Mason Dam Flow Deflectors for Preventing Abrasion Damage

A physical model study was conducted to evaluate the hydraulic characteristics of the Mason Dam river outlet works stilling basin and to design a flow deflector for the purpose of mitigating basin abrasion damage. In addition, the first prototype flow deflector design was implemented at Mason Dam in October 2002 to provide a field demonstration of this technology. Field monitoring, including dive inspections and velocity profile measurements, were included in this study to verify the effectiveness of the deflector and to refine the final design.