Table 5 

 Homer Harbor 

 Homer , Alaska 



Date(s) Construction and Rehabilitation History 



1958 The original harbor plan was adopted. 



1962 The original harbor was completed, including a I8O- by 672-ft basin 

 (2.8 acres), and a l,260-ft rubble-mound breakwater. 



1964 The original harbor was destroyed by earthquake, and the breakwater 

 was severely damaged. 



1965 The harbor was restored and relocated slightly to the northwest. The 

 restored harbor included 2.75 acres at -12 ft mllw and 7.25 acres at 

 -15 ft mllw, protected by a 1,0l8-ft main breakwater and a 238-ft 

 entrance breakwater. Both breakwaters were constructed of a quarry- 

 run core covered with an armor layer to crest elevation of +29 ft 

 mllw with 1:1.5 side slopes. The main breakwater had a 7-ft crest 

 width and was covered with a 5.5-ft layer of armor rock. The en- 

 trance breakwater had a 9-ft crest width and was covered with a 

 5.5-ft layer of armor rock on the entrance side and a 3-ft layer on 

 the seaward side. The main breakwater had a rock blanket 3 ft thick 

 extending 10 ft past the toe on the entrance side. The entrance 

 breakwater had a 3-ft-thick rock blanket extending 10 ft past the toe 

 on the seaward side. Armor rock was 700 to 1,100 lb. The entrance 

 channel was dredged to -15 ft mllw and 120 ft wide at project depth, 

 with 1:3 side slopes protected by a 1.5-ft-thick rock blanket. Cross 

 sections of the breakwaters are shown in Figure 13. 



1968- The basin was expanded to 16.5 acres by local interests by extending 

 1970 basin and protective berm 700 ft to the northwest. The harbor is 



illustrated in Figure 13, and an aerial photograph of the harbor is 



presented in Figure 14. 



1984- The project was expanded to 50 acres by extending the basin 1,040 ft 

 1985 to the southwest and 350 ft to the northeast, yielding a 3,000- by 



750-ft harbor. The basin was protected by a rubble-mound berm on the 

 northeast with a 220-ft crest width providing 2-lane vehicular 

 access. The berm had a top elevation of +31 ft mllw with 1:6 side 

 slopes on the seaward side and 1:3 side slopes on the basin side. 

 The harbor at this stage is illustrated in Figure 15. 



The main breakwater was removed from the expanded harbor and west 

 of the entrance and replaced with a breakwater with crest elevation 

 at +31 ft mllw, crest width of 220 ft, and side slopes of 1:2 on 

 the seaward side and 1:3 on the basin side. The dredged core was 

 covered on the seaward side by a 1-ft gravel layer (12-in. minus), a 

 3-ft layer of secondary armor rock (Class "B", 100 to 1,100 lb, 



(Continued) 

 53 



