Big Sandy Opening, WY Forest Service Topo Map (FSTopo)
by Forest Service FSTopo Quads (public domain), US
A free GeoPDF for offline GPS in the Cartahaven app, with free updates. How it works offline

About the Big Sandy Opening quad
The Big Sandy Opening quadrangle is a Forest Service FSTopo 7.5-minute map at 1:24,000 covering about 7.7 × 9.7 mi of Sublette County, Wyoming. It overlaps Bridger-Teton National Forest. The GeoPDF is 1.8 MB.
All Wyoming Forest Service FSTopo maps · Wyoming hunting units
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 “Get my maps”. It’s on your phone, ready offline.
The app runs on iPhone, Android and in desktop browsers. Install it · How offline GPS works
Where this map covers
Named places on this map
26 named features inside the Big Sandy Opening — Forest Service FSTopo 7.5-minute quad sheet, from the USGS Geographic Names Information System. Each one links to every map that shows it.
Peaks and ridges
Lakes, springs and falls
- Beaver Lake · lake
- Big Sandy Opening · swamp
- Boulter Lake · lake
- Boulter Reservoir · reservoir
- Dads Lake · lake
- Diamond Lake · lake
- Donald Lake · lake
- Fish Lake · lake
- Francis Lake · lake
- Iron Creek Meadows · swamp
- Jim Lake · lake
- Johnson Lake · lake
- Lamreaux Meadows · swamp
- Legion Lake · lake
- Little Dads Lake · lake
- Meeks Lake · lake
- Mirror Lake · lake
- Mud Lake · lake
- Muddy Lake · lake
- Poston Lake · lake
- Poston Meadows · swamp
- Sedgewick Meadows · swamp
- Twin Lakes · lake
- V Lake · lake
Gaps, arches and other landforms
- Fish Creek Park · flat
Elevations are the USGS 3DEP ground elevation at the named point, rounded; a summit's surveyed height can differ a little.
More maps of Bridger-Teton National Forest.
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Big Sandy Opening, WY
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Version history
Version 1 · Nov 8, 2026 · 1.8 MB