Interactive Map Gallery
DuPageMaps - To be retired.
NOTICE: The DuPageMaps Interactive Web Mapping Application will be retired May 31st 2016 . Please use the new "Parcel Viewer" in our DuPage Maps Portal. Select "A" Parcel Viewer for DuPage County Illinois. A "How to Use" help document is available for download within the application.
DuPage County, Illinois:
Interactive Web Mapping Application "DuPageMaps". - To be retired.
You may need to install or upgrade your web browser on your computer to view the new "Parcel Viewer" web mapping application. If you have popup blocker turned on (or) you are trying to view the application in "Private Mode" certain functions in the web mapping application will not operate properly.
New "Benchmarks NAVD88" Interactive Web Mapping Application (Find a Benchmark in DuPage)
The DuPage County, Illinois Geodetic Vertical Control Network (G.V.C.N.) interactive web mapping application called "Benchmarks NAVD88" has been updated. The new application can be used on a smartphone tablet, laptop or workstation.
Application information: The "Benchmarks NAVD88" application can be used to locate benchmarks in and around the County of DuPage. Detailed benchmark PDF documents are available for download.
How to use "Benchmarks NAVD88": Open the application / zoom into a specific benchmark. Select (or left mouse click) on a benchmark (a pop-up window will appear) click on the "VIEW_BENCHMARK_PDF" link which will open (or download) a PDF document with detailed information for the selected benchmark. PDF documents can be saved locally and printed out.
A new zoom button has bee added into the "Benchmarks NAVD88" web mapping application. Users can search and zoom into a street intersection then zoom out to find the closest benchmark. The new button is located in the upper left hand corner of the application.
To access this application through our
DuPage Maps Portal scroll to the right using the ">>" arrows and select the "DuPage County Geodetic Control & GPS CORS Base Stations" Map Gallery. Next select the "NAVD88 Benchmarks" DuPage County GIS application to open the application.
You may need to install or upgrade your web browser on your computer to view the new "Benchmarks NAVD88" web mapping application. If you have popup blocker turned on (or) you are trying to view the application in "Private Mode" certain functions in the web mapping application will not
Notice Benchmark Data as of: April 25, 2012
DuPage County has upgraded its benchmark system from the North American Geodetic Vertical Datum of 1929 (NGVD29) to the North American Vertical Datum of 1988 (NAVD88). Benchmarks in NGVD29 are no longer available.
Additional information / Questions:
If you locate a benchmark in the field and it is not shown in the new NAVD88 benchmark web mapping application, it’s either an old NGVD29 benchmark (which is no longer supported or available from the County of DuPage) or it may be a local village benchmark.
If you find a disturbed or destroyed DuPage County benchmark in the field or have any questions please submit an email to