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Illinois Natural Resources Geospatial Data Clearinghouse

University of Illinois at Urbana-Champaign

Illinois Height Modernization: Monuments, CORS, and RTK Networks

Web resources for land survey monuments and benchmarks, Continuously Operating Reference Stations (CORS), and Real Time Kinematic (RTK)) Networks in Illinois. These resource lists are incomplete, contact us with additional links. Some links lead to resources made available by commercial entities.


NGS CORS using Google Maps.
NGS CORS using Google Maps.
 
Details for Benchmark LC0155 in Champaign, IL.  Image credit: Geocaching.com
Image credit: Geocaching.com. Details for Benchmark: LC0155
 
Antenna mounted atop 421 Administration Building (Leica AT504 Pillar w/ Radome).  Image credit: DuPage County Cooperative CORS Network
Image credit: DuPage County Cooperative CORS Network for DP1A.

Land Survey Monuments in Illinois

NGS Datasheet Page
Find a Survey Mark

USGS Survey Benchmark Information
Not yet available on the Internet.

Geocaching Benchmark Benchmark Hunting
Geocachers track down and photograph benchmarks; search by zip code or Point ID.

HubTack, Inc. Survey Records On-Line
Includes Illinois monument records, GLO Notes, GLO Plats, and County Survey records.

DuPage County Geodetic Control Resources
DuPage County, Illinois Geodetic Vertical Control Network(Map)

Kane County Geodetic Monuments

Aurora, IL City Benchmarks
Aurora City Benchmarks (Map and all Control Monuments)

City of Naperville Land Suvey Monuments
City of Naperville: Survey Monument Locator (Map)

West Chicago Survey Control Network
Horizontal Monument Location Map
Vertical Monument Location Map

CORS in Illinois

National Geodetic Survey Cooperative CORS
NGS CORS Using Google Maps
NGS CORS Network Map

DuPage County Cooperative CORS Network

MoDOT: Missouri Department of Transporation
Illinois Stations related to St. Louis area

Real Time Kinematic (RTK) Networks in Illinois

KARA Company CPRS Sites Information
Coverage throughout Illinois

Seiler Instrument Company: Midwest RTK Network
St. Louis and Indianapolis networks cover south-central Illinois

Trimble VRS now - USA Illinois Coverage Map
Coverage for northern Illinois