Changes of the hydrodynamic conditions in the braided river

Abstract

The paper focuses on the understanding of the basic hydrodynamic conditions along the braided gravel-bed river. The  measuring cross-section was located in the Ochotnica River, where its braided channel development was observed. Investigations take place from 2003 up to 2014. Measurements were performed for selected characteristic points. The study focused mostly on the measurements of water velocities under different flow conditions, and next on  finding  basic hydraulic  parameters  of flow: shear velocity, shear stresses, Reynolds number, Froude number. In addition, the gravel material from the river bed was examined, in order to find sedimentological characteristics of it.