Watershed Integrity MethodologySee also: https://www.cmap.illinois.gov/2050/maps/watershed

This geodatabase serves two purposes: 1) to provide State of Illinois agencies with a fast resource for the preparation of maps and figures that require the use of shape or line files from federal agencies, the State of Illinois, or the City of Chicago, and 2) as a start for social scientists interested in exploring how geographic information systems (whether this is data visualization or geographically weighted regression) can bring new meaning to the interpretation of their data. All layer files included are relevant to the State of Illinois. Sources for this geodatabase include the U.S. Census Bureau, U.S. Geological Survey, City of Chicago, Chicago Public Schools, Chicago Transit Authority, Regional Transportation Authority, and Bureau of Transportation Statistics.

This is a hosted feature layer of Illinois County boundaries.

Web viewer app of the individual web map for the 2020 Land Use Inventory.

A Metropolitan Planning Organization (MPO) is a transportation policy-making organization composed of representatives from local governments and transportation implementers. The 1962 Federal-Aid Highway Act required the formation of an MPO for all urbanized areas with a population greater than 50,000. MPO's were established to ensure that existing and future expenditures for transportation projects and programs were based on a comprehensive, cooperative, and continuing (3-C) planning process. Federal funding for transportation projects and programs are channeled through this planning process.This is created from IDOT source.

This Web Map serves as the data backbone for the Illinois Public Broadband Map Experience Builder, providing real-time broadband coverage, funding, and infrastructure project data. Developed for the Illinois Department of Commerce's Office of Broadband, this map integrates key broadband datasets to support public access, transparency, and decision-making.The Web Map contains interactive layers displaying broadband service availability, grant-funded projects, provider coverage areas, and funding eligibility, ensuring that users can explore and analyze broadband accessibility across Illinois.Important Links:Illinois Broadband Map (Experience Builder)Illinois Broadband Hub SiteKey Layers & Features:Broadband Coverage Data – Displays areas classified as unserved, underserved, and served based on broadband speed benchmarks.Connect Illinois Grant Projects – Highlights grant-funded broadband expansion initiatives across the state.Provider Service Areas – Maps Internet Service Providers’ (ISPs) coverage footprints and service availability.Public Query & Filtering Tools – Enables users to search by location, provider, or funding type to analyze broadband access.Community Anchor Institutions (CAIs) – Identifies schools, libraries, healthcare facilities, and government buildings critical for broadband expansion.Basemap Integration – Provides a custom basemap configuration for enhanced visualization of broadband data.Usage & Integration:Supports the Experience Builder: Required for the Illinois Public Broadband Map ExB, ensuring interactive functionality.Public & Agency Access: Designed for Illinois residents, local governments, ISPs, and policymakers to explore broadband service and funding opportunities.Broadband Expansion Strategy: Aligns with state and federal funding initiatives, including BEAD and Connect Illinois grants.Data-Driven Decision Making: Provides an authoritative source for broadband planning and transparency.Change Log:8/23/2024 – Final widget configurations completed in the Experience Builder; Web Map adjusted for compatibility.8/19/2024 – Updated Connect Illinois Grant Round layers with latest funding allocations.8/8/2024 – Query and search tools refined for enhanced usability.8/2/2024 – First draft of layers and data structure implemented.7/22/2024 – Layer optimization to improve performance and accessibility.7/11/2024 – Web Map created in the New Map Viewer to power the Experience Builder application.Important Links:📍 Illinois Public Broadband Map Experience Builder – Interactive public broadband mapping application.🌐 Illinois Broadband Hub Site – Access state broadband policies, grant programs, and mapping tools.Access & Contact:Contact: Illinois Office of Broadband | 📧 broadband@illinois.govMore Info: Illinois Broadband Program WebsiteThis Web Map powers the Illinois Public Broadband Map Experience Builder, providing a reliable and interactive resource for exploring broadband service availability and funding opportunities across the state.

The FTR includes improvements made to both the state and local highway systems, details the status of each project in the related annual program and lists projects added to the program and award in addition to the original set of projects. The Proposed Improvements for Illinois Highways is the published annual program showing the projects IDOT planned to implement during the fiscal year.The FTR includes improvements made to both the state and local highway systems, details the status of each project in the related annual program and lists projects added to the program and award in addition to the original set of projects.

This digital data release presents contour data from multiple subsurface geologic horizons as presented in previously published summaries of the regional subsurface configuration of the Michigan and Illinois Basins. The original maps that served as the source of the digital data within this geodatabase are from the Geological Society of America’s Decade of North American Geology project series, “The Geology of North America” volume D-2, chapter 13 “The Michigan Basin” and chapter 14 “Illinois Basin Region”. Contour maps in the original published chapters were generated from geophysical well logs (generally gamma-ray) and adapted from previously published contour maps. The published contour maps illustrated the distribution sedimentary strata within the Illinois and Michigan Basin in the context of the broad 1st order supercycles of L.L. Sloss including the Sauk, Tippecanoe, Kaskaskia, Absaroka, Zuni, and Tejas supersequences. Because these maps represent time-transgressive surfaces, contours frequently delineate the composite of multiple named sedimentary formations at once. Structure contour maps on the top of the Precambrian basement surface in both the Michigan and Illinois basins illustrate the general structural geometry which undergirds the sedimentary cover. Isopach maps of the Sauk 2 and 3, Tippecanoe 1 and 2, Kaskaskia 1 and 2, Absaroka, and Zuni sequences illustrate the broad distribution of sedimentary units in the Michigan Basin, as do isopach maps of the Sauk, Upper Sauk, Tippecanoe 1 and 2, Lower Kaskaskia 1, Upper Kaskaskia 1-Lower Kaskaskia 2, Kaskaskia 2, and Absaroka supersequences in the Illinois Basins. Isopach contours and structure contours were formatted and attributed as GIS data sets for use in digital form as part of U.S. Geological Survey’s ongoing effort to inventory, catalog, and release subsurface geologic data in geospatial form. This effort is part of a broad directive to develop 2D and 3D geologic information at detailed, national, and continental scales. This data approximates, but does not strictly follow the USGS National Cooperative Geologic Mapping Program's GeMS data structure schema for geologic maps. Structure contour lines and isopach contours for each supersequence are stored within separate “IsoValueLine” feature classes. These are distributed within a geographic information system geodatabase and are also saved as shapefiles. Contour data is provided in both feet and meters to maintain consistency with the original publication and for ease of use. Nonspatial tables define the data sources used, define terms used in the dataset, and describe the geologic units referenced herein. A tabular data dictionary describes the entity and attribute information for all attributes of the geospatial data and accompanying nonspatial tables.

Download In State Plane Projection Here The Lake County Wetland Inventory (LCWI) maps natural and artificial wetlands meeting definitions established by the federal agencies who work with the Lake County Geographic Information System staff to periodically review and update it. These agencies include the United States Environmental Protection Agency, the U.S. Fish and Wildlife Service, the USDA Natural Resources Conservation Service and the United States Army Corps of Engineers. The 1989 federal wetland delineation standards for offsite wetland mapping are used. This data was last published in March of 1993. This update includes changes to the previous version of LCWI including: adjust current wetland boundaries to omit development, including roads; to fine tune boundary placement where that was intended by the original delineation, in some cases, adjust the wetland to photographic features / signature; delete wetlands which the committee decided were mapped in error - for example, trees which were mistaken for wet areas; create polygons for newly delineated artificial wetlands; and newly delineated wetlands or farmed wetlands caused by the continued deterioration of the agricultural drain tile system and increased runoff due to urbanization. The LCWI is a useful tool for general planning and review purposes, but it does not take the place of an on-site delineation by a certified wetland specialist. High resolution (1" = 100') orthorectified aerial imagery captured in April 2002 was used as the base for this update. Other data used as reference for this update include: 2004 SOIL SURVEY GEOGRAPHIC (SSURGO) DATABASE FOR LAKE COUNTY, IL - U.S. Department of Agriculture, Natural Resources Conservation Service; HYDROLOGY2002 - Lake County GIS/Map Division; 2' topography (CONTOURS) - Lake County GIS/Map Division; and various years of historical aerial photography for clarification. By using the more recent higher resolution photography, the resulting updated wetland boundaries are more accurate then the original boundaries published in 1993.

Metadata: Sidewalk Inventory Metadata

This layer is a component of Lake County, Illinois Boundary data layers.

© Lake County, Illinois GIS/Mapping Division

Lake County's most comprehensive interactive web mapping application and GIS data viewer. View data, run analysis tools, and create PDF documents all inside Maps Online!

County Coal Data and MapsThe Coal Resource Maps include structural elevation, depth, thickness, sulfur, and chlorine maps of the Colchester, Danville, Davis, Dekoven, Herrin, Jamestown, Seelyville, and Springfield Coals. The Coal Mine Maps are maps compiled by the ISGS of known mines: underground and surface coal mines as well as underground industrial mines. Buffer regions for industrial mineral underground mines were incorporated into the maps due to limited information regarding these mines. The size of the buffer region is dependent on the uncertainty or inaccuracy of the mine location based on the quality of the source material. For more information regarding industrial mines please contact the ISGS Industrial Minerals Section. The accompanying coal mine directory for each county provides basic information about the coal mines. Coal has been mined in 77 counties in Illinois and more than 7,400 coal mines have operated since commercial mining began in 1810. Our maps of known mines for each of these counties may help the public to identify mined areas. Please note, however, that the accuracy and completeness of the mine maps and directories vary depending on the availability and quality of source material. Little or no information is available for many mines, especially the older ones, because mining activity was not regulated or documented until the late 1800's. Even then, reporting requirements were minimal. In cooperation with the Illinois State Geological Survey, the Office of Mines and Minerals (a division of the Department of Natural Resources) is in search of old underground mine maps of Illinois. Many of the undocumented maps are believed to be in libraries, historical societies and personal files of old mine employees. The Department asks that anyone who knows of one of these maps, please contact the Department at (618) 650-3197 or by emailing brent.guttmann@illinois.gov(link sends e-mail). A map specialist will come to your location, if you wish. Otherwise maps can be mailed, or you may stop by one of our offices in Edwardsville, Springfield, Ottawa, or Benton. These maps will be checked against our existing inventory. If found to be a new discovery, they will be electronically imaged and returned to the owner (if requested). The Coal Logs are non-confidential coal log descriptions from the Coal Section's stratigraphic database located in the county. These are part of the basis for the coal resource maps. NOTE: A 1:100,000 scale county mine map with directory is available for purchase and can be ordered by contacting the ISGS at (217) 244-2414, or email at sales@prairie.illinois.edu(link sends e-mail). A 1:24,000 scale color plot version of each available quadrangle with directory is also available for purchase. The County Coal Resource maps have been supported, in part, by the contract Maintenance of Coal Resource and Mine Data from the Illinois Department of Natural Resources, Office of Mines and Minerals. Note: These maps are made available at this time in draft form only. They have not yet been reviewed to the normal standards of the Illinois State Geological Survey (ISGS) review process. They are made available in this manner as an "open file" in order to deliver products to our customers as fast as possible and to meet particular needs that we have encountered in public requests for this information. These maps are PDF files, requiring Adobe Acrobat™ for viewing. (Download Acrobat).

Illinois US Congressional Boundaries. Updated boundary on 1/21/2022 from https://elections.il.gov/shape/Legislative officials updated on 1/19/2023

A Bell 407 helicopter with a gyro-stabilized gimbal was used to collect aerial videos of Illinois River Water Science Basin (IWS) riverine study sites in 2022. Videos were collected using both natural color and thermal infrared cameras. These videos were used to determine the feasibility of estimating river surface velocity using aerial imagery. Photogrammetry techniques were used with the natural color video images to produce an orthomosaic map of the study reach.

Drinking Water Source MethodologySee also: https://www.cmap.illinois.gov/2050/maps/drinking-water

All maps, permits, applications and various documents filed with the County Clerk's office from the Illinois Department of Natural Resources regarding mines in Macoupin County.

Download In State Plane Projection Here ** In addition to the Tax Parcel polygons feature class, the hyperlink download above also contains a parcel point data layer ** Parcel boundaries are developed from deeds, plats of subdivision and other legal documents going back to the mid 1800's, following generally accepted practices used in Public Land Survey System states, and following guidelines established by the Illinois Department of Revenue and the International Association of Assessment Officials. Lake County's parcel coverage is based on resolving the accumulated evidence of all of the legal documents surrounding a particular parcel or subdivision, and not the result of a countywide resurvey. These parcel boundaries are intended to be a visual inventory of property for tax and other administrative purposes; they are not intended to be used in place of an on-site survey or for the precise determination of property corners or PLSS features based on GIS coordinates. In Illinois, only a registered professional land surveyor is authorized to determine boundary locations. Included are the tax parcel boundaries, represented as polygons and centroids, for all changes resulting from legal records submitted to the Recorder of Deeds up to December 31st of the preceding year, as well as any court orders, municipal annexations and other transactions which impact the tax parcel boundaries. NOTE: The ONLY attribute included is the Property Index Number, or PARCEL_NUM. Additional assessment attribute data can be downloaded here This parcel layer is used for tax assessment purposes and for a variety of other local government functions. It changes often, both spatially and in its attribution, based on divisions or consolidations, the sale of property and other transactions. Example: PIN 08-17-304-014 can be interpreted as follows: Township 08, Section 17, Block 304, Parcel 014. Note that the first digit of block, "3" in this example, signifies that the parcel lies in quarter section 3. The quarter sections are labeled from 1 through 4, representing the northwest, northeast, southwest and southeast quarter sections, respectively. Update Frequency: This dataset is updated on a weekly basis.

The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the UTM projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.

Appropriate for use in local and regional thematic analysis. Data are not accurate enough to be used as a geodetic or engineering base. Intended to include representation for each Conservation Area.

This data set shows state Conservation Areas in Illinois. Digitized from maps provided by DNR, county plat books, USGS TIGER files, and 1:24,000 quadrangle maps. Boundaries are approximate and do not indicate ownership or property boundaries. The Illinois Department of Conservation Land and Water Report of 30 June 1994 was used as a reference.

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