The project included rock reinforcement of the two-step breakwater and repair
of the existing rubble-mound breakwater. A chronology of events related to
development and repair of the harbor structures is given in Table
Edmond's Harbor, Washington
119. Edmonds is located on the southeastern coast of Puget Sound, about
15 miles north of Seattle, Washington. The project includes maintenance of
two breakwaters and an entrance channel to the basin.
120. The harbor was constructed by local interests in 1962, and it
includes a mooring basin, a rubble-mound breakwater 1,850 ft long with a crest
mllw, a rock-reinforced treated pile and plank break-
elevation of
water about 250
long, and an entrance channel. The Corps project, adopted
in 1965, provides for maintenance of the two breakwaters and the entrance
channel. Condition surveys are made annually, but there is no record of
maintenance work being done. Local interests extended the basin to the north
in 1968 and are responsible for all maintenance on the extended basin. A
chronology of events related to the development and repair of the harbor
structures i given in Table 36.
s
Gray's Harbor, Washington
121. Gray's Harbor is located on the Pacific coast of Washington, about
50 miles north of the Columbia River. The project, adopted in 1896 and modi-
fied by 1 subsequent Acts, includes a deep-draft navigation channel about
3
miles long in the harbor and the Chehalis River. The outer portion of the
south jetty and a 17,200-ft-long
channel is protected by a
north jetty; the inner portions are maintained by dredging.
122. The south jetty was completed in 1902. The north jetty was fin-
then restored, lengthened, and raised in 1916. The jetties
ished in
were constructed by end-dumping from railroad cars, which failed to provide a
well-keyed section. The jetties therefore deteriorated by displacement of
individual stones by wave forces. Further deterioration was caused by sub-
sidence due to unstable foundation conditions. The south jetty was recon-
and the north jetty during 1941 to 1942. Both
structed during
to
jetties continued to deteriorate after the reconstruction. Hydraulic model
were conducted during 1950
1952
After the reconstruction of the north jetty during 1941 to 1942, a
channel was maintained across the bar, and no further maintenance
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