Illinois Water Well (ILWATER) Internet Map Service
Terms of Use
The Illinois Water and Related Well Data Web
mapping project enables on-line access to a large database of over
275,000 Illinois water and related well records. This database has
been in development for many years by 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.
Disable all POPUP BLOCKER software to access well records.
Instructions for accessing Illinois Water and Related 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 Water and Related Well Data
Resources
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Map manipulation tools are offered on the left side of the interface.
The currently selected tool will be outlined in red, as the
"Select Within" 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.
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Step 1: Enlarge an appropriate area.
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The "Zoom In" tool is the default tool upon launch of
the Interactive Mapping Interface.
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Step 2: Set to "Visible" any data layers you wish to
enable.
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Geologically relevant data layers are listed in order by Depth
of Aquifer. By default, the "Major Sand and Gravel
Aquifers" data layer is set to "Visible." Many
combinations of data layers can be set to "Visible."
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Step 3: Click the "Refresh Map" button.
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The "Refresh Map" button is listed below all data layers
and will complete alterations to the selection of
"Visible" layers. Data layers "Water and Related
Wells," "Interstates," "US Highways,"
"State Routes," "Sections,"
"Townships," "Counties," "Lakes,"
"Municipalities," and "Major Sand and Gravel
Aquifers" are set to "Visible" in the screen shot
shown below.
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Step 4: Access Data
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To use the "Select Within" rectangle tool, first set
the "Active" layer to the desired data layer by clicking
the corresponding radio button. The "Water and Related Wells"
data layer is set as "Active" in the screen
shot shown below.
Navigational Tools of the ILWATER Interactive Mapping Web Interface
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Overview Map
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Turn the Overview Map displayed in the upper left corner of the
map frame on or off.
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Zoom In
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Enlarge the map image by clicking on a spot or dragging a
rectangle around the area of interest.
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Zoom Out
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Reduce the map image by clicking on a spot or dragging a
rectangle around the area of interest.
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Pan Map View
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Drag the map image so that the area of interest is shifted within
the view.
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Previous Extent
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Return the map view to the previous zoom level and location.
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Zoom to Full Extent
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Zoom the map view out to the the fullest extent of all data
layers, in this case, the boundary of the state of Illinois.
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Select Within
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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.
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Hyperlink
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Graphically select a water well data record for viewing from the
"Water and Related Wells" data layer. A separate
file-viewing window appears to display the well record.
There is no need to specify an "active layer."
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Identify
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Identify a selected feature. A table of information for the
selective feature and within the active layer will appear.
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Measure
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Click on the map to create line segments. Distance (in miles)
for each line segment and the total of all segments will be
displayed.
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Set Measure Units
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Specify the "Map Units" and "Display Units: to be used with
the "Measure" Tool. "Map Units" can be set to feet, meters, or
degrees. "Display Units" can be set to feet, miles, meters, or
kilometers.
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Clear Selection
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Unselect all previously selected features.
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Print Map View
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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.
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Legend or Layers
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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.
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