Lower Monumental Dam Heliport HeliportPrivate

WN84 · Kahlotus, WA · 465 ft elevation · var 19E · Non-towered

Overview Weather Runways Comms & NavAids Charts Services & info

Airport information

FAA LID: WN84
Coordinates: 46.5619, -118.5456
Elevation: 465 ft MSL
Magnetic variation: 19E
Sectional chart: SEATTLE
Airport use: Private
Control tower: No
ARTCC: SEATTLE (ZSE)
Flight service (FSS): SEATTLE · 122.5 · 1-800-WX-BRIEF
Attendance: UNATNDD
Segmented circle: Yes
Wind indicator: yes
Activated: 1987/09
Distance from city: 0 N

Weather

METAR observed

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TAF forecast

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Sun & FAA night 2026-06-23

Event	Local (PDT)	UTC
Morning civil twilight Loggable night ends	04:22 AM	11:22Z
Sunrise	05:01 AM	12:01Z
Sunset	08:51 PM	03:51Z
Evening civil twilight Loggable night begins	09:31 PM	04:31Z

Loggable night (§1.1)

09:31 PM → 04:22 AM

Night currency (§61.57)

09:51 PM → 04:01 AM

Plan a flight from WN84

Destination (ICAO)

TAS (kt)Burn (gph)Reserve (hr)Wind from (°)Wind (kt)

Runway H1/

200 ft × 200 ft · Asphalt

Heading: n/a
Threshold elev: 465 ft
Traffic pattern: Left

Heading: n/a

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
H1/	200 ft

Nearby navigation aids

NavAid	Type	Freq	Radial / Dist magnetic
PSC · Pasco	VOR-DME	108.40	r033° / 29.7 NM
ALW · Walla Walla	VOR-DME	116.40	r320° / 30.4 NM

VFR sectional

Open WN84 on the VFR sectional (SkyVector) ↗

No published instrument procedures or Chart Supplement for WN84. VFR sectional link above.

Ownership & management

Owner

U.S. ARMY CORPS OF ENGINEERS

1215 E AINSWORTH AVE, PASCO, WA

509-282-3218

Manager

ROBERT WITHAM

LOWER MONUMENTAL LOCK AND DAM, 5520 DEVILS CANYON ROAD, KAHLOTUS, WA

509-282-7253

Remarks FAA

General

FOR CD CTC CHINOOK APCH AT 509-542-4209, WHEN APCH CLSD CTC SEATTLE ARTCC AT 253-351-3694.

Nearby airports

W09 · Lower Monumental State Airport (1 NM)3WA3 · Angel Park AirportPrivate (5 NM)3WA4 · Watson AirportPrivate (10 NM)35WA · Fisher Ranch AirportPrivate (12 NM)WA14 · Connell City AirportPrivate (13 NM)37WA · Baumann Farm Inc. AirportPrivate (17 NM)

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 WN84 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.

About WN84

Lower Monumental Dam Heliport (WN84) is a heliport in Kahlotus, WA, at 465 ft MSL. It has 1 runway, the longest 200 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for WN84, refreshed from the Aviation Weather Center and FAA NASR.

Does WN84 have a control tower?

No. Lower Monumental Dam Heliport is a non-towered (pilot-controlled) heliport; use the published CTAF/UNICOM on the Comms & NavAids tab.

What is the longest runway at WN84?

Lower Monumental Dam Heliport has 1 runway; the longest is 200 ft. See the Runways tab for headings, surface, and lighting.

Where is WN84?

Lower Monumental Dam Heliport is in Kahlotus, WA, at an elevation of 465 ft MSL. Coordinates: 46.5619, -118.5456.

Fly out of WN84 often?

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