PREFACE 



This report was prepared by the US Army Engineer Waterways Experiment 

 Station (WES) Coastal Engineering Research Center (CERC) and is the result of 

 work performed under Coastal Research and Development Program Work Unit 31715, 

 "Laboratory Studies on Scour." This research was authorized and funded by 

 Headquarters , US Army Corps of Engineers (HQUSACE) , and was conducted by 

 Dr. Jimmy E. Fowler, Research Hydraulic Engineer, under the general 

 supervision of Dr. James R. Houston, Director of CERC; Mr. Charles C. Calhoun, 

 Assistant Director of CERC; Mr. C. E. Chatham, Chief of the Wave Dynamics 

 Division; and Mr. D. G. Markle , Chief of the Wave Processes Branch. The 

 HQUSACE Technical Monitors for this research were Messrs. J. H. Lockhart, 

 J. G. Housley, D. A. Roellig, and B. W. Holliday. 



The report was prepared by Dr. Fowler. The author acknowledges the 

 contributions to this report of the following: Dr. Steven A. Hughes, 

 Research Hydraulic Engineer, CERC; Mr. L. A. Barnes, Mr. J. E. Evans, 

 Engineering Technicians, CERC; and Ms. J. A. Denson and Mr. R. R. Sweeney, 

 Contract Students, CERC. 



Director of WES during preparation and publication of this report was 

 Dr. Robert W. Whalin. Commander of WES was COL Leonard G. Hassell, EN. 



