(1) vector spatial data layers in ArcView data format for aquifer sensitivity units and sensitivity class boundaries;
(2) JPEG browse images from the final published map, and
(3) metadata in FGDC HTML format for all spatial layers.
The vector data include designation for aquifer sensitivity class and a line-type indicator.
Vector data are in the geographic coordinate system, decimal degrees, NAD83.
For a detailed list of the files included in the data product, see the Supplemental_Information section.
The data were published in 1999 on an ISGS Illinois Geologic Quadrangle entitled General Aquifer Sensitivity Map, Villa Grove Quadrangle, Douglas County, Illinois by Richard C. Berg and Curtis C. Abert. The data in this compilation do not include all the information on the published map. Refer to the published map for a complete explanation of the Aquifer Sensitivity of the Villa Grove Quadrangle.
The nominal scale is 1:24,000.
Detailed List Of Files included in the product ---------------------------------------------- Folder Filename Size(kb) Filetype Description ----------------- -------------- -------- --------------------------------------------- ------------------------------------------------------ dp00008 aqsen_ln.dbf 3 shapefile dBase component sensitivity class boundaries - map boundaries dp00008 aqsen_ln.prj 1 shapefile projection component sensitivity class boundaries - map boundaries dp00008 aqsen_ln.shp 81 shapefile sensitivity class boundaries - map boundaries dp00008 aqsen_ln.shx 1 shapefile component sensitivity class boundaries - map boundaries dp00008 aqsen_py.dbf 2 shapefile dBase component aquifer sensitivity units dp00008 aqsen_py.prj 1 shapefile projection component aquifer sensitivity units dp00008 aqsen_py.shp 151 shapefile aquifer sensitivity units dp00008 aqsen_py.shx 1 shapefile component aquifer sensitivity units dp00008 readme.htm 13 ASCII text imbedded in HTML describes this data bundle Folder Filename Size(kb) Filetype Description ----------------- -------------- -------- --------------------------------------------- ------------------------------------------------------------- dp00008/images browse_l.jpg 552 JPEG/JFIF image reduced resolution image of the complete map sheet dp00008/images browse_m.jpg 453 JPEG/JFIF image reduced resolution image of the mapped quad as it appears on the published map dp00008/images browse_s.jpg 11 JPEG/JFIF image small browse graphic dp00008/images locmap.jpg 56 JPEG/JFIF image location map from published map Folder Filename Size(kb) Filetype Description ----------------- -------------- -------- --------------------------------------------- ------------------------------------------------------------- dp00008/metadata aqsen.htm 18 metadata in FGDC HTML outline format aquifer sensitivity units and sensitivity class boundaries metadata dp00008/metadata dp00008.htm 21 metadata in FGDC HTML outline format overall metadata document to describe this data bundle dp00008/metadata dp00008f.htm 21 metadata in FGDC HTML FAQ format overall metadata document to describe this data bundle
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.
These data should not be used at scales greater than 1:24,000.
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.
It is assumed that those who wish to download, unzip and use these data are technically proficient in using the Internet, file zipping software, and GIS software. The ISGS will entertain questions about the data, but will not provide support of any kind in regard to the use of the Internet or any particular software package.