Grassy Lake
Lake in Lewis and Clark County, Montana · on the USGS Patricks Basin quadrangle
47.59552, -112.85506
Maps that show Grassy Lake
Get them in the map app
Patricks Basin, MT
Detailed map of terrain, trails and roads
USGS topo, 2024
Patricks Basin
Forest Service topo with road numbers
Forest Service FSTopo 7.5-minute quad
Rocky Mountain Ranger District Over-Snow Vehicle Use Map
Where snowmobiles are allowed
Helena-Lewis and Clark National Forest (2019)
Choteau 30x60 Land Ownership (BLM Surface Management)
Land Ownership Maps from BLM Data · Montana
Helena-Lewis and Clark National Forest
West — Forest Service forest map
Flathead National Forest
Forest Service forest map
Lolo National Forest
Forest Service forest map
IFR Enroute Low Altitude Chart L-13 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-01 (U.S.)
FAA, 2026-10-29
IFR Enroute Low Altitude Chart L-01 (Alaska)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).