Download In State Plane Projection Here. Boundaries of designated high quality ADID wetlands established as a result of a formal process under the direction of the U.S. Environmental Protection Agency. Part 404(b)(1) of the Clean Water Act authorizes the USEPA and the US Army Corps of Engineers to identify in advance of specific permit requests aquatic sites which will be considered as areas generally unsuitable for disposal of dredged or fill material. This process is called an Advanced Identification or ADID. Under the ADID process identification of an area as generally unsuitable for fill does not prohibit applications for permits to fill in these areas. Therefore the ADID designation of unsuitability is advisory not regulatory. An ADID designation lets a potential applicant know in advance that a proposal to fill such a site is not likely to be consistent with the 404(b)(1) guidelines, and the USEPA will probably request permit denial. ADID wetland information is also useful in watershed planning, land use planning, public land acquisition programs, natural resource studies and other purposes. The wetland selection criteria and methodology are documented in the publication entitled "Advanced Identification (ADID) Study, Lake County, Illinois. Final Report, November 1992" which is included in this download. Boundaries were delineated by the ADID project team on orthophotograph background with an intended usage scale of 1" = 400', a scale ratio of 1:4800.

Non-Motorized infrastructure within public spaces in Kankakee County, Illinois. Features are categorized by facility type. Features were created by referencing the 2020 ortho image of Kankakee County (Will County (2019) for areas in Kankakee River State Park) and GPS points collected for features newer than the ortho image. The presence of marked or unmarked crosswalks in this dataset is not intended to be used for the purposes of safety or suitability for crossing a road.

These datasets contain modeling files and GIS data associated with a risk assessment study for the Cambrian-Ordovician sandstone aquifer system in Illinois from predevelopment (1863) to the year 2070. Modeling work was completed using the Illinois Groundwater Flow Model, a regional MODFLOW model developed for water supply planning in Illinois, as a base model. The model is run using the graphical user interface Groundwater Vistas 7.0. The development and technical details of the base Illinois Groundwater Flow Model, including hydraulic property zonation, boundary conditions, hydrostratigraphy, solver settings, and discretization, are described in Abrams et al. (2018). Modifications to this base model (the version presented here) are described in Mannix et al. (2018), Hadley et al. (2020) and Abrams and Cullen (2020). Modifications include removal of particular multi-aquifer wells to improve calibration, changing Sandwich Fault Zone properties to achieve calibration at production wells within and near the fault zone, and the incorporation of demand scenarios based on a participatory modeling project with the Southwest Water Planning Group. The zipped folder of model files contains MODFLOW input (package) files, Groundwater Vistas files, and a head file for the entire model run. The zipped folder of GIS data contains rasters of: simulated drawdown in the St. Peter sandstone from predevelopment to 2018, simulated drawdown in the Ironton-Galesville sandstone from predevelopment to 2018, simulated head difference between the St. Peter and Ironton-Galesville sandstone units in 2018, simulated head above the top of the St. Peter sandstone for the years 2029, 2050, and 2070, and simulated head above the top of the Ironton-Galesville sandstone for the years 2029, 2050, and 2070. Raster outputs were derived directly from the simulated heads in the Illinois Groundwater Flow Model. Rasters are clipped to the 8 county northeastern Illinois region (Cook, DuPage, Grundy, Kane, Kendall, Lake, McHenry, and Will counties). Well names, historic and current head targets, and spatial offsets for the Illinois Groundwater Flow Model are available upon request via a data license agreement. Please contact authors to set this up if needed.

Non-Motorized infrastructure polygons (sidewalks, shared paths, etc.) within public spaces in Kankakee County, Illinois. Features are categorized by facility type. Features were created by referencing the 2020 ortho image of Kankakee County (Will County (2019) for areas in Kankakee River State Park) and GPS points collected for features newer than the ortho image. Sidewalks at Bishop McNamara High School are included. Portions of Kankakee River State Park have not been included. This includes areas south of the Kankakee River and some areas in Will County.For locations where a sidewalk and driveway intersected, features such as concrete or asphalt driveways and alleys were determined based on interpretation of the ortho image. Where it appeared that a sidewalk cut through a driveway or similar feature, the feature was categorized as sidewalk. If the driveway or similar feature appeared to cut through the sidewalk, the feature was categorized a driveway, alley, etc.The category for "Marked Crosswalks" is used for areas where pavement markings delineating a crosswalk was observed in the ortho image. The features in the dataset are generally representative of the areas from the end of each sidewalk on either side of a road and do not necessarily represent of the location of the markings on the pavement in the ortho imageThe category for "Unmarked Crosswalks" is interpreted as an unmarked area of a road typically at intersections, that has sidewalks approaching from both sides of the street, but does not have pavement markings delineating a crosswalk observable in the ortho image.The presence of marked or unmarked crosswalks in this dataset in not intended to be used for the purposes of safety or suitability for crossing a road.Feature widths were generated using centerline transects distributed along the length of each feature and are intended to be used as estimates. Feature widths were not derived from any engineering plans or field measurements.

Lake County’s Ethics & Oversight Committee will be responsible for administering the complaint review process and making a recommendation to the County Board on what actions, if any, should be taken. Learn more about the complaint handling procedures.

2015 Land Use Inventory:This file is a digital geospatial Environmental Systems Research Institute (ESRI) ArcGIS version 10.x File Geodatabase Polygon Feature Class representing land use in the seven northeastern Illinois counties (Cook, DuPage, Kane, Kendall, Lake, McHenry and Will). Land use is identified to nearly 60 categories, and was created using county parcel GIS boundaries and Assessor data, along with color orthorectificed aerial photography captured in the spring of 2015. Land uses were assigned to parcels using a combination of automated and manual techniques, using a variety of reference data sets for land use identification and validation. This dataset is considered an update of the 2013 parcel-based Land Use Inventory, and the primary focus was on parcels whose assessment records or geometry had changed between 2013 - 2015, suggesting a change in land use. Parcels were then dissolved on common land uses (to the limits of PLS sections or assessor blocks); polygons were generated for “non-parcel” (water, right-of-way) areas and classified using automated processes, and extensive topological cleaning was necessary to minimize gap/overlap issues. NOTE: Land use polygons are based on county parcel boundaries; special care must be exercised when comparing these data to earlier (2005, 2001, 1990) Inventories, which relied on manual drafting of land use boundaries that would extend to road centerlines.Supporting documentation for CMAP's 2015 Land Use Inventory:2015 Land Use Inventory Classification Scheme: full description of all land use categories2015 Land Use Inventory Geodatabase Schema: description of LUI attributes and domains2015 Land Use Inventory MetadataLANDUSE lookup .csv table to support shapefile downloads.See also the Land Use Inventory page on the CMAP website.

This data layer is a digital, geospatial ArcGIS 10.x shapefile of Facility Planning Area (FPA) boundaries in the greater northeastern Illinois area through April 1, 2014. This area includes seven counties of Illinois, including Cook, DuPage, Kane, Kendall, Lake, McHenry, Will along with parts of Grundy and Dekalb. A Facility Planning Area is defined as "a centralized sewer service area to be considered for possible wastewater treatment facilities within a 20-year planning period." These areas also include the treatment cells, storage area, and land application area for the treated wastewater.This file was originally digitized directly into an Illinois State Plane, East Zone, coordinate system with ground coordinates stored in double precision and expressed in U.S. Survey Feet. The dataset is projected using the Transverse Mercator map projection, NAD 1983. Attributes developed for this dataset include the name of the FPA, the parent and sub-FPA names (where applicable), the type of FPA as well as whether or not the FPA is a part of a service agreement area . This dataset is only intended to approximate FPA boundaries. Positional accuracy of the FPA boundaries is no better than that of the source material, as drafted to 1:24,000-scale USGS 7.5 minute quadrangle maps. Legal descriptions must be reviewed for precise boundary locations.

The following dataset includes "Active Benchmarks," which are provided to facilitate the identification of City-managed standard benchmarks. Standard benchmarks are for public and private use in establishing a point in space. Note: The benchmarks are referenced to the Chicago City Datum = 0.00, (CCD = 579.88 feet above mean tide New York). The City of Chicago Department of Water Management’s (DWM) Topographic Benchmark is the source of the benchmark information contained in this online database. The information contained in the index card system was compiled by scanning the original cards, then transcribing some of this information to prepare a table and map. Over time, the DWM will contract services to field verify the data and update the index card system and this online database.This dataset was last updated September 2011. Coordinates are estimated. To view map, go to https://data.cityofchicago.org/Buildings/Elevation-Benchmarks-Map/kmt9-pg57 or for PDF map, go to http://cityofchicago.org/content/dam/city/depts/water/supp_info/Benchmarks/BMMap.pdf. Please read the Terms of Use: http://www.cityofchicago.org/city/en/narr/foia/data_disclaimer.html.

Created for all users to view and understand State Senate District boundaries within Cook County, Illinois. The Illinois State Senate Districts will be effective on January 11, 2023 and are based on the 2020 Census.The Illinois State Senate Districts were received from the Illinois State Board of Elections via download on Jan. 21, 2022 from the following webpage: https://www.elections.il.gov/agencyforms/Redistricting%202022%20Shape%20Files/Cook County GIS projected the data in the local datum: NAD 1983 StatePlane Illinois East FIPS 1201 (US Feet). Cook County GIS also trimmed the districts using the Cook County boundary to only show the districts within the border of Cook County.

Created for all users to view and understand State Representative District boundaries within Cook County, Illinois. The Illinois State Representative Districts will be effective on January 11, 2023 and are based on the 2020 Census.The Illinois State Representative Districts were received from the Illinois State Board of Elections via download on Jan. 21, 2022 from the following webpage: https://www.elections.il.gov/agencyforms/Redistricting%202022%20Shape%20Files/Cook County GIS projected the data in the local datum: NAD 1983 StatePlane Illinois East FIPS 1201 (US Feet). Cook County GIS also trimmed the districts using the Cook County boundary to only show the districts within the border of Cook County.

Created for all users to view and understand Congressional District boundaries within Cook County, Illinois. The Congressional Districts will be effective on January 11, 2023 and are based on the 2020 Census. Congressional Districts are federal districts represented by the United States House of Representatives.The Congressional Districts were received from the Illinois State Board of Elections via download on Jan. 21, 2022 from the following webpage: https://www.elections.il.gov/agencyforms/Redistricting%202022%20Shape%20Files/Cook County GIS projected the data in the local datum: NAD 1983 StatePlane Illinois East FIPS 1201 (US Feet). Cook County GIS also trimmed the districts using the Cook County boundary to only show the districts within the border of Cook County.