Lake Mason NWR - Willow Creek Unit Map (2025)
by Fish & Wildlife Service Refuge Maps (public domain) · Lake Mason National Wildlife Refuge, US
Free
A free GeoPDF for offline GPS in the Cartahaven app, with free updates. How it works offline
A georeferenced satellite imagery map showing the location of Lake Mason NWR - Willow Creek Unit (1,976-ac) located in Musselshell County, Montana. This Refuge Unit lies within and is managed by the Charles M. Russell Wetland Management District. Author(s) Cortez Rohr District Manager Expertise Wildlife Biology; Habitat Restoration; Habitat Management; Land Management Contact +1406-538-8706 Send a Message Area MT Lewistown, MT
Lake Mason National Wildlife Refuge map published by the U.S. Fish and Wildlife Service (2025-04-25). Public domain, republished unmodified from https://www.fws.gov/media/lake-mason-nwr-willow-creek-unit-map. Refuge rules change every season: check the refuge's current hunting and fishing regulations before you go. This store is not affiliated with or endorsed by the U.S. Fish and Wildlife Service.
What you get
- Your GPS position on the map. A blue dot on this official sheet shows where you are.
- Works with no signal. Download it once; the map and your GPS position keep working with no cell signal.
- Tracks, placemarks and photos. Record where you go, drop pins, and export GPX, KML or GeoJSON.
- Free updates. When a new edition is published here, it’s yours at no cost.
- 1Tap “Get this map”: it’s added to your free account.
- 2Open the Cartahaven app on your phone and sign in.
- 3Tap “My purchases” (“Get my maps” before you sign in). It’s on your phone, ready offline.
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Version history
Version 1 · Nov 2, 2026 · 1.0 MB