Unsteady flow temporal scour evolution in Type A Piano Key Weir

River flow characteristics are constantly changing in nature, and any structures built within river systems are subjected to a wide range of flow conditions. Alluvial riverbeds, in particular, experience both aggradation and degradation over time. Therefore, it is essential to investigate riverbed scour under variable flow conditions rather than assuming a constant, steady discharge.

This study examines the scouring behavior of an alluvial bed under varying discharges downstream of a Type-A Piano Key Weir. The following figures, videos, and tables present experimental results that support and illustrate the findings of this study.