B18
Alton Bay Seaplane Base
Alton Bay, New HampshireElevation 504 ftSeaplane base
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Runway detail & declared distances
01W/19W
RWY 01W
RWY 19W
Runway data from the FAA NASR dataset (effective 2026-06-11). Verify with the current Chart Supplement and NOTAMs.
AIRPORT INFORMATION
Facility & services
Alton Bay Seaplane Base is in Alton Bay, New Hampshire. Field elevation 504 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.
OPERATIONS & CONTACT
OwnershipPublicly owned
UseOpen to the public
TypeSeaplane base
ManagerJASON LEAVITT
Manager phone603-545-2315
AttendedUNATNDD
CHARTS & AIRSPACE
ICAO / IATAB18
SectionalNEW YORK
Center (ARTCC)BOSTON
Flight service (AFSS)BANGOR
RegionNew Hampshire
CountryUnited States
Coordinates43.4776, -71.2370
Distance from city2 NM N
SERVICES & LIGHTING
Control towerNon-towered
CTAF122.800
UNICOM122.800
FREQUENCIES
Communications
122.800
CTAF
CTAF
122.800
UNICOM
UNICOM
Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.
AIRPORT REMARKS
Operational remarks
›FOR CD CTC BOSTON APCH 603-594-5552.
›ALL SEAPLANE TKOFS & LDGS MUST BE N OF THE BANDSTAND. ALL TVL S OF THE BANDSTAND MUST NOT EXCEED HEADWAY SPD.
›PUBLIC WATERS OF THE STATE OF NH.
›TKOF & LDG USING RWY 19W PROHIBITED JAN - MAR.
›RWY 01W THLD APRXLY 100 FT NE OF FLOATING BANDSTAND.
›FOR SEAPLANE PRKG & ICE RWY CONDS CALL 603-271-7398.
›RWY 01W/19W HAS ICE IN WINTER PLOWED TO APRXLY 2600 FT. CK NOTAMS FOR ICE RWY CONDS.
›VFR USE ONLY.
›RWY 01W/19W PWRLINE MKD WITH ORANGE BALLS 1000 FT S OF THR AT S END; LESS THAN 30 FT HGT ALG ROADWAY.
FREQUENTLY ASKED
Does B18 have a METAR?
No on-field METAR is issued for B18. This page uses the nearest reporting station as a reference.
Does B18 have a TAF?
No TAF is issued directly for B18. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at B18?
B18 sits at 504 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for B18?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.