AirNav: WN84 - Lower Monumental Dam Heliport

WN84

Lower Monumental Dam Heliport
Kahlotus, Washington, USA

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FAA INFORMATION EFFECTIVE 19 FEBRUARY 2026

Location

FAA Identifier:	WN84
Lat/Long:	46-33-42.9400N 118-32-45.4200W 46-33.715667N 118-32.757000W 46.5619278,-118.5459500 (estimated)
Elevation:	465 ft. / 142 m (estimated)
Variation:	19E (1985)
Time zone:	UTC -8 (UTC -7 during Daylight Saving Time)
Zip code:	99371

Heliport Operations

Heliport use:	Private use. Permission required prior to landing
Activation date:	09/1987
Control tower:	no
ARTCC:	SEATTLE CENTER
FSS:	SEATTLE FLIGHT SERVICE STATION
Attendance:	UNATNDD
Wind indicator:	yes
Segmented circle:	yes

Nearby radio navigation aids

VOR radial/distance		VOR name		Freq		Var
PSCr038/29.4		PASCO VOR/DME		113.75		15E
ALWr326/30.4		WALLA WALLA VOR/DME		116.40		14E

Heliport Services

Runway Information

Helipad H1

Dimensions:	200 x 200 ft. / 61 x 61 m
Surface:	asphalt
Latitude:	46-33.715667N
Longitude:	118-32.757000W
Elevation:	465.0 ft.
Traffic pattern:	left	left

Heliport Ownership and Management from official FAA records

Ownership:	Publicly-owned
Owner:	U.S. ARMY CORPS OF ENGINEERS 1215 E AINSWORTH AVE PASCO, WA 99301 Phone 509-282-3218
Manager:	ROBERT WITHAM LOWER MONUMENTAL LOCK AND DAM, 5520 DEVILS CANYON ROAD KAHLOTUS, WA 99335 Phone 509-282-7253

Additional Remarks

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

Instrument Procedures

There are no published instrument procedures at WN84.

Some nearby airports with instrument procedures:

KPSC - Tri-Cities Airport (30 nm SW)
KALW - Walla Walla Regional Airport (30 nm S)
KRLD - Richland Airport (35 nm SW)
KMWH - Grant County International Airport (50 nm NW)
KHRI - Hermiston Municipal Airport (53 nm SW)

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Area around WN84 (Lower Monumental Dam Heliport)

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Aerial photo

Sectional chart

Airport distance calculator
Flying to Lower Monumental Dam Heliport? Find the distance to fly. From to WN84

Sunrise and sunset

Times for 26-Feb-2026

	Local (UTC-8)	Zulu (UTC)
Morning civil twilight	06:10	14:10
Sunrise	06:40	14:40
Sunset	17:34	01:34
Evening civil twilight	18:05	02:05

Current date and time

Zulu (UTC)	27-Feb-2026 06:33:58
Local (UTC-8)	26-Feb-2026 22:33:58

METAR

KPSC 30nm SW	270553Z 20003KT 10SM CLR 06/M01 A3023 RMK AO2 SLP239 T00611011 10139 20050 51023
KALW 30nm S	270553Z AUTO 18010KT 10SM CLR 07/M02 A3022 RMK AO2 SLP241 T00671022 10133 20056 53011
KRLD 35nm SW	270615Z AUTO 00000KT 10SM CLR 07/01 A3023 RMK AO2 T00720013
KMWH 50nm NW	270552Z 24014KT 10SM CLR 06/M02 A3014 RMK AO2 SLP213 T00611017 10117 20061 51006

TAF

KPSC 30nm SW	270520Z 2706/2806 23008KT P6SM FEW250
KALW 30nm S	270520Z 2706/2806 18009KT P6SM FEW250 FM271800 23012KT P6SM SKC FM280200 18009KT P6SM FEW250

NOTAMs

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