Table 69 



Point Lookout Harbor Breakwaters 



Au Gres, Michigan 



Date(s) Construction and Rehabilitation History 



1972 Construction of a 4,000-f t-long east and a 3 ,800-f t-long west break- 

 water was completed. The breakwaters were rubble-mound structures 

 extending parallel into Saginaw Bay (Figure 186) • They consisted of 

 cover stone laid on excavated material. Cover stone on the channel 

 sides consisted of 1/4-ton (min) material, and cover stone on the bay 

 sides of the breakwaters consisted of 3/4-ton (min) material. The 

 breakwaters had 10-ft crest widths and side slopes of IV: 3H for the 

 east breakwater and 1V:2.5H for the west structure. The crest el of 

 the east breakwater ranged from +9 to +12 ft Iwd, and the west break- 

 water had a crest el ranging from +6 to +9 ft Iwd (Figure 186) . 



1976 Approximately 1,300 tons of cover stone (1,500-300 lb) was placed 



along the bay side of the east breakwater in critical areas to pre- 

 vent failure of the structure. 



1978 Approximately 500 tons of cover stone (3/4 to 1 ton) was placed along 

 the bay side of the west breakwater in areas to maintain stability 

 and prevent failure. 



1986 Stone was placed at the harbor, and the structures are currently in 

 good condition. An aerial photograph (photo taken in 1981) of the 

 Point Lookout Harbor breakwaters is shown in Figure 187. 



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