Knowledge of pressure fluctuations on the bed of the stilling basins caused by the hydraulic jump due to the potential severe damages during the operation of these structures is essential. In this book, it has been mainly focused on dimensionless pressure parameters in free hydraulic jumps. Pressure points were located downstream of an Ogee spillway along the centerline on the bed of a USBR Type I stilling basin with a smooth bed. This research was conducted in a laboratory flume with different flow discharge. The pressure data of the points on the basin's bed were collected using the...