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  2. Metropolitan Water Reclamation District of Greater Chicago

    en.wikipedia.org/wiki/Metropolitan_Water...

    The Metropolitan Water Reclamation District of Greater Chicago (MWRD), originally known as the Sanitary District of Chicago, is a special-purpose district chartered to operate in Cook County, Illinois since 1889. Although its name may imply otherwise, it is not a part of the City of Chicago 's local government but is created by Illinois state ...

  3. Area codes 778, 236, and 672 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_778,_236,_and_672

    Coordinates: 54°N 124°W. Area codes 778, 236, and 672 are telephone area codes in the North American Numbering Plan (NANP) for the Canadian province of British Columbia. They form an overlay complex with area code 604, which serves only a small southwestern section, the Lower Mainland, of the province (including Vancouver ), and area code 250 ...

  4. Lake Calumet - Wikipedia

    en.wikipedia.org/wiki/Lake_Calumet

    Lake Calumet. /  41.68000°N 87.59000°W  / 41.68000; -87.59000. Lake Calumet is the largest body of water within the city of Chicago. Formerly a shallow, postglacial lake draining into Lake Michigan, it was transformed into an industrial harbor during the 20th century. [ 1] Parts of the lake have been dredged, and other parts reshaped by ...

  5. Chicago area water quality - Wikipedia

    en.wikipedia.org/wiki/Chicago_Area_Water_Quality

    Chicago area water quality. Ever since Chicago was incorporated as a city in 1837, [1] it has faced multiple issues concerning water quality to accommodate its growing size, driven by the city's ideal geography and accessibility to one of the largest bodies of fresh water, the Great Lakes. [2] The City of Chicago has implemented multiple ...

  6. Geography of Chicago - Wikipedia

    en.wikipedia.org/wiki/Geography_of_Chicago

    Statistics. According to the United States Census Bureau, the City of Chicago has a total area of 606.1 km 2 (234.0 sq mi). 588.3 km 2 (227.1 sq mi) of it is land and 17.8 square kilometres (6.9 sq mi) of it is water. The total area is 2.94% water. The city has been built on relatively flat land, the average height of land is 579 feet (176 m ...

  7. List of North American Numbering Plan area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_North_American...

    this was the first part of North America to have its code changed three times: from 213 to 714 1951: to 619 in 1982, and to 760 in 1997. was to have originally split off the portion of 760 serving San Diego County to a new 442 area code in late 2008/early 2009; that plan was cancelled. 2009: overlaid by 442. 761.

  8. Water storage - Wikipedia

    en.wikipedia.org/wiki/Water_storage

    Water storage. Water storage is a broad term referring to storage of both potable water for consumption, and non potable water for use in agriculture. In both developing countries and some developed countries found in tropical climates, there is a need to store potable drinking water during the dry season. In agriculture water storage, water is ...

  9. List of United States cities by population - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States...

    The name of the state in which the city lies [1] The city population as of July 1, 2023, as estimated by the United States Census Bureau [1] The city population as of April 1, 2020, as enumerated by the 2020 United States census [1] The city percent population change from April 1, 2020, to July 1, 2023; The city land area as of January 1, 2020 [2]