Illinois State Conservation Areas

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Frequently-anticipated questions:


What does this data set describe?

Title: Illinois State Conservation Areas
Abstract:
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.
Supplemental_Information:
This is edition 20040402 of this feature class. While is has been available on ISGS file systems in coverage form for several years, managing the data as an ArcSDE feature datatset is new as of 2 April 2004. This merits an updated designation. The edition designation is derived from the aforementioned date using FGDC metadata notation.
  1. How should this data set be cited?

    Illinois Department of Natural , Illinois Natural History Survey, 199604, Illinois State Conservation Areas: ISGS GIS Database GISDB.IL_ADMIN_Conservation_Areas_Py, Illinois Natural History Survey, Champaign, Illinois.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -90.802031
    East_Bounding_Coordinate: -87.524693
    North_Bounding_Coordinate: 41.675861
    South_Bounding_Coordinate: 37.093142

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 30-Jun-1994
    Currentness_Reference:
    Data assembled from various sources into single coverage in December 1995 using list of State Conservation Areas from Land and Water Report (Illinois Department of Conservation, 30 June 1994).

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • G-polygon (47)

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.

      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:

  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview:
    File attribute items are in typical SDE format. Additional attributes include Conservation Area name and source of information.


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    GIS Staff
    Illinois Natural History Survey
    607 E. Peabody Dr.
    Champaign, Illinois 61820
    USA

    Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday - Friday, U.S. Central Time


Why was the data set created?

Intended to include representation for each Conservation Area. These data are appropriate for regional thematic analysis. They are not appropriate as a geodetic or engineering base.

The data set was not and is not intended as a substitute for surveyed locations, such as can be determined by a registered Public Land Surveyor. Although useful in a GIS as a reference base layer for maps, the data set has no legal basis in the definition of boundaries or property lines.


How was the data set created?

  1. From what previous works were the data drawn?

    none (source 1 of 2)
    U.S. Geological Survey, various, USGS 7.5' topographic quadrangles: USGS 7.5' topographic quadrangles various quads.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 24000
    Source_Contribution: polygon outlines and locations

    none (source 2 of 2)
    US Department of Commerce, Bureau of Census, 199106, TIGER/Line files and associated technical documentation..

    Type_of_Source_Media: CD-ROM
    Source_Scale_Denominator: unknown
    Source_Contribution: unknown

  2. How were the data generated, processed, and modified?

    Date: 30-Apr-1997 (process 1 of 2)
    Coverage copied from DNR GIS data CDs. Prior processing history unknown.

    Date: 02-Apr-2004 (process 2 of 2)
    The source coverage data for the feature class was reprojected from the customary ISGS Lambert projection, NAD27 to geographic coordinates, NAD83, double-precision. The features were imported into the ISGS SDE enterprise database, following steps outlined in ISGS procedure GISDB_0009.

    The source coverage was stconsrv.

    Person who carried out this activity:

  3. What similar or related data should the user be aware of?

    , ISGS Terms of Use.

    Online Links:

    , University of Illinois Web Privacy Notice.

    Online Links:

    , University Copyright Policy (stated in the General Rules Concerning University Organization and Procedure, Article III, Section 4).

    Online Links:

    , Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign.

    Online Links:


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    No report.

  2. How accurate are the geographic locations?

    Digitized boundaries have not been verified. Boundaries from plat books were digitized on screen against 1:100,000 coverages (e.g.roads, section lines, etc.)

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    Conservation Areas included in this data set are based on a list from Land and Water Report as of June 30, 1994 by the Illinois Department of Conservation. Changes made to this list since December, 1995 will not be reflected in this data set. The Illinois Department of Natural Resources is the definitive source as to its land holdings.

  5. How consistent are the relationships among the observations, including topology?

    No report.


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:
INRS information must be obtained directly from the INRS or from an authorized distributor. Be aware that INRS information obtained from an unauthorized third party may have been altered subsequent to original distribution, or may no longer be current.

Any access to these data, Web sites, computer systems, electronic services, and electronic networks is governed by University and campus policies, in particular, but not limited to, the Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign, the ISGS Terms of Use document available at the ISGS Web site, and the University of Illinois Web Privacy Notice.

Links to these are provided in the Cross References section.

Use_Constraints:
This information is the property of and copyrighted by the Board of Trustees of the University of Illinois with all rights reserved. University copyright policy is stated in the General Rules Concerning University Organization and Procedure, Article III, Section 4. A link is provided in the Cross References section.

Individuals or entities may make fair use of copyrighted material, such as reproducing a single figure or table, or using a brief text quotation, without obtaining formal permission, but in all cases the Illinois Natural History Survey must be credited as the source of the material. To reproduce this information beyond the fair use standard, permission must be obtained from the INHS care of ISGS Information Office, 615 East Peabody Drive, Champaign, Illinois 61820, 217-333-4747, isgs@isgs.illinois.edu. License fees and a license agreement may be required, depending on the proposed usage.

Any use of these data is governed by University and campus policies, in particular, but not limited to, the Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign, and the University of Illinois Web Privacy Notice. Links to these are provided in the Cross References section.

Map information is to be used at a scientifically and cartographically appropriate scale, that is, at a scale no greater than indicated on the map or as described in the documentation of the map or map data. Map information is not appropriate for, and is not to be used as, a geodetic, legal, or engineering base. Map information has no legal basis in the definition of boundaries or property lines and is not intended as a substitute for surveyed locations such as can be determined by a registered Public Land Surveyor.

The data do not replace the need for detailed site-specific studies.

  1. Who distributes the data set? (Distributor 1 of 1)

    Information Office, Illinois State Geological Survey (ISGS), a division of the Institute of Natural Resource Sustainability (INRS) of the University of Illinois
    615 East Peabody Drive
    Champaign, Illinois 61820
    USA

    217-333-4747 (voice)
    isgs@isgs.illinois.edu

    Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time
  2. What's the catalog number I need to order this data set?

  3. What legal disclaimers am I supposed to read?

    Refer to the Legal Notices of Terms and Conditions of the University of Illinois Web Privacy Policy (there is a link in the Cross References section) for policy statements regarding the following:

    Disclaimer of Liability Disclaimer of Warranties and Accuracy of Data Disclaimer of Endorsement Disclaimer for External Links Disclaimer of Duty to Continue Provision of Data Security Choice of Law

    By obtaining these data you agree to the provisions of the University of Illinois Web Privacy Policy, regardless of the manner in which the information was obtained.

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    The data are intended for use with GIS software. The ISGS uses ESRI ArcGIS software, however, ESRI formats can be imported into many different GIS software packages. It is expected that customers who obtain these data have the technical expertise to use GIS software. The ISGS does not provide software support of any kind.


Who wrote the metadata?

Dates:
Last modified: 14-Apr-2009
Metadata author:

Contact_Instructions: Please refer to the Distribution Information section.
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:


Illinois Natural Resources Geospatial Data Clearinghouse

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