Identification_Information: Citation: Citation_Information: Originator: Illinois Department of Natural Resources Publication_Date: 1994 Title: Streams and Shorelines in Illinois Edition: 20040401 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: ISGS GIS Database Issue_Identification: GISDB_HYDRO.IL_Streams_From_100K_DLG_Ln Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Online_Linkage: http://www.isgs.illinois.edu/ Online_Linkage: http://illinois.edu Description: Abstract: This dataset contains data representing streams and shorelines in Illinois and portions of surrounding states as derived from US Geological Survey 1:100,000-scale Digital Line Graph files, hydrography layer, 1980-1986. This includes all the DLG streams data that ISGS/IDNR customarily stored by county prior to 2004. Polygon topology is not included (i.e. Lakes can not be identified or shaded). Many class 1 streams are not included. Edgematching and generation of polygon topology for lakes and large rivers is incomplete. Publication dates of the USGS maps used as sources range from 1980 to 1986. The maximum estimated error in horizontal position based on National Map Accuracy Standards is 167 feet. Experience shows that actual locational error appears to be greater, especially in localized areas. Attributes include feature type and coincidence, among others. The data are stored in geographic coordinates, NAD83. These data have not been updated since 1986 (except in one isolated instance), nor are there plans to do so. Accordingly, these data are for general reference and cartographic use. This is a legacy dataset made available as a convenience. The data are not suitable for showing all local streams or shorelines at a large scale for any given area. These data can be considered to be essentially out of date and unmaintained. These data and most of the accompanying metadata were originally developed and maintained under the auspices of the Illinois Geographic Information System (IGIS) initiative (circa 1986). Maintenance of the metadata was transferred to ISGS circa 1996. Purpose: These data are primarily intended as a cartographic element on maps for spatial reference. This dataset serves as an important base cartographic element for many types of maps and has been widely distributed and used outside the ISGS. 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. Supplemental_Information: Edition 1.0 of this dataset was updated by conversion to the ArcSDE data storage model, metadata update, and appending coverage data for the 102 counties in Illinois into a single feature class. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1980 Beginning_Time: 1986 Currentness_Reference: publication dates of source data Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -91.511860 East_Bounding_Coordinate: -87.495830 North_Bounding_Coordinate: 42.500016 South_Bounding_Coordinate: 37.000043 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: stream Theme_Keyword: river Theme_Keyword: creek Theme_Keyword: shoreline Theme_Keyword: hydrology Theme_Keyword: hydrography Theme_Keyword: lake Theme_Keyword: water Place: Place_Keyword_Thesaurus: none Place_Keyword: Illinois Access_Constraints: ISGS information must be obtained directly from the ISGS or from an authorized distributor. Be aware that ISGS 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: ISGS 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 ISGS 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 State Geological Survey must be credited as the source of the material. To reproduce ISGS information beyond the fair use standard, permission must be obtained from the 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, 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. 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. Point_of_Contact: Contact_Information: Contact_Instructions: Please refer to the Distribution Information section. Native_Data_Set_Environment: ArcSDE 9.1 on Oracle 10g Cross_Reference: Citation_Information: Title: ISGS Terms of Use Online_Linkage: http://www.isgs.illinois.edu Cross_Reference: Citation_Information: Title: University of Illinois Web Privacy Notice Online_Linkage: http://www.vpaa.uillinois.edu/policies/web_privacy.cfm Cross_Reference: Citation_Information: Title: University Copyright Policy (stated in the General Rules Concerning University Organization and Procedure, Article III, Section 4) Online_Linkage: http://www.uillinois.edu/trustees/rules.cfm#sec34 Cross_Reference: Citation_Information: Title: Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign Online_Linkage: http://www.fs.uiuc.edu/cam/CAM/viii/viii-1.1.html Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: No report. Consult source DLG information. Logical_Consistency_Report: Data set is topologically structured linear data however data have not been thoroughly edgematched and are not a topologically complete representation of the hydrologic network. Pseudo nodes and discontinuities exist on many arcs. Completeness_Report: Dataset is incomplete. No statement of completeness was provided with the original USGS DLG data. Visual inspection and comparison with other larger scale sources suggests that many first and second order streams are not included. The level of detail (completeness) varies across quad (module) boundaries due to the variation in the original DLG data. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Accuracy of 1:100,000 analog map based on USGS National Map Accuracy Standards. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Bureau of the Census, US Department of Commerce Publication_Date: Unknown Title: TIGER/Line Files, hydrography layer, 1980-86 Source_Scale_Denominator: 100000 Type_of_Source_Media: digital file Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1980 Ending_Date: 1986 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: none Source_Contribution: hydrographic data Process_Step: Process_Description: Refer to abstract. Process_Date: Unknown Process_Step: Process_Description: Data corrected for Pike and Scott counties. Eleven stream arcs occurred in the northeast corner of the Pike county streams coverage that should actually be in the Scott county streams coverage. It is assumed that this was caused by clipping the original statewide streams coverage with an incorrect county boundary. The fix was performed in ArcEdit 7x by selecting the arcs in the Pike coverage and PUTting them into the Scott coverage. Process_Date: 20021022 Process_Step: Process_Description: The 102 county-by-county coverages stored as /streams were appended using Arc/Info 7.2.1 on a UNIX workstation. The process was automated with an AML program. The command was: Arc: append streams line features (the 102 coverages were listed here) end The new coverage was reprojected from customary ISGS Lambert projection, NAD27 to geographic coordinates, NAD83, double-precision. That coverage was imported into ISGS SDE enterprise database, following steps outlined in ISGS procedure GISDB_0009. Spatial index grid size was set at 0.125 degrees. Metadata was updated. Process_Date: 20040401 Process_Contact: Contact_Information: Contact_Person_Primary: Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 85712 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000001 Longitude_Resolution: 0.000001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Attribute items are in typical ArcSDE feature class format. Those requiring additional explanations are: ENR1, ENR2, ENR ENR1 and ENR2 are concatenated to create ENR Code composed of one or two parts describing the type of feature represented. Derived from original coding in DLG files. From Standards for Digital Line Graphs, USGS, 1987. Values for ENR1 include: 200 - shoreline 201 - manmade shoreline 203 - indefinite shoreline 204 - apparent limit, delineates patterned areas on quads 412 - stream 414 - ditch of canal 415 - aqueduct 418 - siphon 419* - boundary of a channel in a waterbody Values for ENR2 include: 406 - dam 407 - canal lock or sluice gate 409 - gate (flood, tidal, head, check) 605 - right bank 606 - left bank 610 - intermittent 611 - abandoned These codes are not consistent with USGS coding but were added by IGIS staff to originally unattributed arcs. Special cases of minor code values: 202 (closure): This value appears both alone and as a modifier for streams (412) and ditches (414). This code is maintained as 202 in ENR2. ENR codes containing 202 include 000202, 412202 & 414202. 406 (dams): This value appears both alone and as a modifier to shorelines (200). This code is maintained as 406 in ENR2. Possible codes include 000406 and 200406. 602 (overpassing) 617 (underpassing): These descriptors are modifiers for a number of feature types including siphons (418), streams (412) and ditches (414). They are carried in item OV-UN. 1 indicates overpassing and 2 indicates underpassing. Precedence: In a few limited cases, information coded in the original data was discarded due to how the codes were restructured. These situations are resolved as follows: intermittent and closure line are coded as closure lines (202) intermittent and abandoned are coded as intermittent (610) 414 610 202 ditch intermittent closure. Closure supersedes 414 610 611 ditch intermittent abandoned. Interim. supersedes OV-UN Overpassing indicates a feature that passes over rather than intersects another feature, such as an aqueduct. Note that this is not maintained topologically. Underpassing indicates a feature passing under another feature, such as an aqueduct. from Standards for Digital Line Graphs, USGS, 1987. Domain: 0 - Neither 1 - overpassing 2 - underpassing COINCIDENT DLG feature code indicating the type of feature in other DLG data sets with which this arc is coincident. This attribute was carried over form the original DLG data set and has not been checked or maintained. Refer to USGS DLG Users Guide. from Standards for Digital Line Graphs, USGS, 1987. Domain: See USGS DLG Users Guide 2. HLINE Six-digit integer previously used for archival purposes. Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Information Office, Illinois State Geological Survey (ISGS), a division of the Institute of Natural Resource Sustainability (INRS) of the University of Illinois Contact_Address: Address_Type: mailing and physical address Address: 615 East Peabody Drive City: Champaign State_or_Province: Illinois Postal_Code: 61820 Country: USA Contact_Voice_Telephone: 217-333-4747 Contact_TDD/TTY_Telephone: 217-785-0211 Contact_Electronic_Mail_Address: isgs@isgs.illinois.edu Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time Distribution_Liability: 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. Technical_Prerequisites: 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. Metadata_Reference_Information: Metadata_Date: 20090224 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Instructions: Please refer to the Distribution Information section. Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Access_Constraints: The access constraints as stated for the data apply also to the metadata. Refer to the Access Constraints section of the Identification Information section. Metadata_Use_Constraints: The use constraints as stated for the data apply also to the metadata. Refer to the Use Constraints section of the Identification Information section. Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile