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WA41 Lake Sawyer Double EE Seaplane Base
Black Diamond, Washington, USA

GOING TO BLACK DIAMOND?

FAA INFORMATION EFFECTIVE 04 SEPTEMBER 2025

Location

FAA Identifier: WA41
Lat/Long: 47-20-00.0000N 122-02-00.0000W
47-20.000000N 122-02.000000W
47.3333333,-122.0333333
(estimated)
Elevation: 520 ft. / 158 m (estimated)
From city: 3 miles NNW of BLACK DIAMOND, WA
Time zone: UTC -7 (UTC -8 during Standard Time)
Zip code: 98010

Seaplane Base Operations

Seaplane Base use: Private use. Permission required prior to landing
Activation date: 11/2018
Control tower: no
ARTCC: SEATTLE CENTER
FSS: SEATTLE FLIGHT SERVICE STATION
Attendance: 
Segmented circle: no

Seaplane Base Communications

WX ASOS at RNT (12 nm NW): 126.95 (425-255-6080)
WX ASOS at SEA (13 nm NW): PHONE 206-214-2592
WX ASOS at BFI (16 nm NW): PHONE 206-658-6435
WX AWOS-3 at PLU (17 nm SW): 128.575 (253-848-2748)

Nearby radio navigation aids

VOR radial/distance  VOR name  Freq  Var
SEAr100/12.8SEATTLE VORTAC116.8019E
PAEr144/36.6PAINE VOR/DME110.6020E

Seaplane Base Services

Runway Information

Runway 15W/33W

Dimensions: 6055 x 300 ft. / 1846 x 91 m
Surface: water, in fair condition
RUNWAY 15W  RUNWAY 33W
Traffic pattern: rightright

Seaplane Base Ownership and Management from official FAA records

Ownership: Privately-owned
Owner: ERIC EKNES
29810 224TH AVE SE
BLACK DIAMOND, WA 98010
Phone 206-618-2308
Manager: ERIC EKNES
29810 224TH AVE SE
BLACK DIAMOND, WA 98010
Phone 206-618-2308

Instrument Procedures

There are no published instrument procedures at WA41.

Some nearby airports with instrument procedures:

S50 - Auburn Municipal Airport (8 nm W)
KRNT - Renton Municipal Airport (12 nm NW)
KSEA - Seattle-Tacoma International Airport (13 nm NW)
KBFI - Boeing Field/King County International Airport (16 nm NW)
KPLU - Pierce County Airport/Thun Field (17 nm SW)
  
Loc | Ops | Rwys | IFR | FBO | Links
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Aerial photo
No photo
 
Airport distance calculator
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From to WA41

Sunrise and sunset
Times for 07-Sep-2025
 Local
(UTC-7)		 Zulu
(UTC)
Morning civil twilight06:0513:05
Sunrise06:3613:36
Sunset19:3602:36
Evening civil twilight20:0703:07

Current date and time
Zulu (UTC)  07-Sep-2025 21:28:36
Local (UTC-7)  07-Sep-2025 14:28:36
 
METAR
KRNT 
12nm NW 		072053Z 19003KT 10SM FEW026 22/14 A3008 RMK AO2 SLP189 T02220139 58004
KSEA 
13nm NW 		072053Z 21007KT 10SM FEW021 BKN050 BKN120 20/14 A3010 RMK AO2 SLP196 T02000144 58001 $
KPLU 
17nm SW 		072115Z AUTO 00000KT 10SM OVC022 20/16 A3010 RMK AO2
KBFI 
17nm NW 		072053Z 26006KT 10SM FEW027 21/14 A3008 RMK AO2 SLP185 T02110144 58003
KTCM 
22nm SW 		072100Z AUTO 25005KT 10SM FEW021 SCT026 OVC036 21/15 A3008 RMK AO2 VIS 2 1/4 RWY16/34 SLP189 $
KTIW 
23nm W 		072053Z 15006KT 10SM SCT016 BKN039 18/14 A3009 RMK AO2 SLP187 T01830144 58001
TAF
KSEA 
13nm NW 		071721Z 0718/0824 17007KT P6SM SCT012 BKN030 BKN050 TEMPO 0718/0720 BKN012 FM072200 21008KT P6SM BKN035 BKN050 FM080000 24004KT P6SM SCT035 BKN050 FM080900 18004KT P6SM OVC018 FM081900 23005KT P6SM SCT022 BKN040 FM082200 25006KT P6SM SCT050 BKN100
KBFI 
17nm NW 		071721Z 0718/0818 16006KT P6SM SCT017 BKN030 BKN050 TEMPO 0718/0720 BKN016 FM072100 19006KT P6SM BKN035 BKN050 FM080000 20006KT P6SM SCT035 BKN050 FM080900 VRB03KT P6SM OVC022
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