (33%) and Chad (1%). The River Benue which rises from Adamawa Plateau, Cameroon, to join the main course of River Niger at Lokoja in Nigeria, this is one of its most important tributaries.
The hydrological year of the River Niger starts from June 1st of a year to May 31st of the following year. The annual assessment of the River Niger flow in hydrological year 2019/2020 analyzes the flow situation at designated stations of the different sub-basins: Koulikoro (Mali) for Upper Niger, Diré (Mali) for the Inner Delta; Niamey (Niger) for Middle Niger and Lokoja (Nigeria) for Lower Niger.
The monitoring of River Niger flow during the hydrological year 2019/2020 was carried out under the framework of the activities of the Niger Basin Observatory from 113 hydrometric stations belonging to the hydrological observation networks of National Hydrological Services (NHS) of NBA’s nine (9) member countries. These stations were equipped with gauge scales, some of which are associated with Satlink-type data collection platforms (PCD) (data transmission by satellite) or electronic Liminigraphs (transmission by GSM). All these hydrometric stations have an gauge reader who takes reading on a daily basis and monitors the equipment.
The databases of the NHSs and the Executive Secretariat of the NBA are managed by HYDROMET software to facilitate the exchange of data. The data received were duly analyzed and stored in the hydrometric database of the NBA Executive Secretariat.
Download the Annual hydrological report |
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May 2020 Monthly Bulletin |
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Tuesday, 16 June 2020 15:03 |
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The 2019/2020 hydrological year which started in June 2019 in the Niger River Basin ended in this month of May 2020 with the low flow water observed over the entire Niger River basin. The flows were supported by the releases from the Sélingué dams in Mali and Kainji dams in Nigeria, the base flow and gradual onset of rainy season.
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.
The flow analysis situation was carried out by dividing the basin into four sub-catchments also represented with reference gauging stations as follows: Upper Niger at Koulikoro (Mali), Inland Delta at Dire (Mali), Middle Niger in Niamey (Niger) and Lower Niger at Lokoja (Nigeria)
Download the May 2020 Monthy Bulletin |
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