PREFACE 



This report describes a method for estimating wind-wave growth and 

 decay over flooded areas where there is a major effect from bottom fric- 

 tion because of dense vegetation. The report was initiated in response 

 to a request from the U.S. Army Engineer Division, Lower Mississippi 

 Valley, New Orleans District, at the Division's 14 September 1976 

 Research and Development Workshop, indicating a need for technical guide- 

 lines for predicting wind-wave generation over flooded coastal areas. 

 The work was conducted under the coastal construction program of the 

 U.S. Army Coastal Engineering Research Center (CERC). 



These technical guidelines are an extension of the procedures given 

 in the Shore Protection Manual (SPM) (U.S. Army, Corps of Engineers, 

 Coastal Engineering Research Center, 1975). The design curves in the 

 SPM are limited to waves passing over a sandy bottom. The guidelines 

 presented in this report are discussed at greater length in CERC Technical 

 Paper No. 77-12 (Camfield, 1977). 



This report was prepared by Dr. Frederick E. Camfield, Hydraulic 

 Engineer, under the general supervision of R.A. Jachowski, Chief, 

 Coastal Design Criteria Branch. 



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. 



yja 



JOHN H. COUSINS 

 Colonel, Corps of Engineers 

 Commander and Director 



