Niger River Basin Soil Moisture for January 1985 - 1999

The geology and soil type of the Niger basin heavily influence the groundwater storage in the area. Groundwater is an important source for baseline river flow and provides access to water during periods of drought. Soil moisture is dependent on the rainfall occurring and water retained in the river channels. For this reason soil moisture tends to peak in the period following high rainfall or runoff. Consequently higher soil moisture occurs in the period June to October when rainfall tends to occur. The basin is generally divided into 3 sections (upper, middle, lower) each section experiences differences in the timing of water availability for example rains start earlier in the south.

Soil moisture legend as percentages

Soil moisture legend as percentages

Other Niger Maps

Niger Land Maps