Table 12
Ninilchik Harbor
Ninilchik, Alaska
Date(
Construction and Rehabilitation History
The project was authorized, including a 320- by 150-ft small-boat
1958
basin dredged to
ft mllw, a 400- by 50-ft entrance channel dredged
pile jetty located 50 to 1 0
to
ft mllw, and a
0
south of the channel entrance.
1961
The harbor was constructed. The pile jetty was deleted, the basin
revised to 400 by 120 ft, and rock sills were added upstream and
downstream of the basin. The downstream sill was built at a con-
trolling depth of
ft mllw.
1962
The spring breakup flood damaged the upstream sill.
The upstream sill was repaired.
1964
The basin subsided 2.5 ft in the earthquake.
1966
The entrance channel was realigned 100 ft north of the design loca-
tion. A timber groin (200
long) was constructed 150
south of
the entrance channel. The groin was damaged in an October storm, and
the entrance channel moved 1 0 ft farther north.
0
Major rehabilitation of the harbor was done. The Ninilchik River was
1967
diverted to its previous course south of the basin, and two short
rubble-mound jetties were constructed at the river mouth. Jetty
cross sections are shown in Figure
18
90
A study was authorized to determine the feasibility of harbor
improvements.
1984
The study determined that improvements to the harbor would not be
cost effective.
and an aerial photograph of
The harbor is illustrated in Figure
1985
the harbor is presented in Figure 35. The harbor has required annual
maintenance dredging and repairs since its construction.
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