REPORT DOCUMENTATION PAGE 



Form Approved 

 OMB No. 0704-0188 



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1. AGENCY USE ONLY (Leave blank) 



2. REPORT DATE 

 April 1994 



3. REPORT TYPE AND DATES COVERED 



Final report 



4. TITLE AND SUBTITLE 



Noyo River and Harbor, California, Design for Harbor Entrance 

 Protection; Coastal Model Investigation 



6. AUTHOR(S) 



Robert R. Bottin, Jr. 



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 



8. PERFORMING ORGANIZATION 

 REPORT NUMBER 



Technical Report CERC-94-5 



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



U.S. Army Engineer District, San Francisco 



211 Main Street, San Francisco, CA 94105-1905 



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) 



A l:75-scale undistorted hydraulic model was used to determine wave conditions at the entrance to Noyo 

 River and Harbor as a result of an offshore breakwater. The impact of the improvements on long-period wave 

 conditions in the harbor as well as wave-induced and riverine bed-load sediment patterns was evaluated. The 

 model reproduced the river from its mouth to a point approximately 15,000 ft upstream, both Noyo Harbor and 

 Dolphin Marina located on the south bank, approximately 3,400 ft of the California shoreline on each side of 

 the river mouth, Noyo Cove, and sufficient offshore area in the Pacific Ocean to permit generation of the re- 

 quired test waves. A 45-ft-long wave generator, crushed coal sediment tracer material, and an automated data 

 acquisition and control system were utilized in model operation. It was concluded from the model investiga- 

 tion that: 



a. Existing conditions are characterized by rough and turbulent wave conditions in the Noyo River en- 

 trance. Maximum wave heights ranged from 8.5 to 13.7 ft in the entrance for operational conditions (incident 

 waves with heights of 14 ft or less) and from 12.2 to 15.2 ft for extreme conditions (waves up to 32 ft in 

 height) depending on incident wave direction. 



(Continued) 



14. SUBJECT TERMS 

 Breakwaters 

 Harbors, California 

 Hydraulic models 



Noyo River and Harbor, California 

 Wave protection 



15. NUMBER OF PAGES 



135 



16. PRICE CODE 



17. SECURITY CLASSIFICATION 

 OF REPORT 



UNCLASSIFIED 



SECURITY CLASSIFICATION 

 OF THIS PAGE 

 UNCLASSIFIED 



SECURITY CLASSIFICATION 

 OF ABSTRACT 



20. LIMITATION OF ABSTRACT 



NSN 7540-01-280-5500 



Standard Forrr 298 (Rev. 2-89) 



Prescribed by ANS. 5to I39-'S 



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