Barndoor Island Seaplane Base
Daylight today(Sep 1, 2026, local time)
About 13h 13m of daylight. Civil twilight (dawn/dusk) approximates the FAA definition of night for logging and currency. Times are computed and approximate — verify with official sources.
About Barndoor Island Seaplane Base
Barndoor Island Seaplane Base is a seaplane base in Alton, United States. It sits at an elevation of 504 ft (154 m) and has 1 runway, the longest 4,086 ft / 1,245 m. It observes America/New York local time. The nearest airport is Mountain View Field (NH31), about 6.8 nm to the nne.
Summary generated from this airport’s structured data — reference only.
Live traffic nearby
Aircraft currently within ~40 nm, from live ADS-B. Positions are approximately real-time — not for navigation.
Live ADS-B by adsb.lol & the OpenSky Network. Not for navigation.
Map
Runway centrelines, navaids and overlapping airspace. Tiles © OpenStreetMap contributors. Reference only — not for navigation.
Runways (1)
| Runway | Length | Width | Surface | Lighting | Status |
|---|---|---|---|---|---|
| 11W / 29W | 4,086 ft / 1,245 m | 500 ft | Wat | Unlit | Open |
Nearby airports
Great-circle distance and true bearing from Barndoor Island Seaplane Base.
Frequently asked questions
Where is Barndoor Island Seaplane Base located?
Barndoor Island Seaplane Base is seaplane base located in Alton, United States, at an elevation of 504 ft (154 m).
How many runways does Barndoor Island Seaplane Base have?
Barndoor Island Seaplane Base has 1 runway, the longest being 4,086 ft / 1,245 m.
What time zone is Barndoor Island Seaplane Base in?
Barndoor Island Seaplane Base is in the America/New York time zone (UTC-04:00).
What is the magnetic variation at Barndoor Island Seaplane Base?
The magnetic variation (declination) at Barndoor Island Seaplane Base is approximately 14.1° W, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.
What airports are near Barndoor Island Seaplane Base?
The nearest airport to Barndoor Island Seaplane Base is Mountain View Field (NH31), about 6.8 nm to the nne, followed by Laconia Municipal Airport and Therriaults Landing Airport.
Is the information on this page suitable for flight planning?
No. Barndoor Island Seaplane Base data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.