Nigeria: Soil and Water Resources Survey of the Sokoto Valley, final report. Vol 4, climate and hydrology. Part 1, text

abastecimiento de agua almacenamiento de agua approvisionnement en eau bassin versant bilan hydrique calidad del agua clima climat climate drainage systems eau de ruissellement eau souterraine erosion evapotranspiration flooding floodplains groundwater hidrologia humedad humidity hydrologie hydrology inondation llanura aluvial meteorologia meteorologie meteorology plaine d'inondation precipitation red de drenaje runoff water sediment sedimentation sedimento stockage d'eau water balance water quality water storage water supply watersheds