1:24,000 scale Surface Geology

PDF maps are free to download as well as shapefiles.

To obtain a printed copy of the 1:24,000 scale (7.5 minute) maps please click ordering information.

Please allow 2-4 weeks for delivery. Price: $55 each.

Geospatial PDF files are available from the Avenza Map Store for $9.99. Note: These maps are created with Avenza MaPublisher and must be viewed with their propritary software (it is free for download and minimal use).

Disclaimer: "The views and conclusions contained in these documents/data are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government or the state of Louisiana.

These maps/data have been carefully prepared from the best existing sources available at the time of preparation. However, the Louisiana Geological Survey and Louisiana State University do not assume responsibility or liability for any reliance thereon.  This information is provided with the understanding that it is not guaranteed to be correct or complete, and conclusions drawn from such data are the sole responsibility of the user. These regional geologic quadrangles are intended for use at the scale of 1:24,000.  A detailed on-the-ground survey and analysis of a specific site may differ from these maps."

Ordering Information:

Please use the map below to determine the area in which you are interested. Then scroll down to the 100k map name chosen to view available .pdf/.shp files.

100k Map image





Pride (shapefiles zip)

Watson (shapefiles zip)

Atchafalaya Bay


Epps (shapefile zip)

Pioneer (shapefile zip)

Baton Rouge

Broussard (*shapefile zip*)

Prairieville (*shapefile zip*)

Saint Gabriel (*shapefile zip*)

Youngsville (*shapefile zip*)

Black Bay



Carencro (*shapefile zip*)

Duson (*shapefile zip*)

Lafayette (*shapefile zip*)

Milton (*shapefile zip*)

Mire (*shapefile zip*)



Lake Charles

Buhler (shapefiles zip)

Moss Bluff (shapefiles zip)

Westlake (shapefiles zip)



Mississippi River Delta

Monroe North

Monroe South

Morgan City



New Orleans

New Roads


Port Arthur

Shreveport North

Shreveport South


Terrebonne Bay

Ville Platte

White Lake