Table 96 (Concluded) 



Date(s) Construction and Rehabilitation History 



a crest el of +12 ft Iwd with slopes of IV: IH on the harbor side and 

 1V:1,5H on the lakeside. 



1930- Major repairs were performed on portions of the Old Breakwater 

 1934 (Figures 265 and 266, Section C) . Portions of the concrete super- 

 structure were replaced, and a protective stone slope was installed 

 on the lakeside of the structure. 



1936 A 2,000-ft-long south entrance arm breakwater (Figure 265, Section J) 

 was constructed. The structure was built with rubble-mound materials 

 and had a +14.2 ft Iwd crest el with a 10-ft width. Slopes on the 

 harbor side were IV: 1.3 and 1V:1.5H, and slopes on the lakeside were 

 1V:1.5H. Armor stone weight was 3 tons (min) , with not less than 

 50 percent being 5 tons or more. 



1959- A portion of the Old Breakwater was removed, resulting in a 982-ft 

 1962 gap for a new entrance channel (Figure 265). A 1 ,800-f t-long rubble- 

 mound west breakwater (Figure 265) with a concrete cap was con- 

 structed to provide wave protection to the new entrance. The 

 breakwater had a crest el of +12.2 ft with a width of 8 ft. Side 

 slopes were 1V:1.3H on the harbor side and 1V:1.5H on the lakeside. 

 Armor stone was 7 tons (min) each. These modifications were model 

 tested prior to construction (Hudson, Housley, and Wilson 1960). 



1964- Rehabilitation of portions of the old breakwater (Figure 265) was 

 1965 completed. Repairs consisted of reconstruction of the stone slopes 

 adjacent to the sea sides of the structures. The cost of improve- 

 ments was about $220,000. 



1977 A disposal dike was constructed adjacent to the south entrance arm 

 breakwater (Figure 265) . 



1982 A major storm occurred in January with wind gusts reaching 75 mph, 

 resulting in extraordinary sized storm waves. An inspection of the 

 harbor breakwaters subsequent to the storm revealed damages to about 

 300 ft of the north breakwater. Concrete caps were dislodged, and 

 core stone was exposed. Rehabilitation was recommended. 



1983- Recommended repairs with stone and concrete to about 300 ft north of 

 1984 the breakwater were completed for a cost of about $900,000. New 



armor stone ranging from 6 to 13 tons was utilized (Figure 269) . The 



crest of the new stone was +13.5 ft Iwd. 



1986 The breakwaters are presently considered to be in good to fair condi- 

 tion. There are isolated areas of settlement along the length of the 

 Old Breakwater, the south breakwater, and the west breakwater. No 

 immediate repairs are required, but the structures are being moni- 

 tored for signs of accelerated deterioration. An aerial view of the 

 Buffalo Harbor breakwaters is shown in Figure 270. 



389 



