Johnson Island Seaplane Base
Daylight today(Sep 4, 2026, local time)
About 13h 8m 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 Johnson Island Seaplane Base
Johnson Island Seaplane Base is a seaplane base in Mountain, United States. It sits at an elevation of 870 ft (265 m) and has 2 runways, the longest 4,200 ft / 1,280 m. It observes America/Chicago local time. The nearest airport is Bowman Ultralight Airstrip (32WN), about 1.9 nm to the sse.
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 (2)
| Runway | Length | Width | Surface | Lighting | Status |
|---|---|---|---|---|---|
| 16W / 34W | 4,200 ft / 1,280 m | 400 ft | Water | Unlit | Open |
| 09W / 27W | 3,600 ft / 1,097 m | 400 ft | Water | Unlit | Open |
Tall obstacles nearby
| Obstacle | Height AGL | Top (MSL) | Lit |
|---|---|---|---|
| WSCO-TV (Suring) | 505 ft | 965 ft | — |
Tallest obstacles within ~10 nm. Data via OpenAIP. Reference only — consult official charts.
Nearby airports
Great-circle distance and true bearing from Johnson Island Seaplane Base.
Frequently asked questions
Where is Johnson Island Seaplane Base located?
Johnson Island Seaplane Base is seaplane base located in Mountain, United States, at an elevation of 870 ft (265 m).
How many runways does Johnson Island Seaplane Base have?
Johnson Island Seaplane Base has 2 runways, the longest being 4,200 ft / 1,280 m.
What time zone is Johnson Island Seaplane Base in?
Johnson Island Seaplane Base is in the America/Chicago time zone (UTC-05:00).
What is the magnetic variation at Johnson Island Seaplane Base?
The magnetic variation (declination) at Johnson Island Seaplane Base is approximately 3.9° W, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.
What airports are near Johnson Island Seaplane Base?
The nearest airport to Johnson Island Seaplane Base is Bowman Ultralight Airstrip (32WN), about 1.9 nm to the sse, followed by Piso Airport and Buds Landing Airport.
Is the information on this page suitable for flight planning?
No. Johnson Island Seaplane Base data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.