PREFACE 



This report describes a technique to quantify changes in shoreline position 

 using time-sequence aerial photos. Aerial photos, which are usually available 

 more often than repetitive ground surveys, may be the only source of past shore- 

 line change data. The technique was developed during a sediment budget study 

 conducted for the U.S. Army Engineer District, Philadelphia. 



The report was prepared by Dr. Craig H. Everts and Deborah C. Wilson, under 

 the general supervision of N.E. Parker, Chief, Engineering Development Division. 

 Dr. C. Galvin, W.A. Birkemeier, and D.E. Lichy reviewed earlier drafts of the 

 manuscript. 



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 . 



2D E. BISHOP 

 Colonel, Corps of Engineers 

 Commander and Director 



