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 24-Feb-2026

	Local (UTC-8)	Zulu (UTC)
Morning civil twilight	06:13	14:13
Sunrise	06:44	14:44
Sunset	17:31	01:31
Evening civil twilight	18:02	02:02

Current date and time

Zulu (UTC)	25-Feb-2026 00:01:33
Local (UTC-8)	24-Feb-2026 16:01:33

METAR

KPSC 30nm SW	242353Z 29006KT 7SM OVC012 06/05 A2990 RMK AO2 RAE26 SLP126 P0001 60001 T00610050 10072 20056 56005
KALW 30nm S	242353Z 00000KT 10SM BKN008 OVC041 06/03 A2985 RMK AO2 RAE33 SLP116 P0000 60001 T00560033 10056 20044 56016
KRLD 35nm SW	242355Z AUTO 29003KT 4SM -RA SCT009 OVC017 07/07 A2990 RMK AO2 T00700066 10076 20061
KMWH 50nm NW	242352Z 21003KT 6SM -RA BKN015 OVC026 05/02 A2988 RMK AO2 SLP126 P0004 60005 T00500022 10056 20044 56012

TAF

KPSC 30nm SW	241737Z 2418/2518 VRB03KT 6SM -RA BR BKN009 OVC040 FM242000 33005KT 6SM BR OVC015 FM250000 27003KT 4SM BR OVC015 FM250700 23004KT 6SM BR OVC025
KALW 30nm S	241737Z 2418/2518 23002KT 3SM -RA BR OVC004 FM250000 23004KT 2SM -RA BR OVC007 FM250600 20005KT 4SM -RA BR OVC003

NOTAMs

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