Boulder Flat
Flat in Lemhi County, Idaho · on the USGS Hayden Creek quadrangle
44.76020, -113.71422
Maps that show Boulder Flat
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Hayden Creek, ID
USGS topo, 2024
Lemhi, ID
USGS historical 15-minute topo (1956)
Challis Travel Map
BLM Idaho (2024)
North Zone Over-Snow Vehicle Use Map
Salmon-Challis National Forest (2024)
South Zone Over-Snow Vehicle Use Map
Salmon-Challis National Forest (2024)
IFR Enroute Low Altitude Chart L-11 (U.S.)
FAA, 2026-10-29
IFR Enroute Low Altitude Chart L-13 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-03 (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
Name, class, county and location: USGS Geographic Names Information System (public domain).