Figure A7. Completed project at south end 



Figure A8. Completed project at north end 



evolution of the beach fill as a result of the effects of the offshore 

 breakwaters. Figure A9 shows the pre- and post-construction shoreline 

 positions. 



Wind data from the Baltimore Washington International Airport were 

 obtained for the period January 1 to December 30, 1991, along with Littoral 

 Environmental Observations (LEO), site photographs, and aerial photography. 

 The wind data were used to hindcast the wave climate at the site. 



The response of the shoreline following the breakwater construction and 

 beach fill placement was initially predicted using an empirical method (Ahrens 

 and Cox 1990). The GENESIS (GENE ralized Model for Simulating 

 Shoreline change) numerical shoreline change model (Hanson and Kraus 1989) 

 was used to simulate the evolution of the shoreline under actual conditions that 



A16 



Appendix A Case Design Example of Detached Breakwater 



