The Historical Maps Online collection contains images of maps charting the last 400 years of historical development in Illinois and the Northwest Territory, including historic topographic maps of Illinois. The collection also contains early large-scale topographic quadrangles published by the United States Geological Survey in the late nineteenth and early twentieth centuries. Collection size: approximately 420 maps.
Use to "locate, create, and print maps of large and small areas within Illinois in a few minutes. Numerous map layers may be added to the base map to give a better idea of a specific location's resources and other important attributes." Optimized for use with the Chrome browser.
"... a list of impaired waters to fulfill the requirements set forth in Section 303(d) of the federal Clean Water Act and the Water Quality Planning and Management regulation at 40 CFR Part 130" maintained by the Illinois Environmental Protection Agency.
ISGS maps are published in a variety of series, differentiated primarily by level of review. Those map series that are available online are described below.
Note for off-campus users: Network ID must include capitalized SIU prefix. Entering siuxxxxxxxx will not work.
Historical maps charting the growth and development cities and towns. Each map shows the street and building addresses at the time the map was made, as well as the outline of each building and construction details and was created to assist fire insurance companies assess property risks.
Includes links to current highway, street, and bicycle maps, along with historical maps, functional classification, district & regional maps, mostly in PDF; and GIS county series data.
Includes interactive maps, winter road closures, road construction information, data for daily and hourly traffic, and maps of Peoria and St. Louis Metro-East