Snake River Seaplane Base

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METAR: METAR KLWS 260156Z 22010G28KT 10SM FEW070 SCT080 OVC100 11/03 A2969 RMK AO2 PK WND 22028/0148 WSHFT 0043 SLP056 T01060033 $

TAF: TAF KLWS 260010Z 2600/2624 VRB03KT 6SM BR SCT002 OVC070 TEMPO 2600/2604 VRB15G30KT 2SM -SHRA SCT001 OVC045 FM260800 13003KT 6SM -RA BKN060 FM261400 13004KT 5SM -RA OVC022 FM261700 VRB04KT 2SM -RA BKN013 FM262000 20005KT P6SM BKN025 PROB30 2620/2624 6SM -RA OVC020

Reporting Station: KLWS (2.0 NM at True Heading of 72)
Visibility: 10+SM
Flight Category: VFR
Altimeter: 1005.5
Temperature: 10.6 C (51.08 F)
Dewpoint: 3.3 C (37.94 F)

Location

Latitude: 
 46-21-52.7000N (46.364639)
Longitude: 
 117-03-43.2300W (-117.062008)
Elevation: 
 735.0 feet MSL (224 m MSL)
Magnetic Variation: 
 13.5 E (as of December 2025 from WMM2020 model)
Time Zone: 
 UTC -8.0 (Standard Time)
UTC -7.0 (Daylight Savings Time)
From City: 
 03 N.M. SW of Lewiston, Idaho
Found On: 
 Seattle Chart
FAA Region: 
 ANM

Contacts

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

Operations

Airport Status: 
 Operational
Facility Use: 
 Public
Type: 
 Seaplane Base
Activation Date: 
 05/1976
Control tower: 
 No
Attendance (Months/Days/Hours): 
 Months/Days/Hours
APR-OCT/ALL/0700-DUSK
Boundary ARTCC: 
 ZSE (Seattle)
Responsible ARTCC: 
 ZSE (Seattle)
Segmented Circle Indicator: 
 No
Traffic Pattern Altitude (MSL): 
 1735 feet (529 m)
NOTAMs Facility: 
 BOI
NOTAM-D Service: 
 Yes

Based Aircraft

Annual Operations (as of )

Communications

CTAF:  122.900

       

    Fixed Based Operators (FBOs) & Fuel

    (Click on a business for detail)
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    Area Code: 208
    Business Name Frequency Phone Fuel Grade

    Flight Service Stations

    Primary Alternate
    FSS on Field:  N
    FSS Name (ID):  Boise(BOI)
    Frequency: 
    Toll Free Phone:  1-800-WX-BRIEF

    Instrument Procedures / Charts

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    Navigation Aids (Navaids) near 78U

    Navigational Aid (NAVAID) distances from the airport are listed in Nautical Miles (NM).

    Nearby Airports with Fuel

    Dist (NM) Name (Airport IDs) True Hdg Mag Hdg Fuel Grade
    2.0 Lewiston/Nez Perce County Airport
    (LWS KLWS LWS)    		 72 59 100, 100LL, Jet A
    22.7 Pullman/Moscow Regional Airport
    (PUW KPUW PUW)    		 354 340 100LL, Jet A
    25.1 Craigmont Municipal Airport
    (S89)    		 105 92 100LL
    33.0 Port Of Whitman Business Air Center Airport
    (S94)    		 334 320 100LL
    33.4 Orofino Municipal Airport
    (S68)    		 76 63 100LL
    36.1 Cottonwood Municipal Airport
    (S84)    		 122 109 100LL
    44.3 Kamiah Municipal Airport
    (S73)    		 100 87 100LL
    46.5 Idaho County Airport
    (KGIC GIC)    		 122 109 100LL, Jet A
    52.3 Willard Field Airport
    (73S)    		 0 346 100LL
    53.3 Walla Walla Regional Airport
    (ALW KALW ALW)    		 252 238 100LL, Jet A
    54.4 Rosalia Municipal Airport
    (72S)    		 344 330 100LL
    57.0 Enterprise Municipal Airport
    (8S4)    		 188 175 100LL
    59.4 Martin Field Airport
    (S95)    		 251 237 100LL
    61.0 Jack A Buell Airport
    (S72)    		 18 4 100LL
    75.6 La Grande/Union County Airport
    (LGD KLGD LGD)    		 211 197 100LL, Jet A
    77.7 Spokane International Airport
    (GEG KGEG GEG)    		 345 331 100, 100LL, Jet A
    79.3 Brooks Seaplane Base
    (S76)    		 8 354 100LL
    79.5 Shoshone County Airport
    (S83)    		 26 13 100LL
    79.8 Felts Field Airport
    (SFF KSFF SFF)    		 352 338 100LL, Jet A-1+
    84.4 Eastern Oregon Regional At Pendleton Airport
    (PDT KPDT PDT)    		 242 228 100LL, Jet A-1+, MOGAS

    Notices to Airmen (NOTAMS)

    NOTAMs

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    NOTAMS within

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    NM of 78U

    NOTAM Flight Path Search (Enter from two to five locations below)

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    NM of 78U

    Remarks

    A110-1 PLINES X SNAKE RIVER NORTH, SOUTH, ABV & BLO LNDG AREA. BRIDGE ACROSS SNAKE RIVER 2 NM NORTH OF LNDG AREA.
    A110-2 LNDG AREA WITHIN LEWISTON-NEZ PERCE COUNTY ARPT TFC AREA; CTC LWS ATCT ON TWR/CTAF 119.4.
    A110-3 NO BEACHING GEAR OR MOORING BUOYS AVBL.
    A110-4 HEAVY BOAT TFC INVOF SEAPLANE BASE.
    A110-5 FOR CD CTC SEATTLE ARTCC AT 253-351-3694.
    A30-N/S WATERLANE LENGTH AND WIDTH VARIES.
    A75 ACFT MAY DOCK AT MARINA - NORTH OF CAMPGND. IF SPACE IS AVBL.

    Runways

    Runway Summary

    Runways: N/S
    Longest Runway: N/S is 3000 ft (914 m) long
    Runways with an Instrument Approach:

    78U Airport Runway Details

    Waterway N/S  3000 ft x 150 ft (914 m x 46 m)
    Surface:  Water - No special surface treatment

    Waterway N

    Runway S
    Glide Path Angle: 
    		 0.0 degrees 0.0 degrees
    Object at End: 
    		 PLINE
    Object Height: 
    		 150
    Object Marked/Lighted?: 
    		 Marked
    Distance from End: 
    		 3300
    Object Centerline Offset: 
    		 0 ft. left and right of centerline

    Services

    Airframe Repair: 
    		 Major
    Powerplant Repair: 
    		 Major
    Fuel Available: 
    		 100LL, Jet A-1+, MOGAS
    Landing Fees: 
    		 No
    Parking: 
    		 Hangars and tiedowns available
    Other Services: 
    		 Helicopter instruction

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    Maps & Diagrams

    78U Sectional

    Flight Planning
    at skyvector.com

    78U Diagram


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