LDEQ GIS Center Intranet Home
page
The Louisiana Department of Environmental Quality
(LDEQ) has had a department-wide Geographical Information System (GIS)
in place since 1994. The GIS Center provides support to all GIS users
within LDEQ and constructs maps as requested by LDEQ personnel. The Center
also maintains and develops GIS data sets for agency mapping requirements.
What is a GIS? Perhaps the simplest definition would be “A computer
system capable of holding and using data describing places on the earth’s
surface.” This definition should actually be expanded to include
the individual parts of the system that comprise a Geographic Information
System. Therefore a better definition would be: “An organized collection
of computer hardware, software, geographic data and personnel designed
to efficiently capture, store, update, manipulate,
analyze, and display all forms of geographically referenced information.”
LDEQ GIS Center personnel use two specific GIS software packages: (1)
the Environmental Systems Research Institute,
Inc (ESRI®)
suite of GIS products named ArcGIS™. This suite of products uses
vector, or line data (which may be points, lines, or polygons) to represent
events or places on the earth’s surface and includes ArcInfo™,
ArcMap™, ArcCatalog™, ArcTools™, and ArcView™;
and (2) erdas IMAGINE® Imagine™ which
is used to process satellite imagery, aerial photography, radar imagery
and other image data, referred to as raster data.
LDEQ GIS Center personnel use these products to produce complex GIS projects.
ArcView™, the more “user friendly” software in this
package is also being used by upper management to access established
GIS data/data sets to assist in making executive level decisions and
by other LDEQ personnel to produce specific GIS Projects that assist
them in performing their daily tasks. Both of these GIS software packages
are used in tandem to create maps which can display attributes of data
stored in relational databases. |
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LDEQ Interactive Mapping Application

Click here to start
With LDEQ Interactive Mapping Application (LIMA), you
can make and use interactive maps inside your web browser. It allows you
to add many types of data layers, including satellite imagery and aerial
photography.
The Make-A-Map application has been taken offline and replaced with LIMA (see link above).
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