Reprint or republication of any of lliis material siiali <iive appropriate 

 credit to the U.S. Army Coastal Engineering Researcli Center. 



Limited free distribution within the United Slates of single copies of 

 this publication has been made by this Center. Additional copies are 

 available from: 



National Technical Infunualiun Service 

 ATTN: Oiierations Division 

 5285 Port RrvalRoad 

 Springfield, Virginia 22161 



The findings in this report are not to be construed as an official 

 Department of the- Army position unless so designated by other 

 autliorized documents. 



