Mazama, Washington
W12 Lost River
Lost River (W12) is a non-towered, public-use airport in Mazama, Washington, at 2,415 ft MSL. Its runway is 11/29 (3,150 by 85 ft, turf and gravel). Right traffic for runway 11. CTAF 122.9.
FAA NASR data effective Oct 29, 2026. Not for navigation; verify with current FAA charts and the Chart Supplement.
Airport
At a glance
- Identifiers
- FAA W12
- Location
- Mazama, Washington (Okanogan County). 5 NM NW of the city center
- Elevation
- 2,415 ft MSL
- Position
- 48.6496° N, 120.5020° W
- Control tower
- No, non-towered
- Sectional chart
- Seattle
- Magnetic variation
- 21° E (1985)
- Ownership
- Privately owned, open to the public
- Attendance
- Unattended
1 runway
Runways
| Runway | Length × width | Surface | Edge lights |
|---|---|---|---|
| 11/29 | 3,150 × 85 ft | Turf and Gravel, fair condition | Not listed |
Runway ends and traffic pattern
| End | Pattern | Glide slope lights | Instrument | Displaced threshold | Landing distance |
|---|---|---|---|---|---|
| 11 | Right traffic | None listed | None listed | None listed | Not listed |
| 29 | Not stated | None listed | None listed | None listed | Not listed |
VHF
Frequencies
- CTAF
- 122.9
Before you go
Brief W12 in Ascent EFB.
Current weather, NOTAMs and the airport diagram for Lost River, in the app on iPhone and iPad.
Not for navigation. Verify with current FAA charts and the Chart Supplement before flight.
Source: FAA NASR 28-day subscription, cycle effective Oct 29, 2026. Airport data changes every 28 days and NOTAMs can override it at any time.