Illinois Oil and Gas Resources (ILOIL) Internet
Map Service
Terms of Use
The Illinois Oil and Gas Resources
Web mapping project enables on-line access to the large petroleum
database of over 180,000 Illinois well records. This database has been
in development for many years by the Oil and Gas Section of the
Illinois State Geological Survey. Traditionally, these well records
have only been available during regular business hours at the
Geological Records Unit in Champaign, Illinois.
Notes for Interactive Mapping
- Your browser must have Frames and JavaScript enabled.
- The Web interface is best viewed using Internet Explorer.
- It is not possible to bookmark map views. Instead, bookmark
this access page.
Instructions for accessing Illinois Oil and Gas well data, a screen
shot of the Interactive Mapping Web Interface, and descriptions of the
navigational tools of the Interactive Mapping Web Interface are
detailed below. Read the Illinois DNR digital data
License Agreement before you proceed.
Instructions for Accessing Illinois Oil and Gas Resources Data
Map manipulation tools are offered on the left side of the interface.
The currently selected tool will be outlined in red, as the "Zoom In"
tool is outlined in the screen shot shown below. Data layer visibility
and activation control is located on the right side of the interface.
The visitor must set desired "Active" layer combinations and then
implement "Refresh Map" in order to create a custom map view.
- Step 1: Enlarge an appropriate area.
The "Zoom In" tool is the default tool upon launch of the
Interactive Mapping Interface.
- Step 2: Set to "Visible" any data layers you wish to enable.
Data layers are listed in order by geologic time period. By default,
the "Oil Fields" data layer is set to "Visible." Any combination of
data layers can be set to "Visible."
- Step 3: Click the "Refresh Map" button.
The "Refresh Map" button is listed below all data layers and
will complete alterations to the selection of "Visible" layers.
Data layers "Wells", "Counties", and "Oil Fields
Data" are set to "Visible" in the screen shot shown below.
- Step 4: Access Data
To use the "Select Multiple" rectangle tool, first set the "Active"
layer to the desired data layer by clicking the corresponding
radio button. The "Wells" data layer is set as "Active"
in the screen shot shown below.
Navigational Tools of the
ILOIL Interactive Mapping Web Interface |
|
Overview Map |
Turn the Overview Map displayed in
the upper left corner of the map frame on or off. |
|
Zoom In |
Enlarge the map image by clicking
on a spot or dragging a rectangle around the area of interest. |
|
Zoom Out |
Reduce the map image by clicking on
a spot or dragging a rectangle around the area of interest. |
|
Pan Map View |
Drag the map image so that the area
of interest is shifted within the view. |
|
Previous Extent |
Return the map view to the previous
zoom level and location. |
|
Zoom to Full Extent |
Zoom the map view out to the the fullest
extent of all data layers, in this case, the boundary of the state
of Illinois. |
|
Select Within |
Graphically select multiple records
by dragging a rectangle around the area of interest. Features in the
rectangle will be selected and highlighted in light blue. A table
of information pertaining to the active layer will appear.
The user MUST specify the "active layer" to the desired
data layer county. |
|
Identify |
Identify a selected feature. A table
of information for the selective feature and within the active layer
will appear. |
|
Measure |
Click on the map to create line segments.
Distance (in miles) for each line segment and the total of all segments
will be displayed. |
|
Buffer |
First, use the "Select Within"
tool to select multiple records. Features in the rectangle will be
selected and highlighted in light blue. Use the "Buffer"
dialog box to highlight features from a specified data layer within
a specified distance (in miles). |
|
Clear Selection |
Unselect all previously selected features. |
|
Print Map View |
The user is prompted to submit a map
title. The user types and submits the title, a new window opens that
contains a formatted title, map image, and legend suitable for printing.
Use the browser "Print" button to print the map. |
|
Legend or Layers |
Toggle between the layer list and
the map legend. The layer list enables the user to set the active
data layer and also set the display of individual data layers to be
on or off. The legend is a graphical representation of the symbology
of all visible map layers. |
|