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)

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