MORPHOLOGICAL ANALYSIS FOR MANAGEMENT OF BOULDER BED STREAM A CASE - STUDY FOR BARANADI RIVER

Abstract

The gravel/boulder bed rivers are different from those of sand bed rivers in many aspects such as (i) resistance to flow (ii) sediment transport (iii) unpredictable geological features as usually encountered in river bed and sides. Thus gravel bed river flow possesses complex mechanism thereby, making prediction of river behavior in such river very difficult. The gravel bed rivers are generally encountered in mountainous regions. They are characterized by flashy floods with tremendous velocity. The gravel bed river carries heavy and episodic bed load containing gravels, cobbles and boulders. The problems in the gravel bed river are generally accompanied by bank erosion and some times over topping of bank. In this dissertation, a study was undertaken among other things, river morphology through application of extremal hypotheses for river equilibrium conditions. Problems of bank erosion and approach to secure the most suitable and practicable solution was investigated....