Over Snow Vehicle Use Map

Dec 1, 2014 - The Lolo National Forest’s Over Snow Vehicle Use Maps (OSVUM) are now the official map for over snow vehicle use. Click on the links below to view the new maps or visit a Lolo National Forest District office to pick up free copies. Please note, the Superior and Plains Ranger Districts are combined on one two-sided map and the Ninemile and Missoula Districts are combined on one two-sided map.

The Lolo National Forest’s Over Snow Vehicle Use Maps (OSVUMs) are free maps used to designate open routes, restricted routes, open areas, restricted areas, and snowmobile trails for over snow vehicle use across the forest. These maps designate roads and trails for winter use.

Please abide by motorized use rules on the forest and do not travel with motorized vehicles on roads and trails that are not designated open.

The OSVUM, which will be updated annually, should be used in conjunction with the Forest Visitor Map and the Motor Vehicle Use Map to navigate on the forest. Please stop by one of your local Ranger District offices to pick up a copy of the OSVUM. You may contact any one of the Ranger Districts for more information.


Ninemile - Missoula Districts

Ninemile Ranger District OSVUM - Front - 36" x 24"

Missoula Ranger District OSVUM -Back- 36" x 24"

Plains - Superior Districts

Plains Ranger District OSVUM - Front - 44" x 34"

Superior Ranger District OSVUM - Back - 44" x 34"

Seeley Lake District

Seeley Lake Ranger District OSVUM - 36" x 24




Avenza LogoIf you own a mobile device such as an iPad, iPhone, iPod Touch or Android (4.0.3 or newer), you can take the Lolo National Forest MVUMs with you.

1. Download the free Avenza PDFMaps app, available at http://www.avenza.com/pdf-maps to your mobile device.

2. Once you have Avenza on your mobile device, use your device to download the maps at pdf-maps.com while running the App. Select 'Get Maps' and search for “Lolo OSVUM” to download OSVUM's for Missoula, Ninemile, Plains, Superior Ranger and Seeley Lake Ranger Districts.

With the app and maps installed on your mobile device, you will be able to:

  • View your location on the PDF OSVUM using the built-in GPS device
  • Measure distances and areas
  • Plot waypoints
  • View maps offline
  • And more…

Through a no-cost contract with Avenza Systems, Inc., the USDA Forest Service has made electronic versions of its Over Snow Vehicle Use Maps (OSVUMs) available as free downloads for smartphones and tablets.