Alton Bay Seaplane Base & Ice Rwy (B18)

Seaplane base information: Alton Bay, NH, United States. Search for another airport below.

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Location and general information

Runway 01W/19W pwrline marked with orange balls 1000 ft S of threshold at S end; less than 30 ft HGT along roadway.
All seaplane tkofs and ldgs must be N of the bandstand. All TVL S of the bandstand must not exceed headway SPD.
For seaplane parking and ice runway conditions call 603-271-7398.
For CD contact Boston approach 603-594-5552.
Takeoff and landing using runway 19W prohibited JAN - mar.

Source: FAA Airport Data and Information Portal (ADIP), effective October 29, 2026. View this airport on the FAA site

Runway	Size	Surface
01W / 19W	2,600 × 100 ft	Water, excellent

Codes, elevation and runways: FAA airport data (NASR), effective 2026-10-29. Reference only, not for navigation.

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