| Summary: | It is noticed that from 1954 to 1984; the curve of water flow height is below that of discharge but there was no flooding. By cons, from 1985 to 2013,
this curve is above that of water levels and floods are recorded in this period. It is concluded that of the 60 years, there has been a decrease in river flows and increase in the corresponding water levels.
Flooding events recorded during last decades in Malaville and Karimama districts could be explained by a combination of different natural and man-made factors in Niger River watershed and in Malaville and Karimama districts
Population growth has caused an expansion of cultivated areas, denudation of the banks with the resultant heavy erosion and filling of the main river bottom.
The consequences of the reduction in the duration of the rainy season without a significant reduction in rainfall totals were amplified by anthropogenic forcing.
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