Table 20
Little Lake Harbor Breakwaters
Little Lake, Michigan
Construction and Rehabilitation History
Date
Construction of a 270-ft-long east breakwater and a
1964
west breakwater was completed at the site (Figure 54). These were
rubble- mound structures with cellular steel sheet-pile heads. The
east breakwater included 3-ton (minimum) cover stone and an 8-ft-wide
and
on the lake-
crest width. The side slopes were
side and harbor side, respectively. The elevation of the structure
ft lwd from the -6 ft contour lakeward and
ft lwd shore-
ward. Stone of 5 tons (minimum) was also used (Figure 5 )
5. A
20.7-ft diameter cellular steel sheet-pile breakwater head was built
on the lakeward end. The cell was sand filled and capped with as-
phalt. Its crest el was
ft lwd, and stone riprap was installed
the same cross section as the east structure (Figures 54 and
ex-
cept portions of the breakwater were constructed of
(minimum)
cover stone and 7-ton (minimum) toe stone. The west breakwater head
consisted of two 36.6-ft-diameter cellular steel sheet-pile struc-
tures. The cells were sand filled and capped with 3-ton (minimum)
cover stone. Their crest el was
around the structures (Figure 5 )
The condition of the breakwaters is very good at present. The proj-
1986
ect provides protection for recreational craft; however, entrance
into Little Lake during periods of storms is still hazardous because
of the scattered shoals in the channel entrance. Maintenance dredg-
ing is required annually. A model study was conducted to aid in the
development of the most economical plan to minimize shoaling without
adversely impacting navigation (Seabergh and McCoy 1982). Construc-
tion improvements have not been
however.
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