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 11 JUNE 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 NE 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)

Loc | Ops | Rwys | IFR | FBO | Links
Com | Nav | Svcs | Stats | Notes

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 28-Jun-2026

	Local (UTC-4)	Zulu (UTC)
Morning civil twilight	05:37	09:37
Sunrise	06:11	10:11
Sunset	21:12	01:12
Evening civil twilight	21:45	01:45

Current date and time

Zulu (UTC)	28-Jun-2026 04:19:22
Local (UTC-4)	28-Jun-2026 00:19:22

METAR

KAXV
9nm E

280335Z AUTO 08004KT 10SM SCT046 BKN070 OVC095 21/20 A2996 RMK AO2

TAF

KDAY 40nm S	271738Z 2718/2818 01005KT P6SM BKN025 FM272300 07004KT P6SM BKN035 FM280500 14003KT P6SM BKN015 FM280900 12003KT 4SM BR OVC007 FM281400 16004KT P6SM OVC012 FM281700 28005KT P6SM BKN022
KFWA 41nm NW	271720Z 2718/2818 09009KT P6SM SCT018 OVC029 FM272100 08005KT P6SM OVC050 TEMPO 2809/2812 4SM BR
KFDY 47nm NE	272029Z 2720/2818 06008KT P6SM OVC025 FM280800 05005KT 4SM BR OVC025 FM281300 05006KT P6SM BKN035
KFFO 48nm SE	271900Z 2719/2901 18009KT 9999 SCT020 BKN030 BKN050 QNH2992INS TEMPO 2719/2801 18012KT 6000 -SHRA BR BKN015 OVC025 BECMG 2801/2803 06009KT 4800 BR BKN015 QNH2990INS BECMG 2803/2805 03009KT 9999 NSW SCT020 SCT050 QNH2991INS BECMG 2810/2811 06009KT 9999 VCSH BKN025 BKN040 QNH2990INS BECMG 2823/2824 03009KT 9999 NSW OVC040 QNH2992INS TX29/2819Z TN21/2811Z

NOTAMs

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