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Illinois Height Modernization: Digital Elevation Data

Historically, Digital Elevation Model (DEM) data for Illinois have mainly been based on 5- to 10-foot contour data. Large-scale, digital topographic maps are most common; many data resources contain elevation information acquired in the 1920s and 1930s. DEM data collections are now being developed based on data with a resolution of 2 feet to 6 inches. A comparison between older data and newer high-resolution data shows remarkable improvement in recorded detail.


ILHMP has established data sharing agreements to archive and distribute elevation data for select Illinois counties. Data have been acquired using Light Detection And Ranging (LiDAR) technology, in compliance with different contract specifications; data are offered as originally delivered, unless otherwise noted. It is important to remember that not all LiDAR data collections are designed to the same set of technical specifications. This LiDAR Glossary from the Applied Geomatics Research Group is useful, as is the Glossary with data examples from Terranean Mapping Technologies. Table 4.9 of the American Society of Photogrammetry and Remote Sensing (ASPRS) LAS [File Format] Specification Version 1.3-R10 defines the standard classes which are used to delineate LiDAR returns into identified points for water, ground, building, etc.


To facilitate download of multiple data files, use the DownThemAll tool for Firefox. You may also submit an ISGS Help Request Form to receive any county by mail. Contact S. Beaverson if you have data to share.


Access Data Derivatives

ArcGrid format datasets of LiDAR derivatives

Download DSM and DTM/DEM Files new

Full-resolution digital terrain model (DTM) or digital elevation model (DEM), and digital surface model (DSM) data for selected areas. The associated shaded relief model, or ‘hillshade’, has also been created for each DTM/DEM and DSM.

Access Original Data Products

2010 data acquired by Merrick for the Illinois Height Modernization Program

Kendall County Data
Kendall 2010
Kendall Tile Index
Kendall LAS files
Kendall Metadata

2010 data acquired by Aero-Metric for NRCS for a 115 sq. mile area in Illinois

Macoupin and Montgomery County Data
LAS Unclassified(Flightlines): 17.1 GB; 28 files
LAS Classified: 15.3 GB; 170 files
DEM Bare Earth TXT: 2.6 GB; 165 files

2009 data acquired by Aero-Metric for the Illinois Department of Transportation (IDOT)


Data files for Carroll, Henry, JoDaviess, Lee, Ogle, Rock Island, Stephenson, and Whiteside Counties are offered individually, in a table designed to be an approximation of the county footprint. These data were acquired for IDOT District 2. Data were delivered in sub-sets roughly approximating each county, however data files WERE NOT duplicated between adjacent counties. Supplemental data from adjacent counties WILL BE needed to provide complete coverage for any given county. When there are only water return points for a given tile, only a First Return data file is provided. LAS data files are only available for Henry County.


Data file formats include a suite of .dat, .dgn, and .tin files for each data tile. These files were generated for GEOPAK, the civil engineering design software in use by the Federal Highway Administration at the request of IDOT. A .dat file is a data file used to create the .tin triangulated irregular network file. A .dgn file is a related design file.


Aero-Metric has created a set of statewide index tiling schemes (24 MB) with grid-spacing set at 10,000 feet, 5,000 feet, and 2,000 feet. The 2,000 foot tiling scheme for the State Plane West projection is suitable for data provided by Aero-Metric for IDOT. Attribute-level metadata pertaining to data delivered for each county are NOT included. These indexes are not suitable for data acquired by Aero-Metric prior to 2009.

Carroll County Data
DAT: 30.5 GB; 3,297 files
DGN: 24.0 GB; 3,297 files
TIN: 79.5 GB; 3,297 files
First Return XYZI: 62.2 GB; 3,332 files
Bare Earth XYZI: 29.3GB; 3,297 files
LAS: 118 GB; 3,626 files
Henry County Data
DAT: 54.6 GB; 5,903 files
DGN: 45.0 GB; 5,903 files
TIN: 145.0 GB; 5,903 files
First Return XYZI: 112.0 GB; 5,905 files
Bare Earth XYZI: 53.5 GB; 5,904 files
LAS: 94.7 GB; 5,905 files
JoDaviess County Data
DAT: 37.6 GB; 4,373 files
DGN: 30.4 GB; 4,373 files
TIN: 99.9 GB; 4,373 files
First Return XYZI: 47.2 GB; 4,377 files
Bare Earth XYZI: 36.9 GB; 4,373 files
LAS: 152 GB; 4,547 files
Lee County Data
DAT: 49.6 GB; 5,230 files
DGN: 38.6 GB; 5,230 files
TIN: 132.0 GB; 5,230 files
First Return XYZI: 96.8 GB; 5,232 files
Bare Earth XYZI: 48.7 GB; 5,230 files
LAS: 89.6 GB; 5,421 files
Ogle County Data
DAT: 53.3 GB; 5,484 files
DGN: 42.3 GB; 5,484 files
TIN: 142.0 GB; 5,484 files
First Return XYZI: 103.0 GB; 5,484 files
Bare Earth XYZI: 52.3 GB; 5,484 files
LAS: 99.4 GB; 5,680 files
Rock Island County Data
DAT: 25.5 GB; 3,271 files
DGN: 20.9 GB; 3,271 files
TIN: 67.9 GB; 3,271 files
First Return XYZI: 58.5 GB; 3,355 files
Bare Earth XYZI: 25.0 GB; 3,271 files
LAS: 66.3 GB; 3,479 files
Stephenson County Data
DAT files: 37.1 GB; 4,062 files
DGN files: 29.2 GB; 4,063 files
TIN files: 98.9 GB; 4,061 files
First Return XYZI: 72.5 GB; 4,063 files
Bare Earth XYZI: 36.5 GB; 4,063 files
LAS: 88.6 GB; 4,195 files
Whiteside County Data
DAT: 46.4 GB; 5,002 files
DGN: 36.1 GB; 5,017 files
TIN: 123.0 GB; 5,002 files
First Return XYZI: 91.7 GB; 5,022 files
Bare Earth XYZI: 44.9 GB; 4,997 files
LAS: 94 GB; 5,280 files

2008 data acquired by Aero-Metric for the USGS, USACE, IDNR, and Champaign and Kane Counties


ABGPS Survey Report for Champaign, Grundy, Kane and McHenry Counties

Champaign County
Contours (geodata base or shapefiles): 6.41 GB; 1,213 files
LAS Classified: 143 GB; 1,175 files
LAS Classified Bare Earth: 41.7 GB; 1,210 files
XYZ - Bare Earth: 53.1 GB; 1,210 files
Grundy County
Contours, 2-Foot: 5.1 GB, 525 files
LAS - Classified*: 63.5 GB; 525 files
LAS - Bare Earth: 15.9 GB; 535 files
XYZ - Bare Earth: 20.0 GB; 535 files
Kane County
Contours: 7.39 GB, 664 files
LAS Classified*: 83.2 GB; 661 files
XYZ - Bare Earth: 25.6 GB; 661 files
McHenry County
Contours, 2-Foot: 8.71 GB, 700 files
LAS - Classified: 73.5 GB; 738 files
XYZ - Bare Earth: 30.2 GB; 739 files

2008 data acquired by Sanborn Mapping for the United States Geological Survey (USGS) and Peoria County.

Peoria County Data
Contours - 2 Foot
Intensity Images for Buildings, High Vegetation, and Low Vegetation
Bare Earth (shapefiles)
LAS Files - Classified
XYZ Files - Bare Earth

2007 data acquired by Sanborn Mapping for the United States Geological Survey (USGS)


LiDAR data files for Boone and Winnebago Counties are offered individually, in a table designed to be an approximation of the county footprint. Derivative data files are bundled into N-S flightlines. ENZ file format corresponds to a text file format of Easting, Northing, Z(Elevation) or xyz data.

Boone County Data
Contours - 2 Foot
ENZ Files - Bare Earth
LAS Files - Classified
Winnebago County Data
Contours - 2 Foot
ENZ Files - Bare Earth
LAS Files - Classified

2006 data acquired by Aero-Metric for DuPage County

DuPage County Data
Related data: Index, Breaklines, Contours, etc.
LAS - Classified: 42.6 GB; 421 files
XYZ - Bare Earth: 23.1 GB; 421 files

2004 data acquired by Aero-Metric for Will County

Will County Data
Related data: Index, Contours, etc.
DGN: 8.67 GB, 1,050 files
XYZ - Bare Earth: 76.5 GB, 1, 028 files

Access Data from Other Agencies

USGS: Upper Midwest Environmental Sciences Center


Data files for pools of the Mississippi River, including 1-meter Digital Elevation Model (DEM) data, 0.5 meter Contour lines and 1-meter first and last return pool-wide Hillshade images. Access UMESC Digital LiDAR Derivatives. 1-meter Digital Elevation Models (DEMs), 0.5-meter Contour lines, and 1-meter first and last return pool-wide Hillshade images.


Illinois Counties

Cook County
2008 data acquired by Merrick
 
DeKalb County
2009 data acquired by Sanborn Map Company. Contact Bruce Hamilton and review the DeKalb County Information Release form to get data from DeKalb County GIS.
 
Macon County
Macon County GIS Department
 
McClean County
2006 data acquired by Pinnacle Mapping Technologies, Inc.. Contact McClean County Regional GIS Consortium, LidarData.com
 
Madison County
2009 data acquired by Surdex for supplemental processing of Orthoimagery, contact Madison County GIS.
 
St. Clair County
2007 data acquisition for St. Louis, Missouri included a small portion of St. Clair County. LidarData.com
 
Wabash, White, and Edwards Counties
2006 data acquisition for Gibson County, Indiana included small portion of Wabash, White, and Edwards Counties. LidarData.com

Data Delivery: Ready for Distribution, Not Yet On-Line

You may submit an ISGS Help Request Form to receive any county by mail.

by IDOT District 4: (Spring, 2012 data acquired by Aerometric)
Henderson, Fulton, Knox, Marshall, Mercer, McDonough, Peoria, Putnam, Stark, Tazewell, Warren, Woodford
Henderson (2012)
DAT files: 36.5 GB; 3,046 files
DGN files: 30.2 GB; 3,046 files
TIN files: 95.9 GB; 3,039 files
LAS files: 58.5 GB; 3,046 files
Total: 221 GB
Fulton (2012)
DAT files: 72.3 GB; 6,548 files
DGN files: 59.6 GB; 6,548 files
TIN files: 192 GB; 6,521 files
LAS files: 119 GB; 6,548 files
Total: 444 GB
Knox (2012)
DAT files: 63.6 GB; 5,414 files
DGN files: 51.3 GB; 5,414 files
TIN files: 169 GB; 5,414 files
LAS files: 90.5 GB; 5,414 files
Total: 374 GB
Marshall (2012)
DAT files: 34.6 GB; 3,112 files
DGN files: 27.7 GB; 3,112 files
TIN files: 92.3 GB; 3,100 files
LAS files: 48.2 GB; 3,112 files
Total: 203 GB
Mercer (2012)
DAT files: 51.3 GB; 4,208 files
DGN files: 42.6 GB; 4,208 files
TIN files: 136 GB; 4,207 files
LAS files: 76.5 GB; 4,208 files
Total: 307 GB
McDonough (2012)
DAT files: 52.0 GB; 4,399 files
DGN files: 43.3 GB; 4,399 files
TIN files: 138 GB; 4,399 files
LAS files: 74.8 GB; 4,399 files
Total: 308 GB
Peoria (2012)
DAT files: 51.2 GB; 4,857 files
DGN files: 41.9 GB; 4,857 files
TIN files: 136 GB; 4,794 files
LAS files: 84.4 GB; 4,857 files
Total: 314 GB
Putnam (2012)
DAT files: 13.7 GB; 1,370 files
DGN files: 11.0 GB; 1,370 files
TIN files: 36.6 GB; 1,349 files
LAS files: 20.2 GB; 1,370 files
Total: 81.7 GB
Stark (2012)
DAT files: 25.8 GB; 2,217 files
DGN files: 21.0 GB; 2,217 files
TIN files: 68.7 GB; 2,217 files
LAS files: 34.1 GB; 2,217 files
Total: 149 GB
Tazewell (2012)
DAT files: 55.0 GB; 4,935 files
DGN files: 44.8 GB; 4,935 files
TIN files: 146 GB; 4,917 files
LAS files: 82.9 GB; 4,935 files
Total: 328.7 GB
Warren (2012)
DAT files: 50.0 GB; 4,186 files
DGN files: 42.1 GB; 4,187 files
TIN files: 133 GB; 4,186 files
LAS files: 66.0 GB; 4,186 files
Total: 291 GB
Woodford (2012)
DAT files: 45.2 GB; 4,131 files
DGN files: 36.2 GB; 4,131 files
TIN files: 120 GB; 4,066 files
LAS files: 62.8 GB; 4,131 files
Total: 264 GB
 
by IDOT District 5: (Spring and Fall, 2012 data acquired by Aerometric)
DeWitt, Douglas, Edgar, McLean, Piatt, Vermilion
Dewitt (2012)
DAT files: - 51.5 GB; 3,098 files
DGN files: - 39.8 GB; 3,098 files
TIN files: - 141 GB; 3,094 files
LAS files: - 95.6 GB; 3,098 files
Total: 327.9 GB
Douglas (2012)
DAT files: - 59.4 GB; 3,183 files
DGN files: - 45.3 GB; 3,183 files
TIN files: - 160 GB; 3,183 files
LAS files: - 92.5 GB; 3,183 files
Total: 357.2 GB
Edgar (2012)
DAT files: 90.1 GB; 4,684 files
DGN files: 69.7 GB; 4,684 files
TIN files: 236 GB; 4,684 files
LAS files: 119 GB; 4,684 files
Total: 514.8 GB
McLean (2012)
DAT files: - 154 GB; 8,807 files
DGN files: - 120 GB; 8,807 files
TIN files: - 423 GB; 8,807 files
LAS files: - 270 GB; 8,807 files
Total: 967 GB
Piatt (2012)
DAT files: - 67.1 GB; 3,406 files
DGN files: - 51.8 GB; 3,406 files
TIN files: - 104 GB; 3,406 files
LAS files: - 182 GB; 3,406 files
Total: 404.9 GB
Vermilion (2012)
DAT files: 132 GB; 6,790 files
DGN files: 105 GB; 6,790 files
TIN files: 353 GB; 6,790 files
LAS files: 166 GB; 6,790 files
Total: 756 GB
 
by IDOT, District 6: (2009 data acquired by Sanborn Map Company)
 
Adams (2009)
DAT files: 42.3 GB; 5,032 files
DGN files: 30.9 GB; 5,032 files
TIN files: 112 GB; 5,032 files
LAS files: 133 GB; 6,426 files
Total: 319 GB
 
by IDOT District 7: (Spring, 2011 data acquired by Aerometric)
Clark, Clay, Coles, Crawford, Cumberland, Edwards, Effingham, Fayette, Jasper, Lawrence, Macon, Moultrie, Richland, Shelby, Wabash, Wayne
Clark (2012)
Breaklines files: 2.62 MB; 1 file
DAT files: 41.5 GB; 3,864 files
DGN files: 32.7 GB; 3,864 files
TIN files: 113 GB; 3,864 files
LAS files: 63.4 GB; 3,864 files
Total: 250 GB
Clay (2012)
Breaklines files: 2.50 MB; 1 file
DAT files: 38.6 GB; 3,628 files
DGN files: 30.8 GB; 3,628 files
TIN files: 108 GB; 3,628 files
LAS files: 61.2 GB; 3,628 files
Total: 239 GB
Coles (2012)
Breaklines files: 1.70 MB; 1 file
DAT files: 34.7 GB; 3,994 files
DGN files: 25.4 GB; 3,994 files
TIN files: 93.9 GB; 3,993 files
LAS files: 59.8 GB; 3,994 files
Total: 214 GB
Crawford (2012)
Breaklines files: 3.74 MB; 1 file
DAT files: 36.8 GB; 3,512 files
DGN files: 29.6 GB; 3,512 files
TIN files: 100 GB; 3,512 files
LAS files: 59.8 GB; 3,512 files
Total: 227 GB
Cumberland (2012)
Breaklines files: none
DAT files: 28.6 GB; 2,734 files
DGN files: 22.3 GB; 2,734 files
TIN files: 79.5 GB; 2,734 files
LAS files: 42.4 GB; 2,734 files
Total: 173 GB
Edwards (2012)
Breaklines files: 976 KB; 1 file
DAT files: 20.5 GB; 1,826 files
DGN files: 16.1 GB; 1,826 files
TIN files: 56.2 GB; 1,826 files
LAS files: 30.6 GB; 1,826 files
Total: 123 GB
Effingham (2012)
Breaklines files: 2.77 MB; 1 file
DAT files: 39.7 GB; 3,740 files
DGN files: 31.8 GB; 3,740 files
TIN files: 112 GB; 3,740 files
LAS files: 61.8 GB; 3,742 files
Total: 245 GB
Fayette (2012)
Breaklines files: 4.39 MB; 1 file
DAT files: 58.3 GB; 5,458 files
DGN files: 46.7 GB; 5,458 files
TIN files: 164 GB; 5,430 files
LAS files: 92.6 GB; 5,458 files
Total: 362 GB
Jasper (2012)
Breaklines files: 3.00 MB; 1 file
DAT files: 40.3 GB; 3,828 files
DGN files: 31.5 GB; 3,828 files
TIN files: 111 GB; 3,828 files
LAS files: 60.1 GB; 3,828 files
Total: 243 GB
Lawrence (2012)
Breaklines files: 1.87 MB; 1 file
DAT files: 27.8 GB; 2,901 files
DGN files: 22.1 GB; 2,902 files
TIN files: 76.2 GB; 2,901 files
LAS files: 47.4 GB; 3,901 files
Total: 173 GB
Macon (2012)
Breaklines files: 1.01 MB; 1 file
DAT files: 36.2 GB; 4.374 files
DGN files: 29.3 GB; 4,374 files
TIN files: 99.2 GB; 4,374 files
LAS files: 63.0 GB; 4,374 files
Total: 227 GB
Moultrie (2012)
Breaklines files: 925 KB; 1 file
DAT files: 23.5 GB; 2,800 files
DGN files: 17.9 GB; 2,801 files
TIN files: 64.4 GB; 2,799 files
LAS files: 40.0 GB; 2,800 files
Total: 146 GB
Richland (2012)
Breaklines files: 2.20 MB; 1 file
DAT files: 35.5 GB; 3,085 files
DGN files: 27.8 GB; 3,086 files
TIN files: 97.5 GB; 3,085 files
LAS files: 50.0 GB; 3,085 files
Total: 211 GB
Shelby (2012)
Breaklines files: none
DAT files: 59.8 GB; 5,787 files
DGN files: 46.7 GB; 5,787 files
TIN files: 166 GB; 5,787 files
LAS files: 87.8 GB; 5,787 files
Total: 361 GB
Wabash (2012)
Breaklines files: 1.98 MB; 2 file
DAT files: 21.3 GB; 1,963 files
DGN files: 17.0 GB; 1,963 files
TIN files: 58.6 GB; 1,963 files
LAS files: 31.5 GB; 1,963 files
Total: 128 GB
Wayne (2012)
Breaklines files: 2.14 MB; 1 file
DAT files: 58.1 GB; 5,271 files
DGN files: 46.0 GB; 5,271 files
TIN files: 163 GB; 5,271 files
LAS files: 87.6 GB; 5,271 files
Total: 354 GB
   
 
by IDOT District 8:
Alton Connector project in Madison County
(Spring, 2011 data acquired by Aerometric)
DAT files: 3.8GB; 45 Files
DGN files: 3.0 GB; 45 files
TIN files: 45 files 10.4 GB
Classified LAS files: 10.4GB; 45 files
First Return XYZI files: 2.7GB; 45 files
Bare Earth LAS files: 3.0GB; 45 files
Bare Earth XYZI files: 3.8GB; 45 files
 
by ILHMP: (Spring, 2012 data acquired by Merrick)
Monroe, Randolph, St. Clair Counties
Monroe (2012)
Classified LAS files: 44.0 GB; 510 files
Bare Earth XYZI files: 34.5 GB; 510 files
Bare Earth GRID files: 4.84 GB; 4,590 files
Bare Earth img files: 4.89 GB; 1,020 files
First Return XYZI files: 41.7 GB; 510 files
First Return GRID files: 4.83 GB; 4,598 files
First Return img files: 4.89 GB; 1,020 files
Total: 139.65 GB
Randolph (2012)
Classified LAS files: 70.2 GB; 803 files
Bare Earth XYZI files: 58.3 GB; 803 files
Bare Earth GRID files: 7.61 GB; 7,227 files
Bare Earth img files: 7.70 GB; 1,606 files
First Return XYZI files: 67.5 GB; 803 files
First Return GRID files: 7.61 GB; 7,227 files
First Return img files: 7.70 GB; 1,606 files
Total: 226.62 GB
St. Clair (2012)
Classified LAS files: 66.1 GB; 785 files
Bare Earth XYZI files: 54.6 GB; 785 files
Bare Earth GRID files: 7.44 GB; 15,459 files
Bare Earth img files: 7.52 GB; 1,570 files
First Return XYZI files:66.1 GB; 785 files
First Return GRID files: 7.45 GB; 15,463 files
First Return img files: 7.34 GB; 1,532 files
Total: 216.55 GB
 
by County
Lake (2007 data acquired by Merrick; processed in 2010)
LAS files: 41.5 GB; 494 files
TIN files: 61.1 GB; 5,429 files
 
by FEMA
Piatt (2011 data acquired by PhotoScience)
DAT files: - 51.2 GB; 4,857 files
DGN files: - 41.9 GB; 4,857 files
TIN files: - 136 GB; 4,794 files
LAS files: - 84.4 GB; 4,857 files
Total: 313.5 GB
 
A portion of Sangamon and Christian Counties along the county boundary for Sangamon River by (2011 data acquired by Woolpert)
 
Saline and Wabash watersheds including: Hamilton, Gallatin, Saline, White, Williamson, and portions of Hardin, Johnson, and Pope. (2011 data acquired by Woolpert)

Data Delivery: Undergoing Archival Procedures

by IDOT, USACE, and USGS (2010 and 2011 data acquired by Western Airmaps)
Alexander, Calhoun, Jersey, Union Counties
Mississippi River Floodplain, bluff to bluff
Illinois River Floodplain, bluff to bluff
 
by IDOT District 9 (partial): (Fall, 2011 data acquired by Merrick)
Johnson (partial), Massac, Pulaski Counties
 
by Jefferson County (2012 data acquired by Sidwell)
Jefferson County
LAS files: 37.1 GB; 632 files

Data Delivery: Anticipated, Data Acquired

by NRCS: (Fall 2013 data by Quantum Spatial)
Logan County

Data Delivery: Anticipated, Data Not Yet Acquired

by ISGS (2014 by Quantum Spatial)
Hardin and Pope Counties
 
by ISGS and IDNR: (2014 by Quantum Spatial)
Madison County
 
by ISGS and IDNR: (2014 by Surdex)
Franklin, Jackson, and Perry Counties
 
by ISGS and Kankakee and Will Counties: (2014 by Quantum Spatial)
Kankakee, Will Counties