ABSTRACT
The major changes of course illustrate the major shifts that can occur and the diversion to the south-east was deliberately effected during war time conditions. Processes in river channels have been modified directly and indirectly as a result of human influence. Direct modifications involve those cases where the river channel is modified in some way and Mrowka cited dam and reservoir construction, channelization, bank manipulation and levee construction, and irrigation diversions as examples of direct channel manipulation. A variety of land-use effects are known to have occasioned changes in discharge in sediment hydrographs and in bedload transport and these changes either involve an increase or a decrease in the activity of river channel processes. Land-use changes can be responsible for adjustments of river channel processes which affect channel landforms. Where the temporal sequence of water flow and sediment transported by rivers is altered, then changes in the processes operating within the river channel should occur as a direct consequence.
