TTNr.T.ASSTFTFX) 



SECURITY CLASSIFICATION OF THIS PAGE (When Date 



Entered) 





REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



MP 3-74 



2. GOVT ACCESSION NO. 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE (end Subtitle) 



BOLINAS LAGOON INLET, CALIFORNIA 



5. TYPE OF REPORT 4 PERIOD COVERED 



Miscellaneous Paper 



6. PERFORMING ORG. REPORT NUMBER 



HEL 24-15 



7. AUTHORfs; 



J. W. Johnson 



8. CONTRACT OR GRANT NUMBERfs.) 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Hydraulic Engineering Laboratory 

 University of California 

 Berkeley, California 94720 



10. PROGRAM ELEMENT. PROJECT, TASK 

 AREA 4 WORK UNIT NUMBERS 



04-2001 



11. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center 



Kingman Building, Fort Belvoir, Virginia 22060 



12. REPORT DATE 



May 1974 



13. NUMBER OF PAGES 

 46 



14. MONITORING AGENCY NAME 4 ADDRESSfJ/ different from Controlling Office) 



15. SECURITY CLASS, (of this report) 



Unclassified 



15a. DECLASSIFI CATION/ DOWN GRADING 

 SCHEDULE 



16. DISTRIBUTION STATEMENT (of this Report) 



Approved for public release; distribution unlimited 



17. DISTRIBUTION STATEMENT (ol (he abstract entered in Block 20, It different from Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Continue on reverse side it necessary and identity by block number) 



Tidal Inlets Waves 

 Tidal Prism Littoral Drift 

 Hydraulic Engineering Bolinas Bay 

 Lagoons California 



20. ABSTRACT (Continue on reverse aide It neceaaary and identify by block number) 



The hydraulic and sedimentary characteristics of tidal inlets on sandy coasts have long been of interest to 

 engineers involved in harbor design and maintenance. O'Brien (1931), in a study of west coast inlets, proposed a 

 relationship between the minimum inlet area below mean sea level and the tidal prism. Other investigators in recent 

 years have proposed similar relationships. A reanalysis of data from inlets on U.S. coasts by O'Brien (1967), resulted 

 in a later observation (O'Brien, 1971); he believed that the equilibrium relationship between inlet area and tidal 

 prism as he originally proposed seemed to be a first approximation only and that the next effort should be for 

 quantative understanding of deviations from the approximation. If the flow area is determined by the tidal prism, 



(Continued) 



DD ,3 



1473 



EDITION OF 1 NOV 65 IS OBSOLETE 



UNCLASSIFIED 



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