Within the framework of European Community MAST (Marine Science and Technology) Program as a postdoctorate fellow under the guidance of Prof. Dr. Jurjen A. Battjes at Delft University of Technology between late 1990 and early 1992 I did a series of experiments. Experiments were about the measurements of nonlinear waves passing over a submerged bar. Measurements were done in two separate groups. The first group contained relatively lower sampling rate (10.0035 Hz or 0.0999648 second) records at eight stations, which essentially aimed at clarifying the effects of wave breaking. These measurements were reported in the paper Beji Battjes Coastal Eng 93 in Coastal Engineering in 1993. The second group of measurements was also done for eight stations but for a higher sampling rate (25.4375 Hz or 0.039312 second). The second group of measurements was planned for the use of testing numerical model simulations. Out of eight measurement stations the first one recorded the wave board movement. Numerical simulations performed by using the wave board movement as input and comparisons with experimental measurements at remaning stations were given in Ohyama Beji Nadaoka Battjes J Waterway Port Coastal Ocean Eng 94 in J. Waterway, Port, Coastal, and Ocean Engineering, 1994. Again using the second group of measurements comparisons with simulations of an improved Boussinesq model were presented in Beji Battjes Coastal Eng 94 in Coastal Engineering, 1994. But in this latter work only seven stations were used as the Boussinesq model did not use the wave board movement as input. Out of seven stations the first one, Station 1, is used as input to the numerical model. At remaining six stations, numerical simulations and experimental measurements were compared. In the course of the years following the measurements, the data was re-recorded many times in various formats and as a result the records containing the wave board movement, which were taken separately from the rest, became corrupt. At present the second group of measurements contains only seven stations.