UNCLASSIFIED 



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REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



TP 77-10 



2. GOVT ACCESSION NO. 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE Cand SubMdeJ 



LITTORAL ENVIRONMENT OBSERVATIONS AND BEACH 

 CHANGES ALONG THE SOUTHEAST FLORIDA COAST 



5. TYPE OF REPORT & PERIOD COVERED 



Technical Paper 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORfo; 



Allan E. DeWall 



8. CONTRACT OR GRANT NUMBERfs) 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CERRE-CP) 



Kingman Building, Fort Belvoir, Virginia 22060 



D31194 



II. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center 



Kingman Building, Fort Belvoir. Virginia 22060 



12. REPORT DATE 



October 1977 



'3. NUMBER OF PAGES 



171 



14. MONITORING AGENCY NAME a ADDRESSfi/ dJHerent from Controlling Ollice) 



15. SECURITY CLASS, (ol thia raport) 



UNCLASSIFIED 



16. DISTRIBUTION STATEMENT (ol this Report) 



Approved for public release; distribution unlimited 



17. DISTRIBUTION STATEMENT (ol the abstract entered In Block 20, II ditlerent from Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Continue on reven 



Beach changes 



Boca Raton, Florida 



Erosion 



side // necessary and Identity by block number) 



Hollywood, Florida 



Jupiter, Florida 



Littoral environment observations 



Offshore protection 

 Wave climate 

 Waves 



20. ABSTRACT fConrlnue on reverse aide II necessary and Identify by block number) 



Daily and weekly surveys and observations of the beach and nearshore were 

 made at Jupiter, Boca Raton, and Hollywood, Florida, for 4% years between 1969 

 and 1973. During this relatively storm- free period, mean annual breaker 

 height varied from a high of 0.9 meter at Jupiter, the northernmost site, to 

 0.5 meter at Hollywood, the southernmost site. This decrease in wave energy 

 reaching the shoreline is attributed to the varying protection afforded by the 

 Bahama Banks, 80 kilometers offshore of Hollywood. Wave and longshore 

 (Continued) 



DD ,7> 



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