REPORT DOCUMENTATION PAGE 



Form Approved 

 OMB No. 0704-0188 



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 for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302, and to the 

 Office of Management and Budget, Paperwork Reduction Project (0704-0188), Washington, DC 20503. 



1 . AGENCY USE ONLY (Leave blank) 



2. REPORT DATE 



July 1999 



3. REPORT TYPE AND DATES COVERED 



Final report 



4. TITLE AND SUBTITLE 



Periodic Inspection of Jetties at Manasquan Inlet, New Jersey; Armor Unit 

 Monitoring for Period 1994-1998 



6. AUTHOR(S) 



Robert R. Bottin, Jr., William F. Rothert 



5. FUNDING NUMBERS 



7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 

 U.S. Army Engineer Waterways Experiment Station 

 3909 Halls Ferry Road, Vicksburg, MS 39180-6199; 

 U.S. Army Engineer District, Philadelphia 

 100 Penn Square East, Philadelphia, PA 19107-3390 



8. PERFORMING ORGANIZATION 

 REPORT NUMBER 



Technical Report CHL-99-16 



9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 



U.S. Army Corps of Engineers 

 Washington, DC 20314-1000 



10. SPONSORING/MONITORING 

 AGENCY REPORT NUMBER 



11. SUPPLEMENTARY NOTES 



Available from National Technical Information Service, 5285 Port Royal Road, Springfield, VA 22161. 



12a. DISTRIBUTION/AVAILABILITY STATEMENT 



Approved for public release; distribution is unlimited. 



12b. DISTRIBUTION CODE 



13. ABSTRACT (Maximum 200 words) 



Under the Periodic Inspections work unit of the monitoring Completed Navigation Projects Program, precise locations of 

 dolos armor units on the Manasquan Inlet, New Jersey, jetty heads were reestablished and compared with data obtained 

 previously. The vertical and horizontal positions of the dolosse were defined through limited ground surveys, low-altitude 

 aerial photography, and photogrammetric analysis. Areas at the seaward heads of the structures were recently rehabilitated 

 with CORE-LOC armor units. Base data were obtained relative to the precise vertical and horizontal positions of the 

 CORE-LOCs. A broken armor unit survey also was completed. The site will be revisited periodically in the future, and the 

 long-term response of the breakwater to its environment will be tracked. These periodic data sets will be used to improve 

 knowledge in the design, construction, and maintenance of the existing structure as well as future coastal projects. 



14. SUBJECT TERMS 



Aerial photography 

 Armor units 

 Breakwaters 



Dolosse 

 CORE-LOCs 



Manasquan Inlet, New Jersey 



Periodic inspections 

 Photogrammetry 

 Remote sensing 



15. NUMBER OF PAGES 



68 



16. PRICE CODE 



17. SECURITY CLASSIFICATION 

 OF REPORT 



UNCLASSIFIED 



18. SECURITY CLASSIFICATION 

 OF THIS PAGE 



UNCLASSIFIED 



19. SECURITY CLASSIFICATION 

 OF ABSTRACT 



20. LIMITATION OF ABSTRACT 



NSN 7540-01 -280-5500 



Standard Form 298 (Rev. 2-89) 



Prescribed by ANSI Std. Z39-18 

 298-102 



