Alma (Rivière La Grande Décharge) Seaplane Base
Daylight today(Oct 14, 2026, local time)
About 10h 56m 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 Alma (Rivière La Grande Décharge) Seaplane Base
This is a list of airports in Quebec. It includes all Nav Canada certified and registered water and land airports, aerodromes and heliports in the Canadian province of Quebec. Airport names in italics are part of the National Airports System.
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 (0)
No runway data recorded for this airport.
Airspace in this area(7)
| Name | Class | Type | Floor | Ceiling |
|---|---|---|---|---|
| V386 AIRWAY | Class B | Controlled | 12500 ft MSL | 18000 ft MSL |
| MONTREAL FIR CAE | Class B | Controlled | 12500 ft MSL | 18000 ft MSL |
| BAGOTVILLE, QC TCA | Class D | Controlled | 1200 ft GND | 12500 ft MSL |
| MONTREAL FIR CAE | Class E | Controlled | 6000 ft MSL | 12500 ft MSL |
| V386 AIRWAY | Class E | Controlled | 2200 ft GND | 12500 ft MSL |
| BAGOTVILLE, QC TCA | Class E | Controlled | 700 ft GND | 12500 ft MSL |
| CYR653 ALMA, QC OCSL BY NOTAM | Special use | Restricted | 2000 ft MSL | 8000 ft MSL |
Approximate bounding-box match from OpenAIP · all Canada airspace. Reference only — consult official charts for exact boundaries and status.
Tall obstacles nearby
| Obstacle | Height AGL | Top (MSL) | Lit |
|---|---|---|---|
| Obstacle | — | 512 ft | — |
| Obstacle | — | 430 ft | — |
| Obstacle | — | 643 ft | — |
| Obstacle | — | 650 ft | — |
| Obstacle | — | 531 ft | — |
| Obstacle | — | 443 ft | — |
| Obstacle | — | 692 ft | — |
| Obstacle | — | 446 ft | — |
Tallest obstacles within ~10 nm. Data via OpenAIP. Reference only — consult official charts.
Nearby airports
Great-circle distance and true bearing from Alma (Rivière La Grande Décharge) Seaplane Base.
Frequently asked questions
Where is Alma (Rivière La Grande Décharge) Seaplane Base located?
Alma (Rivière La Grande Décharge) Seaplane Base is seaplane base located in Alma, Canada, at an elevation of 227 ft (69 m).
What time zone is Alma (Rivière La Grande Décharge) Seaplane Base in?
Alma (Rivière La Grande Décharge) Seaplane Base is in the America/Toronto time zone (UTC-04:00).
What is the magnetic variation at Alma (Rivière La Grande Décharge) Seaplane Base?
The magnetic variation (declination) at Alma (Rivière La Grande Décharge) Seaplane Base is approximately 15.2° W, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.
What airports are near Alma (Rivière La Grande Décharge) Seaplane Base?
The nearest airport to Alma (Rivière La Grande Décharge) Seaplane Base is Alma Airport (YTF), about 3.4 nm to the ssw, followed by Chicoutimi/Saint-Honoré Aerodrome and Roberval Airport.
Is the information on this page suitable for flight planning?
No. Alma (Rivière La Grande Décharge) Seaplane Base data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.