rubble-mound structure for flood control only, that would provide protec- 

 tion against overtopping along Revere Boulevard. 



Scope of Work 



The physical modeling study was divided into four tasks. Task A was 

 to confirm the validity of numerical and physical models by recreating a 

 known storm event and comparing the overtopping in the physical model 

 to measured overtopping in the backshore, using the beach profile that ex- 

 isted at that time. Task B was to determine overtopping for the duration 

 of the selected design storm event along Revere Beach using beach pro- 

 files surveyed after the beachfill project. Data from Task B also were 

 used by CERC's Research Division to develop a "bore runup overtopping 

 module" for Revere Beach to be used with numerical models. Task C was 

 to use one of the profiles taken before the beachfill project and determine 

 overtopping rates for storm conditions selected from a synthetic storm 

 database developed from major storm events identified by wave hindcast- 

 ing. Data from Task C were used by CERC's Research Division to de- 

 velop a "broken wave overtopping module" for Revere Beach to be used 

 with numerical models. 



The fourth task of the physical modeling effort was the study of the pro- 

 posed dike along Revere Boulevard. The study included determination of 

 overtopping rates for the proposed park dike and a rubble-mound dike for 

 flood control only when fronted by profiles from both the 1978 and 1991 

 surveys and subjected to severe storm conditions. 



Chapter 1 Introduction 



