AirNav: 78U - Snake River Seaplane Base

78U

Snake River Seaplane Base
Lewiston, Idaho, USA

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FAA INFORMATION EFFECTIVE 25 DECEMBER 2025

Location

FAA Identifier:	78U
Lat/Long:	46-21-52.7000N 117-03-43.2300W 46-21.878333N 117-03.720500W 46.3646389,-117.0620083 (estimated)
Elevation:	735 ft. / 224 m (estimated)
Variation:	19E (1985)
From city:	3 miles SW of LEWISTON, ID
Time zone:	UTC -8 (UTC -7 during Daylight Saving Time)
Zip code:	99403

Seaplane Base Operations

Seaplane Base use:	Open to the public
Activation date:	05/1976
Control tower:	no
ARTCC:	SEATTLE CENTER
FSS:	BOISE FLIGHT SERVICE STATION
NOTAMs facility:	BOI (NOTAM-D service available)
Attendance:	APR-OCT 0700-DUSK, NOV-MAR IREG IREG
Wind indicator:	no
Segmented circle:	no

Seaplane Base Communications

CTAF:	122.9
WX ASOS at LWS (2.0 nm E):	135.575 (208-285-3657)

Nearby radio navigation aids

VOR radial/distance		VOR name		Freq		Var
MQGr243/8.0		NEZ PERCE VOR/DME		114.45		20E
PUWr140/19.7		PULLMAN VOR/DME		117.15		20E

Seaplane Base Services

Parking:	tiedowns
Airframe service:	NONE
Powerplant service:	NONE
Bottled oxygen:	NONE
Bulk oxygen:	NONE

Runway Information

Runway N/S

Dimensions:	3000 x 150 ft. / 914 x 46 m
Surface:	water
Operational restrictions:	WATERLANE LENGTH AND WIDTH VARIES.
	RUNWAY N	RUNWAY S
Traffic pattern:	left	left
Obstructions:	none	150 ft. pline, marked, 3300 ft. from runway, 20:1 slope to clear

Seaplane Base Ownership and Management from official FAA records

Ownership:	Publicly-owned
Owner:	US ARMY CORPS OF ENGINEERS CITY-COUNTY ARPT/OCR DIV WALLA WALLA, WA 99362 Phone 509-522-6704
Manager:	HELLS GATE STATE PARK - JEFF SMITH 5100 HELLS GATE RD LEWISTON, ID 83501 Phone 208-799-5015

Additional Remarks

-	PLINES X SNAKE RIVER NORTH, SOUTH, ABV & BLO LNDG AREA. BRIDGE ACROSS SNAKE RIVER 2 NM NORTH OF LNDG AREA.
-	LNDG AREA WITHIN LEWISTON-NEZ PERCE COUNTY ARPT TFC AREA; CTC LWS ATCT ON TWR/CTAF 119.4.
-	NO BEACHING GEAR OR MOORING BUOYS AVBL.
-	HEAVY BOAT TFC INVOF SEAPLANE BASE.
-	FOR CD CTC SEATTLE ARTCC AT 253-351-3694.

Instrument Procedures

There are no published instrument procedures at 78U.

Some nearby airports with instrument procedures:

KLWS - Lewiston/Nez Perce County Airport (2 nm E)
KPUW - Pullman/Moscow Regional Airport (23 nm N)
KGIC - Idaho County Airport (47 nm SE)
KALW - Walla Walla Regional Airport (53 nm W)
KJSY - Joseph State Airport (61 nm S)

Loc | Ops | Rwys | IFR | FBO | Links
Com | Nav | Svcs | Stats | Notes

Area around 78U (Snake River Seaplane Base)

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Aerial photo

Sectional chart

Airport distance calculator
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Sunrise and sunset

Times for 07-Jan-2026

	Local (UTC-8)	Zulu (UTC)
Morning civil twilight	06:58	14:58
Sunrise	07:32	15:32
Sunset	16:17	00:17
Evening civil twilight	16:52	00:52

Current date and time

Zulu (UTC)	08-Jan-2026 00:30:06
Local (UTC-8)	07-Jan-2026 16:30:06

METAR

KLWS
2nm E

072356Z AUTO 16004KT 10SM BKN120 06/M02 A2972 RMK AO2 SLP072 T00561022 10072 20056 56013

TAF