Grass Mountain, OR 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 Grass Mountain quad
The Grass Mountain quadrangle is a Forest Service FSTopo 7.5-minute map at 1:24,000 covering about 7.1 × 9.4 mi of Lincoln and Benton counties, Oregon. It overlaps Siuslaw National Forest. The GeoPDF is 2.3 MB.
All Oregon Forest Service FSTopo maps · Oregon 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
15 named features inside the Grass Mountain — 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
- Creel Hill
- Easter Ridge · ridge
- Grant Ridge · ridge
- Grass Mountain
- Green Ridge · ridge
- Kimble Ridge · ridge
- Lake Ridge · ridge
- Little Digger Mountain
- Lone Spring Mountain
Lakes, springs and falls
- Fall Creek Falls · falls
- Klickitat Lake · lake
- Scoville Spring · spring
- Thissell Pond · reservoir
Gaps, arches and other landforms
- Rocky Point · cape
- Trenholm Saddle · gap
Elevations are the USGS 3DEP ground elevation at the named point, rounded; a summit's surveyed height can differ a little.
More maps of Siuslaw National Forest.
Maps nearby
More maps around here ›
Grass Mountain, OR
Detailed map of terrain, trails and roads
USGS topo, 2024
Alsea, OR
Old map for history, not navigation
USGS historical 15-minute topo (1942)
Alsea, OR
Old map for history, not navigation
USGS historical 15-minute topo (1956)
Eugene 30x60 Land Ownership (BLM Surface Management)
Land Ownership Maps from BLM Data · Oregon
North Central Coast Ranger District Motor Vehicle Use Map (MVUM)
Forest roads and trails open to vehicles
Siuslaw National Forest (2026)
Siuslaw National Forest
Forest Service forest map
Version history
Version 1 · Nov 8, 2026 · 2.3 MB