Grand Marais/Cook County Seaplane Base Seaplane Base
0G5 · Grand Marais, MN · Non-towered
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Weather
METAR observed
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TAF forecast
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Sun & FAA night2026-08-07 · night begins 09:03 PM
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:10 AM | 10:10Z |
| Sunrise | 05:46 AM | 10:46Z |
| Sunset | 08:28 PM | 01:28Z |
| Evening civil twilight Loggable night begins | 09:03 PM | 02:03Z |
Plan a flight from 0G5
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
Airspace hazards
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Runways
| Runway | Length | Your margin |
|---|---|---|
| 03/21 | 3,000 ft | |
| 09/27 | 15,000 ft |
Prefer one flat page? Full runway details for 0G5 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 0G5 kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Source: FAA NASR (current 28-day cycle).
Prefer one flat list? All 0G5 frequencies →
Charts & procedures
Airport info
Airport information
- FAA LID
- 0G5
- Coordinates
- 47.8263, -90.3835
- Elevation
- 1,635 ft MSL
- Magnetic variation
- 0W
- Sectional chart
- GREEN BAY
- Airport use
- Public
- Control tower
- No
- ARTCC
- MINNEAPOLIS (ZMP)
- Flight service (FSS)
- PRINCETON · 122.2 · 1-800-WX-BRIEF
- NOTAM facility
- PNM
- Attendance
- UNATNDD
- Segmented circle
- No
- Activated
- 1947/09
- Distance from city
- 6 NW
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 122.8 — confirm the click sequence in the Chart Supplement ↗
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Services fuel · repairs · oxygen · attendance
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- MAJOR
- Powerplant service
- MAJOR
- Parking
- tiedowns
- Other services
- BCHGR
Ownership & management 2 contacts
Remarks FAA · 3 notes
General
- CUSTOMS AVBL, MAY-OCT; CALL 218-475-2244.
- FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588.
Contact
- AFTER HOURS CONTACT 218-387-2012
Nearby airports
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Also nearby: 83MN Loon Lake Seaplane Base (private) (20 NM) · M56 Gunflint Lodge Seaplane Base (21 NM) · WS19 Petit Cache Airport (private) (59 NM) · M96 US Forest Service Seaplane Base (61 NM)
About 0G5
Grand Marais/Cook County Seaplane Base (0G5) is a seaplane base in Grand Marais, MN, at 1,635 ft MSL. It has 2 runways, the longest 15,000 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 0G5, refreshed from the Aviation Weather Center and FAA NASR.
Does 0G5 have a control tower?
No. Grand Marais/Cook County Seaplane Base is a non-towered (pilot-controlled) seaplane base; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 0G5?
Grand Marais/Cook County Seaplane Base has 2 runways; the longest is 15,000 ft. See the Runways section for headings, surface, and lighting.
Where is 0G5?
Grand Marais/Cook County Seaplane Base is in Grand Marais, MN, at an elevation of 1,635 ft MSL. Coordinates: 47.8263, -90.3835.
Fly out of 0G5 often?
Save 0G5 as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 0G5 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.