FAA facility Seaplane base

ALTON BAY

ALTON BAY, NEW HAMPSHIRE FAA B18 Open to the public

Open View on OpenStreetMap

Runways

1 record · drawn to relative scale

01W/19W 2,600 × 100 ft · Water (excellent) · Unlighted

01W 19W

Runway-end details

Runway 01W/19W end details
End	True hdg	ILS	Glide slope aid	Approach lights	Displaced thr	Declared distances
01W	—	—	—	—	—	—
19W	—	—	—	—	—	—

Communications

2 published frequencies

Published communications frequencies
Use	Frequency	Hours
CTAF	122.8	—
UNICOM	122.8	—

FAA listing history

Identities observed in NASR snapshots

ALTON BAY Observed 2024-06-13 through 2026-07-09 B18

Dates describe available FAA snapshots, not exact opening, closure or construction dates.

Material changes

First observed in NASR cycles

No public material changes are recorded yet.

Facility facts

FAA / ICAO: B18
Type: Seaplane base C
Status: Open
Ownership: Publicly owned
Use: Open to the public
Activated: 1994-02
Part 139: Not certificated
Fuel: Not listed
Repair: Not listed
Tower: No control tower

Location

City: ALTON BAY, NH
County: Belknap
FAA region: New England region
Coordinates: 43.47758, -71.23700
Elevation: 504.0 ft

View coordinates on OpenStreetMap

Wildlife strikes

No unambiguous FAA wildlife-strike airport match is available for this facility.

FAA NASR cycle effective 2026-08-06. Operational information changes every cycle — consult current FAA publications, the Chart Supplement and NOTAMs before flight.