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78U Snake River Seaplane Base
Lewiston, Idaho, USA

GOING TO LEWISTON?

FAA INFORMATION EFFECTIVE 15 MAY 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 -7 (UTC -8 during Standard 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 (208-746-4185)

Nearby radio navigation aids

VOR radial/distance  VOR name  Freq  Var
MQGr243/8.0NEZ PERCE VOR/DME114.4520E
PUWr140/19.7PULLMAN VOR/DME117.1520E

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: leftleft
Obstructions: none150 ft. pline, marked, 3780 ft. from runway, 25:1 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
5100 HELLS GATE RD
LEWISTON, ID 83501
Phone 208-799-5015

Additional Remarks

- PLINES CROSS SNAKE RIVER NORTH, SOUTH, ABOVE & BELOW LNDG AREA. BRIDGE ACROSS SNAKE RIVER N 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)
  
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Area around 78U (Snake River Seaplane Base)
 
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Sectional chart

 
Airport distance calculator
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From to 78U

Sunrise and sunset
Times for 29-May-2025
 Local
(UTC-7)		 Zulu
(UTC)
Morning civil twilight04:2511:25
Sunrise05:0212:02
Sunset20:2903:29
Evening civil twilight21:0604:06

Current date and time
Zulu (UTC)  29-May-2025 16:34:23
Local (UTC-7)  29-May-2025 09:34:23
 
METAR
KLWS 
2nm E 		291556Z 00000KT 10SM CLR 23/12 A2992 RMK AO2 SLP119 T02330117 $
TAF
KLWS 
2nm E 		291120Z 2912/3012 VRB06KT P6SM FEW050 SCT130 FM291900 30011G24KT P6SM BKN070 PROB30 2919/2923 -SHRA BKN050 FM292300 30015G25KT P6SM SCT070 BKN100 FM300300 26008KT P6SM FEW090
NOTAMs
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