Overwash Deposition 



0,000 



Townsend 

 Inlet 



Figure 46. Overwash deposition on Ludlain Beach 

 as a result of the 6 to 8 March 1962 

 storm. Where overwash occurred, 14.7 

 cubic yards per foot of sediment was 

 moved landward from the beach, in 

 some places more than 1,000 feet. 



determine the persistence, orientation, distance from shore to the bars, and 

 approach direction of waves breaking on the bars. The photos provided only a 

 two-dimensional view of the bars because of the general inability to penetrate 

 the water surface. In some instances bar presence and characteristics were 

 inferred from the breaking wave pattern. The major value of the aerial photos 

 was in qualitatively determining the variation in bar characteristics along 

 the coast, rather than in establishing the magnitude of various bar parameters. 



Figure 47 shows the orientation of submarine bars during three aerial photo 

 missions (1959, 1962, and 1968) in the months of March and April when the bars 

 were well pronounced. The figure also shows that submarine bars generally 

 trend at a slight angle to the coast, becoming more distant in a southerly 

 direction. Since most of the analyzed aerial photo sets were taken in the late 

 winter and spring (Table 5) , the presence of bars in the sample of 20 photo 

 sets is probably greater than the yearly average. 



60 



