Table 3
Noyo Jetties
Noyo River and Harbor, California
Construction and Rehabilitation History
1924
Construction of two jetties across a sand bar was completed at the
mouth of Noyo River. These were rubble-mound structures spaced
approximately 125
apart. The initial lengths of the north and
south jetties were 648 and 1 0 ft, respectively.
1
1931
Work at the Noyo River entrance, which included dredging, rock re-
moval, and reconstruction of the jetties, was completed. The jet-
ties were constructed to their present lengths (Figure 7 . The
)
north jetty was constructed of mass concrete. It was 345 ft long
and connected to a 620-ft-long concrete wall. The south jetty was
constructed 234 ft long with concrete. Both structures had crest
els of +14 ft mllw.
1945
A 1,100-ft-long outer rubble-mound south breakwater was authorized
(Figure 7 . This structure has not been constructed.
)
1954
Stone (10-ton) was added to the seaward side of the north break-
)
1961
Minor rehabilitation of the jetties and north wall was completed.
was authorized
1962
A 500-ft-long outer rubble-mound north breakwater
(Figure 7). This structure has not been constructed.
The two outer breakwaters authorized by the Acts of 1945 and 1962
1970
were reclassified from an active to inactive category. They were
not economically feasible because of the high cost of construction
and maintenance. Model testing of the structures was conducted
(Wilson 1967).
1983
consisted of approximately 2,500 tons of capstone, 10 cu yd of con-
crete, 1,500cu yd of sandfill, and 4,100 tons of quarrystone fill.
The jetties are presently in good condition. Model testing cur-
1986
rently is being conducted to optimize the location of a struc-
ture in the immediate area of the River entrance (Bottin, in
preparation).
22
Previous Page
