USGS Topographic Quadrangle Images (1998)

These are images of U.S. Geological Survey topographic maps that we received in 1998. The files have not been updated since that time, and many of the maps are more than 30 years old. For the latest USGS topographic map products, please see the US Topo web site. Newer versions of some of these maps are available for free download at the USGS TopoView Site.

The USGS refers to these images as Digital Raster Graphics (DRGs).   Use the links on this page to download DRG images in TIFF or MrSID format for use with image viewing or GIS software on your local system. Topographic maps may be viewed on-line in the Montana Digital Atlas or used without downloading the data via State Library web map services.

1:24,000 Scale Topographic Maps

Individual TIFF Files
Individual 7.5-minute quadrangles in UTM or State Plane coordinates.

50x35 Mile MrSID-Compressed Images
Each file covers approximately 36 quadrangles.

1:100,000 Scale Topographic Maps

Individual TIFF Files
Individual 60x30-minute quadrangles in UTM or State Plane Coordinates

Statewide MrSID File
In State Plane Coordinates (NAD83, meters).   This file is about 500 megabytes.  You may also need to download the world file to use this image. Click here to access the metadata.

1:250,000 Scale Topographic Maps

Individual TIFF Files
Individual 2x1-degree quadrangles in UTM or State Plane Coordinates

Statewide MrSID file
In State Plane Coordinates (NAD83, meters). This file is about 100 megabytes. You may also need to download the world file to use this image. Click here to access the metadata.