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

Milwaukee Embayment Survey
In June 1964 the R/V INLAND SEAS carried out a detailed
sediment survey in the embayment on which the city of Milwaukee
is located.
In no part of the embayment outside of the seawall was
there any physical evidence of eutrophic modification of bottom
sediments.
The effluent from the Milwaukee sewage disposal plant is
dumped directly into Milwaukee harbor, inside the seawall, by
an outfall at the east end of the.disposal plant property. The
sediments behind the seawall from North Entrance to South
Entrance and Shore Park Breakwater Light (USLS Chart No. 743)
are all black; all are heavily organic; and all appear rich in
worms.
Behind the seawall the water is discolored and turbid.
Its uncorrected conductivity values run 30 to 50 percent higher
than those of water outside the seawall. Water in the vicinity
of the outfall is nearly black and smells of hydrogen sulphide.
Streams of discolored high-conductivity water blow downwind out
through the openings in the seawall and can be traced visually
for considerable distances into the open lake.
Limitations of draft prevented the INLAND SEAS from exploring the sediments and water behind the seawall south of
Shore Park Breakwater Light.

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