Hudson Bay at a glance
- 111 maverage depth
- 113 mmedian depth
- 514 mmaximum depth
- 754,266 km²water area
Hudson Bay is a bay. Inside its outline the GEBCO grid has about 754,266 km² of water, with an average depth of about 111 m (the middle value is 113 m) and a maximum of 514 m, found at 62.58° N, 78.84° W.
Open the map at the deepest cell and tap to read the depth.
How deep is each part of the Hudson Bay?
The bar splits the Hudson Bay's water by depth. Each colour is a depth band, and the shares add up to 100%.
- 0 to 200 m: 96.3%
- 200 to 1,000 m: 3.8%
- 1,000 to 4,000 m: 0%
- 4,000 to 6,000 m: 0%
- below 6,000 m: 0%
Named features near the deepest point: Digges Basin (48 km), Fife Ridge (344 km), Kendall Ridge (458 km), Ottawa Ridge (459 km).
The Hudson Bay if sea level dropped
The slider on the map lowers the sea in steps. This table shows how much of the Hudson Bay's water would be land at each step.
| Sea level lowered by | Becomes land | Share of its water |
|---|---|---|
| 10 m | 17,767 km² | 2.4% |
| 20 m | 39,103 km² | 5.2% |
| 50 m | 120,830 km² | 16% |
| 80 m | 231,280 km² | 30.7% |
| 120 m | 413,398 km² | 54.8% |
| 200 m | 725,958 km² | 96.2% |
| 500 m | 754,260 km² | 100% |
| 1,000 m | 754,266 km² | 100% |
| 2,000 m | 754,266 km² | 100% |
| 3,000 m | 754,266 km² | 100% |
| 4,000 m | 754,266 km² | 100% |
| 6,000 m | 754,266 km² | 100% |
A simple bathtub model: it lowers the sea everywhere by the same amount and does not simulate how water would really drain.
Nearby seas
- Foxe Basin average depth about 77 m
- Baffin Bay average depth about 943 m
- Gulf of Saint Lawrence average depth about 163 m
- Labrador Sea average depth about 1,948 m
- Beaufort Sea average depth about 1,407 m
- Lincoln Sea average depth about 280 m
Nearest by the centre of each outline. All oceans and seas
Frequently asked questions
How deep is the Hudson Bay?
On average about 111 m in the GEBCO grid (the middle value is 113 m). The deepest cell inside its outline is 514 m, at 62.58° N, 78.84° W.
How big is the Hudson Bay?
About 754,266 km² of water inside its Natural Earth outline, counted from the grid cells that are below sea level.
How much of the Hudson Bay would be land if sea level dropped?
With the sea 10 m lower, about 17,767 km² (2.4%) of its water would be land. At 6,000 m lower, 100% would be. This is a simple bathtub model that lowers the sea evenly everywhere.
Data: depths from the GEBCO_2026 grid, statistics worked out inside the Natural Earth outline of the bay. See data sources and licences. The GEBCO Grid should NOT be used for navigation or for any other purpose involving safety at sea.