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 Christmas Tree Tree". Milwaukee City Christmas Tree The Milwaukee City Christmas Tree (1913–1995; 2006–present), also known as Milwaukee City Holiday Tree (1995–2006) is a pine tree that is placed at city hall and decorated by the city council of Milwaukee, Wisconsin, during the Christmas holiday season. The tradition began in 1913 and continues to this day. The city’s Christmas tree tradition began in 1913. One tree that went on display, a Colorado Blue Spruce, had been a housewarming gift 30 years earlier for a couple who had moved into their new home. Another tree donated had been planted to honor a son