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  2. Prairie Research Institute - Wikipedia

    en.wikipedia.org/wiki/Prairie_Research_Institute

    In the 1930s, the State of Illinois appropriated $300,000 which was supplemented by a $245,454 Public Works Administration grant for a new building to house Illinois State Geological Survey and Illinois Natural History Survey operations. [28] The Natural Resources Building, located on Peabody Drive in Champaign, was dedicated on November 15, 1940.

  3. Fourth principal meridian - Wikipedia

    en.wikipedia.org/wiki/Fourth_Principal_Meridian

    U.S. Bureau of Land Management map showing the principal meridians of Ohio, Indiana, and Illinois. The fourth principal meridian, set in 1815, [1] is the principal meridian for land surveys in northwestern Illinois and west-central Illinois, [2] and its 1831 [3] extension is the principal meridian for land surveys in Wisconsin and northeastern Minnesota.

  4. Third principal meridian - Wikipedia

    en.wikipedia.org/wiki/Third_Principal_Meridian

    U.S. Bureau of Land Management map showing the principal meridians in Illinois, Indiana, and Ohio. The third principal meridian begins at the mouth of the Ohio River and extends north to the northern boundary of the state of Illinois, and with the base line in latitude 38° 28′ 20″ [vague], governs the surveys in the state east of the third principal meridian, with the exception of those ...

  5. List of archaeological sites on the National Register of ...

    en.wikipedia.org/wiki/List_of_archaeological...

    [3] Landmark name Image Location County Culture Comments; 1: Albany Mounds Site: Albany: Albany Mounds Trail 4]: Whiteside: Middle Woodland: Hopewell: 2: Alton Military Prison Site: Alton: inside the block bounded by Broadway and William, 4th, and Mill Sts. 5]: Madison: Euro-American: 3: Apple River Fort Site: Elizabeth: 0.25 miles east-southeast of the junction of Myrtle and Illinois Sts. 6 ...

  6. Module:Location map/data/USA Illinois - Wikipedia

    en.wikipedia.org/wiki/Module:Location_map/data/...

    Module:Location map/data/USA Illinois is a location map definition used to overlay markers and labels on an equirectangular projection map of Illinois. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.

  7. Illinois statistical areas - Wikipedia

    en.wikipedia.org/wiki/Illinois_statistical_areas

    The U.S. State of Illinois currently has 47 statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated 14 combined statistical areas, 12 metropolitan statistical areas, and 21 micropolitan statistical areas in Illinois. [1]

  8. Gensburg-Markham Prairie - Wikipedia

    en.wikipedia.org/wiki/Gensburg-Markham_Prairie

    Much of the prairie area was annexed by the municipality of Markham, Illinois, a suburb located south of Chicago. In Illinois, annexations of this type were a precursor to real estate development. However, the prairie patch's relatively poor drainage made it less attractive to land development. Furthermore, in the years after World War II ...

  9. List of National Natural Landmarks in Illinois - Wikipedia

    en.wikipedia.org/wiki/List_of_National_Natural...

    Part of Horseshoe Lake State Fish and Wildlife Area. Illinois Beach Nature Preserve: 1980: Lake: State The site is a part of Illinois Beach State Park, and contains a wide range of savanna, prairie, wetland and beach ecosystems, as well as numerous endangered species.