AirNav: O12 - Grand Lake St Marys Seaplane Base

O12

Grand Lake St Marys Seaplane Base
St Marys, Ohio, USA

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FAA INFORMATION EFFECTIVE 29 OCTOBER 2026

Location

FAA Identifier:	O12
Lat/Long:	40-32-27.6700N 084-29-26.4300W 40-32.461167N 084-29.440500W 40.5410194,-84.4906750 (estimated)
Elevation:	871 ft. / 265 m (estimated)
From city:	5 miles W of ST MARYS, OH
Time zone:	UTC -4 (UTC -5 during Standard Time)
Zip code:	45822

Seaplane Base Operations

Seaplane Base use:	Open to the public
Activation date:	04/1995
Control tower:	no
ARTCC:	INDIANAPOLIS CENTER
FSS:	DAYTON FLIGHT SERVICE STATION
NOTAMs facility:	DAY (NOTAM-D service available)
Attendance:	APR-NOV 0800-1700 ARPT CLSD NOV 15 TO APR 1 & MEMORIAL & LABOR DAY.
Segmented circle:	no

Seaplane Base Communications

CTAF:	122.9
WX AWOS-3PT at AXV (9 nm E):	128.325 (419-753-2821)

ACFT OPRG AT GRAND LAKE ST MARYS SHOULD MNT TFC ON LAKEFIELD CTAF & NEIL ARMSTRONG CTAF.

Nearby radio navigation aids

VOR radial/distance		VOR name		Freq		Var
RODr312/25.5		ROSEWOOD VORTAC		117.50		05W
DQNr353/31.8		DAYTON VOR/DME		114.50		01W

Seaplane Base Services

Fuel available:

100LL
100LL:100LL AVBL ON REQ, PPR, CTC KOZY MARINA 419-394-8797.

Runway Information

Runway 9W/27W

Dimensions:	7000 x 4000 ft. / 2134 x 1219 m
Surface:	water
	RUNWAY 9W	RUNWAY 27W
Traffic pattern:	left	right
Markings:	buoys, in good condition	buoys, in good condition

Seaplane Base Ownership and Management from official FAA records

Ownership:	Publicly-owned
Owner:	OHIO DIV OF PARKS & REC 834 EDGEWATER DR SAINT MARYS, OH 45885-1132 Phone 419-394-3611
Manager:	DAVID FALER, ASST PARK MGR GRAND LAKE SAINT MARYS STATE PARK, 834 EDGEWATER DR SAINT MARYS, OH 45885-1132 Phone 419-394-3611 CELL 419-656-7060.

Additional Remarks

-	NO NGT OPS.
-	NO PUB DOCKS; PPR FOR PVT DOCK TIE UP; CALL KOZY MARINA 419-394-8797.
-	FOR CD CTC COLUMBUS APCH AT 614-338-8537.

Instrument Procedures

There are no published instrument procedures at O12.

Some nearby airports with instrument procedures:

KCQA - Lakefield Airport (5 nm SW)
KAXV - Neil Armstrong Airport (9 nm E)
KVNW - Van Wert County Airport (20 nm N)
KVES - Darke County Airport (20 nm S)
KAOH - Lima Allen County Airport (23 nm NE)

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Area around O12 (Grand Lake St Marys Seaplane Base)

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Aerial photo

Sectional chart

Airport distance calculator
Flying to Grand Lake St Marys Seaplane Base? Find the distance to fly. From to O12

Sunrise and sunset

Times for 31-Oct-2026

	Local (UTC-4)	Zulu (UTC)
Morning civil twilight	07:40	11:40
Sunrise	08:08	12:08
Sunset	18:35	22:35
Evening civil twilight	19:04	23:04

Current date and time

Zulu (UTC)	31-Oct-2026 14:23:18
Local (UTC-4)	31-Oct-2026 10:23:18

METAR

KAXV
9nm E

311355Z AUTO 10004KT 10SM OVC100 11/05 A3045 RMK AO2

TAF

KDAY 40nm S	311134Z 3112/0112 10010KT P6SM OVC100 FM312300 10006KT P6SM OVC100
KFWA 41nm NW	311120Z 3112/0112 08006KT 6SM -SHRA OVC080 FM311500 12008KT P6SM BKN080
KFDY 47nm NE	311129Z 3112/0112 11008KT P6SM OVC100
KFFO 48nm SE	311105Z 3111/0117 08006KT 9999 BKN100 BKN250 QNH3035INS BECMG 3113/3114 10009KT 9999 FEW065 BKN100 OVC250 QNH3032INS TEMPO 3115/3122 12010G15KT BECMG 3123/3124 10006KT 9999 SCT055 OVC090 QNH3031INS WND 15006KT AFT 0109 BECMG 0112/0113 19009KT 9999 SCT035 BKN050 OVC080 620909 QNH3036INS TX19/3120Z TN10/3111Z

NOTAMs

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NOTAMs are issued by the DoD/FAA and will open in a separate window not controlled by AirNav.

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