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1  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

2  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

3  Cook 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.  

4  Cook County Orthophotography Data 1998-1999

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

5  Cook County Orthophotography Data 2005

Chicago Urban Area orthoimagery data with Universal Transverse Mercator (UTM) projection.  

6  Cook 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  De Kalb 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  De Kalb County Orthophotography Data 1998-1999

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

9  De Kalb County Orthophotography Data 2005

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

10  De Kalb 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  Du Page 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.  

12  DuPage 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.  

13  Dupage County Orthophotography Data 1998-1999

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

14  Dupage County Orthophotography Data 2005

Chicago Urban Area orthoimagery data with Universal Transverse Mercator (UTM) projection.  

15  Elevation in the Illinois River Watershed

Thematic map showing elevation changes in the basin.

Download Options: LoRes preview | HiRes (1.76 MB) | Metadata

16  Floodzones in the Illinois River Watershed

Thematic map showing the 100 and 500 year floodzones across the basin as of 1986.

Download Options: LoRes preview | HiRes (3.77 MB) | Metadata

17  Fox River Tributary Watersheds and Subwatersheds

Fox River Tributary watersheds and subwatersheds (62 individual shapefiles) created through BASINS automatic delineation, as part of the Fox River Watershed Investigation (shapefile, .zip archive). Note - To download individual shapefiles, visit the Fox River Tributary Watershed GIS Page: http://ilrdss.sws.uiuc.edu/fox/tributaries_gis.aspx

18  Fox Watershed - Ambient Water Quality Monitoring Network (AWQMN)

The Ambient Water Quality Monitoring Network is managed by the Illinois Environmental Protection Agency. This data set shows locations of all fixed monitoring sites in the Fox Watershed. This data is a sub-set of a state-wide data set. Data set was generated from location data created by the IEPA (in latitude/longitude, decimal degree format). (shapefile, .zip archive)  

19  Fox Watershed - Boundary

This geospatial dataset is the Fox watershed boundary derived from the Illinois HUC12 (ilhuc12geo83) hydrologic unit boundary layer which was developed by delineating the boundary lines on 1:24,000 base maps and digitizing the delineated lines. Digital Elevation Model data may have been used in part of the process to establish preliminary boundaries. (shapefile, .zip archive)  

20  Fox Watershed - Census blocks (2000, 2002)

U.S. Block Groups represents the Census block groups clipped to the Fox watershed boundary derived from the Illinois HUC12 (ilhuc12geo83) hydrologic unit boundary layer which was developed by delineating the boundary lines on 1:24,000 base maps. (shapefile, .zip archive)  

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