• Decrease font size
  • Default font           size
  • Increase font size
Hydrological bulletins
July 2021 Monthly Bulletin PDF Print E-mail
Monday, 23 August 2021 19:21

In July, precipitation is installed on all compartments of the Niger Basin, with runoff coefficients higher than in June, at the beginning of the rainy season, due to the gradual saturation of soils. The flood in June is then replaced by a steady flow increase across the entire Niger Basin.
The reservoir filling of Sélingué Dam in Mali and Kainji Dam in Nigeria has started respectively during the second and the third decade.
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 July 2021 Monthly Bulletin

 
2020-2021 Hydrological situation PDF Print E-mail
Sunday, 08 August 2021 08:35

The hydrological year at Upper Niger compartment of the Basin was slightly deficient, high at the Inner Delta, very high at the Middle Niger and moderately high at the Lower Niger.
The average flow situation observed at the Inner Niger Delta was due to the inflows from the Bani tributary from CĂ´te d'Ivoire and Mali.
In the Middle Niger, flows from the tributaries of the right bank Dargol, Gourouol,Sirba and Goroubi rivers from Burkina Faso significantly contributed to the wet hydraulicity in this sub-basin of the Niger River.
The Lower Niger experienced a surplus hydrological year due to inflows from left bank tributaries especially the principal River Benue which originates from Cameroon.
The water levels at Selingué dam in Mali and Kainji dam in Nigeria have all reached their full normal reservoir levels respectively and have contributed to support low flow situation downstream.
In summary, the 2020/2021 hydrological year was characterized by some excessive flows causing flooding in the Middle and Lower Niger of the Niger Basin with heights that has never been recorded for more than 100 years. These floods caused loss of lives, properties and thousands of people were made homeless.
The ABN through its Niger Basin Observatory should be more supported in order to provide appropriate and timely information on the hydrological situation of the Niger Basin.

Download the 2020-2021 Hydrological situation

Read more...
 
June 2021 Monthly Bulletin PDF Print E-mail
Saturday, 31 July 2021 09:58

The month of June marks the starting of hydrological year in the Niger Basin. The commencement of the rainy season was timid, especially during the first decade of June, but the situation improved during the last decade of the month with a rise in flows over the entire basin as a result of pearly floods, to the rhythm of local rainfalls recorded.
The releases of the Sélingué Dam in Mali and Kainji Dam in Nigeria continues to support low flow at the upper Niger and Lower Niger.
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 June 2021 Monthly Bulletin

 
May 2021 Monthly Bulletin PDF Print E-mail
Friday, 11 June 2021 17:25

The month of May marks the end of hydrological year 2020/2021.
The flows continued to decrease over the entire basin, despite some localized rainfall which were recorded in certain compartments of the basin, notably in the Upper Niger and the Lower Niger.
The releases of the Sélingué dam in Mali and Kainji dam in Nigeria continues respectively.
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 May 2021 Monthly Bulletin

 
April 2020 Monthly Bulletin PDF Print E-mail
Tuesday, 18 May 2021 09:25

The hydrological flow situation in the Niger basin during the month of April 2021 was characterized by a continuation of low flow situation in the entire basin catchment area as result of the dry season and decreasing outflow. However, there are some localized rainfall recorded in some parts of the basin in the Upper and Lower Niger sub-basins.
The releases of the Sélingué dam in Mali and Kainji dam in Nigeria continues respectively.
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 Bulletin Mensuel d’avril 2021


 
March 2021 Monthly Bulletin PDF Print E-mail
Thursday, 22 April 2021 10:51

The hydrological flow situation in the Niger basin during the month of March 2021 was characterized by a continuation of low flows in the entire basin catchment area. The releases of the Sélingué dam in Mali and Kainji dam in Nigeria continues respectively. 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) subcatchments 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 thenMarch 2021 Monthly Bulletin


 
February 2021 Monthly Bulletin PDF Print E-mail
Saturday, 20 March 2021 10:47

The hydrological flow situation in the Niger basin during the month of February 2021 was characterized by a continuation of low flows in the entire basin catchment area. A recession situation has started in the sub-basins of the Inner Delta and the Middle Niger, whereas a low flow continues in the sub-basins of Upper Niger and Lower Niger.The releases of the Sélingué dam in Mali and Kainji dam in Nigeria continues respectively. 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) subcatchments 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 February 2021 Monthly Bulletin

 
<< Start < Prev 1 2 3 Next > End >>

Page 1 of 3