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1  1993 Mississippi River Flood Hazard Mitigation Grant Program

1993 Mississippi River flood maps that show properties damaged in the event.

2  Adams County Agriculture Imagery DOQ Data 2004

Illinois National Agriculture Imagery Program (NAIP) Digital Orthophotography quarter Quadrangle (DOQ) data in the Universal Transverse Mercator (UTM) coordinate system with a NAD83 datum. NAIP acquires color-infrared digital ortho imagery during the agricultural growing seasons in the continental U.S with a 2 meter ground sample distance.  

3  Adams County Coal Maps

ISGS Coal Map Series. Includes mines, resources, and logs.

4  Adams County Orthophotography Data 1998-1999

Illinois National Aerial Photography Program Digital Orthophotography quarter Quadrangle data for Adams County in the Universal Transverse Mercator (UTM) coordinate system with a NAD83 datum.  

5  Adams County Orthophotography Data 2005

Illinois National Aerial Photography Program Digital Orthophotography quarter Quadrangle (DOQ) data with Universal Transverse Mercator (UTM) projection.  

6  Adams County Soil Data

The Soil Data Mart, maintained by the Natural Resources Conservation Service, provides soil survey geographic data for Illinois counties. Email required to receive data files.  

7  Alexander County Agriculture Imagery DOQ Data 2004

Illinois National Agriculture Imagery Program (NAIP) Digital Orthophotography quarter Quadrangle (DOQ) data in the Universal Transverse Mercator (UTM) coordinate system with a NAD83 datum. NAIP acquires color-infrared digital ortho imagery during the agricultural growing seasons in the continental U.S with a 2 meter ground sample distance.  

8  Alexander County Orthophotography Data 1998-1999

Illinois National Aerial Photography Program Digital Orthophotography quarter Quadrangle data for Alexander County in the Universal Transverse Mercator (UTM) coordinate system with a NAD83 datum.  

9  Alexander County Orthophotography Data 2005

Illinois National Aerial Photography Program Digital Orthophotography quarter Quadrangle (DOQ) data with Universal Transverse Mercator (UTM) projection.  

10  Alexander County Soil Data

The Soil Data Mart, maintained by the Natural Resources Conservation Service, provides soil survey geographic data for Illinois counties. Email required to receive data files.  

11  Ammonia-N Concentrations in the Illinois River Watershed

Thematic map showing the mean total Ammonia-N for each of the major sub-watersheds.

Download Options: LoRes preview | HiRes (624 K) | Metadata

12  Anticlines, Synclines, and Monoclines

Structural features, anticlines, synclines, and monoclines in Illinois. Features depicted are limited to significant anticlines, synclines and monoclines. Names of the features and the geologic horizons (bedrock unit) on which they were mapped are included. GIS data (shapefile)  

13  Archaeological Resource Potential

Areas in Illinois believed to posses a high archaeologic potential. Data developed by the Illinois State Museum and intended for coarse regional analysis. ISM, 1994. GIS data - zipped shapefile  

14  Average soil depth in the Illinois River Watershed

Thematic map showing the average soil depth (inches) across the basin.

Download Options: LoRes preview | HiRes (3.36 MB) | Metadata

15  Bedrock Geology - 1967

Distribution and extent of the bedrock geologic units within Illinois. GIS data (shapefile)  

16  Bedrock Geology - 2005

Distribution and extent of the bedrock geologic units within Illinois. GIS data (shapefile)  

17  Bedrock Topography

Bedrock topography is shown as 50-foot (15-meter) contours of bedrock elevation above mean sea level (msl). GIS data (shapefile)  

18  Bedrock Valleys

Continuous lines representing the lowermost elevations/ locations of (buried) bedrock valleys in the state of Illinois. GIS data (shapefile)  

19  Bond County Agriculture Imagery DOQ Data 2004

Illinois National Agriculture Imagery Program (NAIP) Digital Orthophotography quarter Quadrangle (DOQ) data in the Universal Transverse Mercator (UTM) coordinate system with a NAD83 datum. NAIP acquires color-infrared digital ortho imagery during the agricultural growing seasons in the continental U.S with a 2 meter ground sample distance.  

20  Bond County Coal Maps

ISGS Coal Map Series. Includes mines, resources, and logs.

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | [Next >>]