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Hydrological bulletins
June 2020 Monthly Bulletin PDF Print E-mail
Wednesday, 22 July 2020 10:58

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

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Annual hydrological report of the Niger Basin year 2019/2020 PDF Print E-mail
Monday, 06 July 2020 19:34

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.

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May 2020 Monthly Bulletin PDF Print E-mail
Tuesday, 16 June 2020 15:03

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)

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April 2020 Monthly Bulletin PDF Print E-mail
Friday, 15 May 2020 16:12

Hydrological flow situation in the Niger basin during the month of April was characterized by a continue low flow in the Inland Delta and the Middle Niger. Furthermore, dry flow situation continues at the Upper and the Lower Niger.
Releases of water reservoir from Selingué Dam in Mali and Kainji Dam in Nigeria continues.
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)

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March 2020 Monthly Bulletin PDF Print E-mail
Wednesday, 06 May 2020 17:14

Hydrological flow situation in the Niger basin during the month of March was characterized by a continued low flow in the Inland Delta and the Midlle Niger. Furthermore, dry flow situation continues at the Upper and the Lower Niger.
Releases of water reservoir from Selingué Dam in Mali and Kainji Dam in Nigeria continues.
The data used for the various analyses below came from Hydrological observation networks of the National Hydrological Services and Dam Authorities of 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)

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February 2020 Monthly Bulletin PDF Print E-mail
Thursday, 19 March 2020 14:00

Hydrological flow situation in the Niger basin during the month of February was characterized by a continued decrease flow in the basin. Furthermore, dry flow situation was observed at the Upper and the Lower Niger.
Releases of water from Selingué Dam in Mali as well as Kainji Dam in Nigeria continue.
The data used for the various analyses below came from the National Hydrological Services and Dam Authorities of 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)

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