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11WN Diedrich Seaplane Base
Lodi, Wisconsin, USA

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FAA INFORMATION EFFECTIVE 11 JUNE 2026

Location

FAA Identifier: 11WN
Lat/Long: 43-21-14.9500N 089-34-16.4300W
43-21.249167N 089-34.273833W
43.3541528,-89.5712306
(estimated)
Elevation: 774 ft. / 236 m (estimated)
Variation: 01W (1995)
From city: 3 miles NW of LODI, WI
Time zone: UTC -5 (UTC -6 during Standard Time)
Zip code: 53555

Seaplane Base Operations

Seaplane Base use: Private use. Permission required prior to landing
Activation date: 03/1999
Control tower: no
ARTCC: CHICAGO CENTER
FSS: GREEN BAY FLIGHT SERVICE STATION
Attendance: UNATNDD
Wind indicator: yes
Segmented circle: no

Seaplane Base Communications

WX AWOS-3 at DLL (13 nm NW): 118.325 (608-356-1071)
WX AWOS-3 at C29 (14 nm S): 118.675 (608-833-1686)
WX ASOS at MSN (16 nm SE): PHONE 608-410-1285

Nearby radio navigation aids

VOR radial/distance  VOR name  Freq  Var
DLLr142/14.5DELLS VORTAC117.0003E
MSNr318/16.1MADISON VORTAC108.6003E

 
NDB name  Hdg/Dist  Freq  Var  ID
ROCK RIVER287/38.537101WRYV .-. -.-- ...-

Seaplane Base Services

Runway Information

Runway 9W/27W

Dimensions: 3000 x 350 ft. / 914 x 107 m
Surface: water
RUNWAY 9W  RUNWAY 27W
Traffic pattern: leftleft

Runway 17W/35W

Dimensions: 1800 x 350 ft. / 549 x 107 m
Surface: water
RUNWAY 17W  RUNWAY 35W
Traffic pattern: leftleft

Seaplane Base Ownership and Management from official FAA records

Ownership: Privately-owned
Owner: LAWRENCE F. DIEDRICH
W11305 COUNTY HWY V
LODI, WI 53555
Phone 608-592-3519
Manager: LAWRENCE F. DIEDRICH
W11305 COUNTY HWY V.
LODI, WI 53555
Phone 608-592-3519

Additional Remarks

- FOR CD CTC CHICAGO ARTCC AT 630-906-8921.

Instrument Procedures

There are no published instrument procedures at 11WN.

Some nearby airports with instrument procedures:

91C - Sauk/Prairie Airport (9 nm SW)
C47 - Portage Municipal Airport (13 nm N)
KDLL - Baraboo/Wisconsin Dells Regional Airport (13 nm NW)
C29 - Middleton Municipal Airport - Morey Field (14 nm S)
KMSN - Dane County Regional Airport-Truax Field (16 nm SE)
  
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Area around 11WN (Diedrich Seaplane Base)
 
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Sectional chart

 
Airport distance calculator
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From to 11WN

Sunrise and sunset
Times for 03-Jul-2026
 Local
(UTC-5)		 Zulu
(UTC)
Morning civil twilight04:4809:48
Sunrise05:2410:24
Sunset20:4101:41
Evening civil twilight21:1702:17

Current date and time
Zulu (UTC)  03-Jul-2026 05:51:27
Local (UTC-5)  03-Jul-2026 00:51:27
 
METAR
KDLL 
13nm NW 		030535Z AUTO 00000KT 10SM SCT120 20/19 A3000 RMK AO2 T01950190
KC29 
14nm S 		030535Z AUTO 00000KT 10SM CLR 21/19 A3003 RMK AO1 T02120188
KMSN 
16nm SE 		030453Z AUTO 18007KT 10SM FEW100 22/20 A2995 RMK AO2 SLP137 T02170200 $
KC35 
21nm NW 		030535Z AUTO 00000KT 10SM CLR 20/19 A2999 RMK AO2 T01980192 PWINO
TAF
KMSN 
16nm SE 		030129Z 0301/0324 VRB06KT 6SM -SHRA SCT025 OVC050 FM030500 VRB04KT P6SM SCT050 BKN100 FM031600 23007KT P6SM SCT050 BKN100
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