AirNav: WN84 - Lower Monumental Dam Heliport

WN84

Lower Monumental Dam Heliport
Kahlotus, Washington, USA

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FAA INFORMATION EFFECTIVE 06 AUGUST 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 -7 (UTC -8 during Standard 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 01-Sep-2026

	Local (UTC-7)	Zulu (UTC)
Morning civil twilight	05:44	12:44
Sunrise	06:15	13:15
Sunset	19:33	02:33
Evening civil twilight	20:04	03:04

Current date and time

Zulu (UTC)	01-Sep-2026 22:46:17
Local (UTC-7)	01-Sep-2026 15:46:17

METAR

KPSC 30nm SW	012153Z 35003KT 10SM CLR 28/11 A2967 RMK AO2 SLP043 T02780106
KALW 30nm S	012153Z 14004KT 10SM CLR 25/08 A2972 RMK AO2 SLP057 T02500078
KRLD 35nm SW	012235Z AUTO 17006KT 10SM CLR 30/09 A2965 RMK AO2 T03000087
KMWH 50nm NW	012152Z 18009G18KT 10SM CLR 24/08 A2970 RMK AO2 SLP051 T02390083

TAF

KPSC 30nm SW	011720Z 0118/0218 19008KT P6SM BKN250 FM020800 21010G15KT P6SM BKN240 PROB30 0215/0218 -SHRA OVC050
KALW 30nm S	011720Z 0118/0218 22011KT P6SM BKN250 FM020400 19011KT P6SM SCT250 FM020700 19014KT P6SM BKN250 PROB30 0215/0218 -SHRA OVC050

NOTAMs

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