Alton Bay Seaplane Base & Ice Runway
Daylight today(Aug 30, 2026, local time)
About 13h 18m 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 Alton Bay Seaplane Base & Ice Runway
Alton Bay Seaplane Base is a state-owned, public-use seaplane base located in a cove of Lake Winnipesaukee. The base is two nautical miles (4 km) north of the central business district of Alton Bay, in Belknap County, New Hampshire, United States.
Summary from Wikipedia, photo via Wikimedia Commons, licensed under CC BY-SA.
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 |
|---|---|---|---|---|---|
| 01 / 19 | 2,600 ft / 792 m | 100 ft | Water-e | Unlit | Open |
Tall obstacles nearby
| Obstacle | Height AGL | Top (MSL) | Lit |
|---|---|---|---|
| Obstacle | 591 ft | 997 ft | — |
Tallest obstacles within ~10 nm. Data via OpenAIP. Reference only — consult official charts.
Nearby airports
Great-circle distance and true bearing from Alton Bay Seaplane Base & Ice Runway.
Frequently asked questions
Where is Alton Bay Seaplane Base & Ice Runway located?
Alton Bay Seaplane Base & Ice Runway is seaplane base located in Alton Bay, United States, at an elevation of 504 ft (154 m).
How many runways does Alton Bay Seaplane Base & Ice Runway have?
Alton Bay Seaplane Base & Ice Runway has 1 runway, the longest being 2,600 ft / 792 m.
What time zone is Alton Bay Seaplane Base & Ice Runway in?
Alton Bay Seaplane Base & Ice Runway is in the America/New York time zone (UTC-04:00).
What is the magnetic variation at Alton Bay Seaplane Base & Ice Runway?
The magnetic variation (declination) at Alton Bay Seaplane Base & Ice Runway 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 Alton Bay Seaplane Base & Ice Runway?
The nearest airport to Alton Bay Seaplane Base & Ice Runway is Locke Lake Airport (NH15), about 5.5 nm to the s, followed by Therriaults Landing Airport and Laconia Municipal Airport.
Is the information on this page suitable for flight planning?
No. Alton Bay Seaplane Base & Ice Runway data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.