Table 5
Homer Harbor
Homer, Alaska
Date(
Construction and Rehabilitation History
1958
The original harbor plan was adopted.
1962
The original harbor was completed, including a 1 0 by 672-ft basin
8-
(2.8 acres), and a ,260-ft rubble-mound breakwater.
1964
The original harbor was destroyed by earthquake, and the breakwater
was severely damage
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 1,018-ft main breakwater and a 238-ft
entrance breakwater. Both breakwaters were constructed of a
run core covered with an armor layer to crest elevation of
ft
side slopes. The main breakwater had a 7-ft crest
mllw with
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 1 ft past the toe on the entrance side. The entrance
0
breakwater had a 3-ft-thick rock blanket extending 1
past the toe
0
on the seaward side. Armor rock was 7 0 to 1,100lb. The entrance
0
channel was dredged to -15 ft mllw and 120
wide at project depth,
with
side slopes protected by a 1.5-ft-thick rock blanket. Cross
sections of the breakwaters are shown in Figure 13.
The basin was expanded to 16.5 acres by local
1968-
by extending
1970
basin and protective berm 700
to the northwest. The harbor is
presented in Figure 1 .
4
1984-
The project was expanded to 50 acres by extending the basin 1,040 ft
to the southwest and 350
to the northeast, yielding a 3,000- by
1985
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
mllw with 16 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
ft mllw, crest width of 220 ft, and side slopes of 1 2 on
:
at
the seaward side and 1 3 on the basin side. The dredged core was
:
covered on the seaward side by a
gravel layer (12-in. minus), a
3-ft layer of secondary armor rock (Class
1 0 to 1,100 lb,
0
(Continued)
53
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