Mud Lake/West Jefferson County/ Airport

1U2 · Mud Lake, ID · Non-towered · Print kneeboard

Elevation

4,795 ft MSL

Longest runway

3,300 ft 02/20

Runway

Mag var

16E

CTAF 122.9

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Weather

METAR observed

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TAF forecast

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Sun & FAA night2026-08-04 · night begins 09:22 PM

Event	Local (MDT)	UTC
Morning civil twilight Loggable night ends	05:49 AM	11:49Z
Sunrise	06:22 AM	12:22Z
Sunset	08:50 PM	02:50Z
Evening civil twilight Loggable night begins	09:22 PM	03:22Z

Loggable night (§1.1)

09:22 PM → 05:49 AM

Night currency (§61.57)

09:50 PM → 05:22 AM

Plan a flight from 1U2

Destination

TAS (kt)Burn (gph)Reserve (hr)Cruise (ft)Max alt (ft)Wind from (°)Wind (kt)

Winds aloft NOAA forecast · 3,000 to 53,000 ft

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Advisories

NOTAMs

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Pilot reports

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Airspace hazards

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Runways

RWY 20LEFT traffic

Heading: 217° mag · 233° true
Dimensions: 3,300 × 40 ft
TPA: 5,800 ft MSL (≈1,000 AGL) · standard
Surface: ASPH-G
CTAF: 122.9

Enter the left downwind (heading 037°) on the 45° at 5,800 ft MSL (≈1,000 AGL).

Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: schematic (headings + lengths)

Will it fit? Your aircraft's required runway length (from the POH) — checked against every runway here

ft · ≥1.5× comfortable, under 1.25× tight · saved across airports

Runway	Length	Your margin
02/20	3,300 ft

Prefer one flat page? Full runway details for 1U2 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 1U2 kneeboard →

Comms & NavAids

Communication frequencies

Taxi & takeoff

CTAF

122.9

Source: FAA NASR (current 28-day cycle).

Nearby navigation aids

DBS 116.90 · IDA 113.85

NavAid	Type	Freq · ch	Range	Radial / Dist magnetic
DBS · Dubois	VORTAC	116.90 · 116X	High	r207° / 19.1 NM
IDA · Idaho Falls	VOR/DME	113.85 · 85Y	High	r302° / 27.5 NM

Prefer one flat list? All 1U2 frequencies →

Charts & procedures

PDF ↗

Chart Supplement ↗

VFR sectional →

Airport info

Airport information

FAA LID: 1U2
Coordinates: 43.8510, -112.5014
Elevation: 4,795 ft MSL
Magnetic variation: 16E
Sectional chart: SALT LAKE CITY
Airport use: Public
Control tower: No
ARTCC: SALT LAKE CITY (ZLC)
Flight service (FSS): BOISE · 122.6 · 1-800-WX-BRIEF
NOTAM facility: BOI
Attendance: MAY-OCT ALL 0800-1700; NOV-APR IREG IREG
Beacon: white-green (SS-SR)
Segmented circle: Yes
Wind indicator: yes
Activated: 1972/12
Distance from city: 1 NW

Night operations

Airport lighting: SS-SR
Rotating beacon: white-green · SS-SR
Pilot-controlled lighting: Usually keyed on CTAF 122.9 — confirm the click sequence in the Chart Supplement ↗

FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.

Services fuel · repairs · oxygen · attendance

Bottled oxygen: NONE
Bulk oxygen: NONE
Airframe service: MAJOR
Powerplant service: MAJOR
Parking: tiedowns
Other services: Agricultural

Ownership & management 2 contacts

Owner

CITY OF MUD LAKE

PO BOX 131, TERRETON, ID

208-663-4840

Manager

1583N 1000 E, MUD LAKE, ID

208-663-4840

Remarks FAA · 10 notes

General

NGT OPS RECOMMENDED ONLY TO PLTS FAMILIAR WITH ARPT APCHS AND SURROUNDING TERRAIN.
LIRL RWY 22 & ROTG BCN INOP EACH YEAR FM 1 NOV - 1 APR.
CFM SN REMOVAL & WINT COND WITH AMGR: 208-663-4840.
EMERG FUEL SVC ONLY (JET-A & 100LL). CALL AMGR AT 208-663-4840.
FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.

Lighting

LOW INTST THR LGTS RWY 22; FST 600 FT RWY HAS LOW INTST EDGE LGTS; RMNG 2700 FT OF RWY ILLUMINATED WITH SOLAR LGTS.

Obstructions

17 FT HWY AT 80 FT ON CNTRLN, FM END OF PAVEMENT.
17 FT ROAD AT 580 FT, 33:1 FM THR.
THR 450 FT FM 15 FT ROAD. 22:1 SLP FM THR.
ADDNL OBSTN: 12 FT STOP SIGN AT 540 FT ON CNTRLN, +40 FT POLE AT 650 FT, 130 FT RIGHT FM EXTDD CNTRLN.

Nearby airports

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Also nearby: U41 Dubois Municipal Airport (22 NM) · U97 Howe Airport (24 NM) · U37 Midway Airport (27 NM) · U56 Rigby Airport (28 NM)

About 1U2

Mud Lake/West Jefferson County/ Airport (1U2) is an airport in Mud Lake, ID, at 4,795 ft MSL. It has 1 runway, the longest 3,300 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 1U2, refreshed from the Aviation Weather Center and FAA NASR.

Does 1U2 have a control tower?

No. Mud Lake/West Jefferson County/ Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.

What is the longest runway at 1U2?

Mud Lake/West Jefferson County/ Airport has 1 runway; the longest is 3,300 ft. See the Runways section for headings, surface, and lighting.

Where is 1U2?

Mud Lake/West Jefferson County/ Airport is in Mud Lake, ID, at an elevation of 4,795 ft MSL. Coordinates: 43.8510, -112.5014.

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Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 1U2 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.