susceptible to further storm-induced erosion. The 1980s experienced minimal storm activity 

 compared with the previous 30 years. 



1950-1954: Port Construction 



O 2 



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Year 



Figure 2-6. Number of tropical storms per year 1899 - 1996 documented as erosional to 

 Brevard County beaches. 



2. 3. 4. Sea-Level Rise 



Relative sea-level rise at the project site is estimated to be on the order of 2 mm per year 

 based on National Ocean Service (NOS) tide records at Fernandina and Mayport, Florida (Lyles, 



12 



Hickman, and Debaugh 1988), the closest long-term stations to Cape Canaveral. For a 50-year 

 period, e.g., 1948 to 1998, ocean water level would have risen about 0.32 ft (4 in.) with respect 

 to the land in coastal Brevard County. For a beach slope of 1 ft vertical to 10 ft horizontal, 

 relative sea-level rise may account for an apparent shoreline recession of about 3 ft. 



Operation and maintenance of a USACE water-level gauge located at the Trident Pier has recently been assumed by 

 the NOS as a long-term station. The Trident Pier, Port Canaveral, Florida, gauge record (872 1604) begins October 

 1994. 



2-10 



Chapter 2 Background 



