This article describes the progress that has been made in the intervening 

 6 years toward correcting the beach erosion problems and evolving long 

 range, coordinated plans for the best use of the shoreline. 



93. JOHNSON, J.W., "Model Studies Made at the University of California, 

 River and Harbor Laboratory," Transactions of the American Geophys- 

 ical Union, Vol. 29, 1948, pp. 107-116. 



Keywords: Accretion, California (Santa Monica), Detached breakwater, 

 Downdrift beaches. Hydraulic model (three-dimensional). 

 Littoral transport 



Since establishment of the River and Harbor Hydraulic Laboratory at 

 the University of California at Berkeley, approximately 10 years ago, 

 numerous model studies have been made in connection with a variety of 

 engineering problems. Some of the data obtained in the model studies had 

 not been published previously. This paper briefly describes a few of the 

 important investigations. 



94. JOHNSON, J.W., "Dynamics of Nearshore Sediment Movement," Bulletin 

 of the American Association of Petroleum Geologists, Vol. 40, No. 9, 

 Sept. 1956, pp. 2211-2232. 



Keywords: Accretion, California (Santa Monica), Detached breakwater, 

 Downdrift beaches. Littoral transport 



Considerable research on the basic mechanics of shoreline processes 

 has been done over the last 15 years by geologists and engineers. Much 

 of this research was done during World War II, but in more recent years 

 numerous investigations have been made in connection with the qualitative 

 and quantitative effects of shoreline structures on nearshore sediment 

 movement. This paper summarizes some of the more important investigations 

 that have been made on the many phases of this phenomenon. 



95. JOHNSON, J.W., "The Littoral Drift Problem at Shoreline Harbors," 

 Journal of the Waterways and Harbors Division, Vol. 83, No. WWI, 

 Apr. 1957, pp. 1211-1--1211-57. Discussion by R. Silvester, Jan. 

 1958, pp. 13-17; Closure, May 1958, pp. 3-9. 



Keywords: Accretion, Brazil (Ceara) , California (Channel Islands and 



Santa Monica), Detached breakwater, Downdrift beaches. Littoral 

 transport 



A harbor which fronts directly on an open shoreline and has a rela- 

 tively small flow into and out of it is defined as a shoreline harbor. 

 The littoral drift, which occurs along the shoreline, causes certain de- 

 sign, construction, and maintenance problems. This paper summarizes some 

 of these basic considerations in generalized terms and presents a few 

 case histories of typical shoreline harbors for which operational infor- 

 mation extending over a long period of years is available. 



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