On the ocean shores north of Point Loraa at the entrance to San 

 Diego Bay, littoral drift is in general southward in winter and north- 

 ward in summer. In the Oceanside area southward drift is predominant, 

 as indicated by the general accretion at the Camp Pendleton Harbor 

 jetties and erosion to the south. At Ocean Beach the net annual move- 

 ment in either direction is negligible. South of Point Loraa, the 

 predominant direction of drift is northward. At all ocean front areas 

 there is also a large seasonal onshore-offshore movement of material. 

 At Bay View Estates in Coronado, there is a tendency toward eastward 

 drift along the bay shore, but little beach material is available for 

 transport by wave action. 



The Division and District Engineers and the Beach Erosion Board 

 concluded that the most suitable and economical plans of shore pro- 

 tection for the several problem areas are as follows: 



a. At Oceanside, construction of a protective beach gen- 

 erally 200 feet wide and approximately 10,000 feet long from the 

 vicinity of Ninth Street to Witherby Street by artificial placement of 

 approximately 900,000 cubic yards of suitable sand; 



b. At Ocean Beach, construction of a protective beach gen- 

 erally 20 feet wide and approximately 1,700 feet long between Cape 

 May and Narragansett Avenues by artificial placement of approximately 

 250,000 cubic yards of suitable sand (at no cost to the project), and 

 construction of one stone groin about 530 feet long in the vicinity 

 of Cape May Avenue; 



c. At Imperial Beach, construction of a system of five stone 

 groins from the north end of the existing Naval Radio Station seawall 

 to a point about 400 feet south of Coronado Avenue, the most northerly 

 groin to be 600 feet long and the others each to be about 400 feet long. 



d. For Coronado at the Bay View Estates, a stone or broken 

 concrete revetment about 1,900 feet long with a top elevation of 10 

 feet above mean lower low water. 



They concluded that the plans for Oceanside, Ocean Beach and Imperial 

 Beach are justified by prospective benefits and that the public interest 

 involved in protection of public property warrants Federal assistance 

 in accordance with existing policy. They recommended adoption of 

 separate projects by the United States authorizing Federal participation, 

 subject to certain conditions, by contribution of funds in amount of 

 the entire cost of protecting Federally owned shores and one-third of 

 the costs applicable to protection of other publicly owned shores at 

 Oceanside, Ocean Beach and Imperial Beach. As the shore of Bay View 

 Estates is privately owned, they further concluded that no public interest 

 is involved in the proposed work for that area, and recommended that 

 local interests consider adoption, based upon their own determination 

 of economic justification, of a project for construction of revetment. 



The Chief of Engineers concurred in the views and recommendations 

 of the Beach Erosion Board. 



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