Illinois Height Modernization Program (ILHMP)
Guided by the National Geodetic Survey, Height Modernization is the establishment of accurate, reliable heights using global positioning satellite (GPS) technology in conjunction with traditional leveling, gravity, and modern remote sensing technologies. Activities are designed to provide long-term benefits for the environment, help to prevent loss of life, improve property estimates, and save money.
Benchmarks, Datums, and Leveling Efforts
- 890 new benchmarks and 222 visited horizontal monuments totals 1,112 new benchmark records added to the National Spatial Reference System (NSRS) as of December 31, 2012. Roughly to 650 miles of new leveling in the summer of 2013 has been contracted via PSSU13008; the original ad, line descriptions, and kmz files are included in the .zip file.
- Illinois Geodetic Control (Beta V2.0)
- NGS datasheets and CORS stations, USGS and USACE stream gauges, and ILHMP level lines.
- Access derivative data: Download DSM and DTM/DEM Files
- Access original data deliverables for: Boone, Carroll, Champaign, DuPage, Grundy, Henry, Jo Daviess, Kane, Kendall, Lee, McHenry, Ogle, Peoria, Rock Island, Stephenson, Whiteside, Will, and Winnebago Counties, and also portions of Macoupin and Montgomery Counties.
- Goals include installation of surveying benchmarks to replace those destroyed or to densify the network and acquisition of high-resolution digital elevation data using remote sensing technologies like Light Detection and Ranging (LiDAR).
Showcase of LiDAR Data Applications
- Real-world uses for Illinois LiDAR data. To add your project, send information to: S. Beaverson.
Monuments, CORS, and RTK Networks
Steering Committee and Affiliated Agencies
Project participants include:
Illinois State Geological Survey,
Illinois Department of Transportation, Illinois Department of Natural Resources, Office of Water Resources,
Illinois Professional Land Surveyors Association, Illinois State Water Survey, and also National Geodetic Survey, Natural Resources Conservation Service, and the
United States Geological Survey .
Funding
The ISGS received $300,000 for Year 1 activities through the NGS Height Modernization Program with assistance from Congressman Timothy Johnson.
The ISGS received $725,000 for Year 2 activities through the NGS Height Modernization Program, championed by Congressman Timothy Johnson and Raymond LaHood/ Congressman Aaron Schock.
The ISGS received $800,000 for Year 3 activities through the NGS Height Modernization Program, championed by Congressman Timothy Johnson, Congressman Aaron Schock and Senator Dick Durbin.
The ISGS received $3,500,000 for Year 4 project activities through the Federal Highway Administration (FHWA) State Planning and Research (SPR) program and the Illinois Department of Transportation in conjunction with the NGS Height Modernization Program.
The ISGS received $3,500,000 for Year 5 project activities through the Federal Highway Administration (FHWA) State Planning and Research (SPR) program and the Illinois Department of Transportation in conjunction with the NGS Height Modernization Program.
The ISGS anticipates $3,500,000 for Year 6 project activities through the Federal Highway Administration (FHWA) State Planning and Research (SPR) program and the Illinois Department of Transportation in conjunction with the NGS Height Modernization Program.