PREFACE 



This report presents a computational technique for determining the long- 



shore energy flux factor, P 



Is: 



using current observations from the Littoral 



Environmental Observation (LEO] program. P^g is discussed in Chapter 4 of the 

 Shore Protection Manual (SPM) (U.S. Army, Corps of Engineers, Coastal Engineer- 

 ing Research Center, 1977) . The work was carried out under the coastal engi- 

 neering research program of the U.S. Army Coastal Engineering Research Center 

 (CERC) . 



The report was prepared by Dr. Todd L. Walton, Jr., Hydraulic Engineer, 

 under the general supervision of Dr. J.R. Weggel, Chief, Evaluation Branch, 

 Engineering Development Division. 



Comments on this publication are invited. 



Approved for publication in accordance with Public Law 166, 79th Congress, 

 approved 31 July 1945, as supplemented by Public Law 172, 88th Congress, 

 approved 7 November 1963. 



TED E. FTSHOP 



Colonel, Corps of Engineers 



Commander and Director 



