Milwaukee both January 17, 1982 and February 4, 1996. The 1982 event, also known as Cold Sunday, featured temperatures as low as in some of the suburbs as little as to the north of Milwaukee. In the 1990s and 2000s, Lake Michigan experienced large algae blooms, which can threaten marine life. Responding to this problem, in 2009 the city became an "Innovating City" in the Global Compact Cities Program. The Milwaukee Water Council was also formed in 2009. Its objectives were to "better understand the processes related to freshwater systems dynamics" and to develop "a policy and management program aimed at
Milwaukee City Hall surrounding the Milwaukee River. The upper part of the tower was rebuilt after a fire in October 1929. The bell in City Hall was named after Solomon Juneau, Milwaukee's first mayor. It was designed and crafted by the Campbells, who were early pioneers in creating diving chambers and suits near the Great Lakes area during that time. City Hall was the marketing symbol of Milwaukee until the completion of the Calatrava wing of the Milwaukee Art Museum in 2001, but the bell tower continues to be used as a municipal icon and in some traffic and parking signs. Formerly the