Studies on water movements and sediments in Southern Lake Michigan : part 1[-3] ... / by John C. Ayers.

indicated current, ten current drogues were set in a line past
USPHS buoy #20 off Muskegon, Michigan, on 29 October 1963. The
series of drogues began at the U. S. Weather Bureau-U. S. Public
Health Service-University of Michigan weather tower one mile off
the beach, continued at 2-mile intervals along a course to the
south of west, passed about three-quarters of a mile north of
USPHS buoy #20, and ended about six miles west of buoy #20.
These drogues were set in the period between 0911 and 1050
EDT under north wind which continued until after the period of
drogue runs. The drogue movements that took place in 3-3/4 to 5
hours are shown in Figure 2.
All of the drogues, except the one immediately east of buoy
#20, moved southward. Drogue #8, immediately east of the buoy,
moved northward, almost directly upwind.
All the drogues were set to be influenced by the upper five
feet of the water (surface drogues).

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