SS City of Milwaukee of year. "City of Milwaukee" sailed for the Grand Trunk until 1978 when, as the last of their fleet of three to be sailing, she was chartered to the Ann Arbor Railroad. She sailed for this road until 1982, when she was retired permanently. She is currently preserved in Manistee, Michigan as a National Historic Landmark museum. In addition to being a museum to tour, she is also operated seasonally as a bed and breakfast. She is the last unmodified traditional railroad car ferry afloat upon the lakes, still with her triple expansion steam engine, original woodwork and brass fixtures.
Great Lakes U.S. side highlight five large municipal systems (those of Detroit, Cleveland, Buffalo, Milwaukee and Gary) as being the largest current periodic sources of untreated discharges into the Great Lakes. Algae such as diatoms, along with other phytoplankton, are photosynthetic primary producers supporting the food web of The Great Lakes. The changes in the size or in the function of the primary producers may have a direct or an indirect impact on the food web. Photosynthesis carried out by diatoms comprises about one fifth of the total photosynthesis. By taking CO2 out of the water, to photosynthesize, diatoms help to stabilize