Figure 28. San Luis Pass, 1962. 



Figure 29. San Luis Pass, 1965. 



In 1853, the thalweg extended south-southeast from the pass and was flanked by 

 a large shoal to the west. By 1933, the thalweg had shifted such that the 

 gulf end was alined almost due east, and the shoal had been driven north and 

 east, thus reducing the total area of the ebb tidal delta. Future shifts in 

 the thalweg locations (Fig. 30) were obtained from aerial photos. Compared to 

 most other inlets, the location of the San Luis Pass thalweg has remained 

 quite stable. 



36 



