Some experiments on the local scour of bed in front of the wall by jet flow were carried out in a laboratory flume as a simplified model for the one in front of the revetment in bars bed channel. Experimental results revealed some of its fundamental characteristics, and a model based on these which can predict the local scour depth and its position in front of the revetment was developed. Inspite of bold simplifications and expansions, the results were practically satisfied.
