The month of October marks the end of the rainy season and the beginning of the Guinean flood in the sub-basins of the Inner Delta at Diré station (Mali) and the Middle Niger at Niamey station (Niger).  This flood has not yet reached its maximum in the Inner Delta while at the level of the sub-basins of the Upper Niger in Koulikoro (Mali) and the Lower Niger in Lokoja (Nigeria), the decline in flow has started since the end of the month of September 2024.
The filling of the Selingué reservoir in Mali and the Kainji reservoir in Nigeria has both reached maximum reservoir capacity level in October.
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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