Illinois Department of Natural Resources
1994
Streams and Shorelines in Illinois by County
1.0
map
IDNR GIS Database
streams
Gain Access to Illinois Datasets by County.
<URL:http://www.isgs.uiuc.edu/nsdihome/webdocs/county.html>
Text (.txt) version of this Metadata file.
(Shift-Click to download documentation)
<URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/streams.txt>
HTML (.html) version of this Metadata file.
(Shift-Click to download documentation)
<URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/streams.html>
Cartographic layers by county representing streams and shorelines
for all of Illinois and portions of surrounding states.
Derived from the US Geological Survey 1:100,000 Digital
Line Graph file, hydrography layer, 1980-1986. Polygon
topology is not included (i.e. Lakes can not be identified
or shaded). The estimated error in horizontal position
based on National Map Accuracy Standards is 167 feet. Many
class 1 streams are not included. Edgematching and generation
of polygon topology for lakes and large rivers is incomplete.
Each arc does carry attributes describing its character.
These data are appropriate for use in local and regional
thematic analysis using streams or shorelines. Data are not
appropriate as a geodetic or engineering base.
The path to these data sets is *path_name_suppressed*/streams
where <county_name> should be replaced with the name of the
county of interest. Longer county names have been truncated
to eight characters.
Fixes needed for streams are:
HLINE should be removed from the by county data sets.
1980
1986
Publication date of source
none planned
-92.0
-87.5
42.5
37.0
none
stream
lake
hydrology
hydrography
river
none
Illinois
none
Reproduction or redistribution of copyrighted digital data sets
or products derived therefrom outside of licensee's
organization or entity is expressly forbidden. The only
exception is redistribution to consultants working for the
licensee, and then only for purposes, related to work for the
licensee. Such consultants may not further reproduce or
redistribute these data sets. None of these data shall be
electronically duplicated on magnetic or optical media for
use by others, in whole or in part, without permission of the
appropriate custodial division within DNR.
Any hardcopies utilizing DNR data sets shall clearly indicate
their source. If the licensee has modified the data in any way
they are obligated to describe the types of modifications they
have performed on the hardcopy map. Licensee specifically agrees
not to misrepresent DNR data sets, nor to imply that changes they
made were approved by DNR.
These data are not to be used for commercial profit.
Illinois State Geological Survey
Information Office
mailing and physical address
615 East Peabody Drive
Champaign
Illinois
61820
USA
217-333-4747
217-785-0211
217-244-0802
isgs@isgs.uiuc.edu
8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time
> GIS Processing: INHS Staff
> Documentation: D. Nelson and S. Beaverson
> Quality Control: INHS Staff
Arc/Info version 7.0.3 software for UNIX,
with no8.3 setting.
None. Consult source DLG information.
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.
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.
Accuracy of 1:100,000 analog map based on USGS
National Map Accuracy Standards.
Bureau of the Census, US Department of Commerce
unknown
TIGER/Line Files, hydrography layer, 1980-86
digital files
100000
digital files
1980
1986
publication date
none
hydrographic data
see abstract
unknown
D. Nelson of ISGS corrected data 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.
20021022
Vector
Lambert Conformal Conic
33 0 0.000
45 0 0.000
-89 30 0.000
33 0 0.000
914400.00000 meters
0.00000
coordinate pair
unknown
unknown
feet
NAD27
CLARKE1866
6378206.4 meters
294.98
Attribute items are in feature class format.
Those arc attribute items requiring addintional expalnation are:
> ENR, Redefined to ENR1 and ENR2
> 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.
none
Illinois State Geological Survey
Information Office
mailing and physical address
615 East Peabody Drive
Champaign
Illinois
61820
USA
217-333-4747
217-785-0211
217-244-0802
isgs@isgs.uiuc.edu
8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time
An Arc/Info .e00 (export) file is currently available free of charge
at the Illinois Natural Resources Geospatial Data Clearinghouse.
Refer to the Citation Information portion of this file for access
to downloadable data and metadata.
Shift-click to download the data set and related documentation.
(Data and metadata offered separately via the Illinois Datasets
by County browse area, please download both files.)
The Illinois Department of Natural Resources (DNR) provides these
geographic data "as is." DNR makes no guarantee or warranty
concerning the accuracy of information contained in the geographic
data. DNR further makes no warranties, either expressed or implied
as to any other matter whatsoever, including, without limitation,
the condition of the product, or its fitness for any particular
purpose. The burden for determining fitness for use lies entirely
with the user. Although these data have been processed successfully
on computers of DNR, no warranty, expressed or implied, is made by
DNR regarding the use of these data on any other system, nor does the
fact of distribution constitute or imply any such warranty.
In no event shall the DNR have any liability whatsoever for payment
of any consequential, incidental, indirect, special, or tort damages
of any kind, including, but not limited to, any loss of profits
arising out of use of or reliance on the geographic data or arising
out of the delivery, installation, operation, or support by DNR.
19980731
19980731
200008
Illinois State Geological Survey
Information Office
mailing and physical address
615 East Peabody Drive
Champaign
Illinois
61820
USA
217-333-4747
217-785-0211
217-244-0802
isgs@isgs.uiuc.edu
8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time
FGDC Content Standards for Digital Geospatial
Metadata
FGDC-STD-001-1998
none
none