A HYDROLOGICAL STUDY OF THE SOUTHERN SUDD REGION OF THE UPPER NILE

Abstract

The Nile flood-plain at the southern margin of the Sudd region provides a series of basins which act as reservoirs. An analysis of flow records allows the storage volume in a sample reach to be related to the river inflow. The vegetation distribution on the flood-plain is controlled by seasonal flooding, and the form of control is deduced by relating this distribution to elevation and thus to hydrological conditions. The variations in the local economy are in turn related to river regime.