Prince William Sound at a glance
- 214 maverage depth
- 172 mmedian depth
- 756 mmaximum depth
- 7,120 km²water area
Prince William Sound is a sound. Inside its outline the GEBCO grid has about 7,120 km² of water, with an average depth of about 214 m (the middle value is 172 m) and a maximum of 756 m, found at 60.68° N, 147.70° W.
Open the map at the deepest cell and tap to read the depth.
How deep is each part of the Prince William Sound?
The bar splits the Prince William Sound's water by depth. Each colour is a depth band, and the shares add up to 100%.
- 0 to 200 m: 55.5%
- 200 to 1,000 m: 44.5%
- 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: Kodiak Seamount (432 km), Giacomini Seamount (471 km), Pratt Guyot (576 km), Durgin Guyot (641 km).
The Prince William Sound if sea level dropped
The slider on the map lowers the sea in steps. This table shows how much of the Prince William Sound's water would be land at each step.
| Sea level lowered by | Becomes land | Share of its water |
|---|---|---|
| 10 m | 229 km² | 3.2% |
| 20 m | 391 km² | 5.5% |
| 50 m | 1,041 km² | 14.6% |
| 80 m | 1,647 km² | 23.1% |
| 120 m | 2,602 km² | 36.6% |
| 200 m | 3,949 km² | 55.5% |
| 500 m | 6,793 km² | 95.4% |
| 1,000 m | 7,120 km² | 100% |
| 2,000 m | 7,120 km² | 100% |
| 3,000 m | 7,120 km² | 100% |
| 4,000 m | 7,120 km² | 100% |
| 6,000 m | 7,120 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
- Gulf of Alaska average depth about 1,559 m
- Bering Sea average depth about 1,844 m
- Beaufort Sea average depth about 1,407 m
- Chukchi Sea average depth about 42 m
- Salish Sea average depth about 130 m
- East Siberian Sea average depth about 26 m
Nearest by the centre of each outline. All oceans and seas
Frequently asked questions
How deep is the Prince William Sound?
On average about 214 m in the GEBCO grid (the middle value is 172 m). The deepest cell inside its outline is 756 m, at 60.68° N, 147.70° W.
How big is the Prince William Sound?
About 7,120 km² of water inside its Natural Earth outline, counted from the grid cells that are below sea level.
How much of the Prince William Sound would be land if sea level dropped?
With the sea 10 m lower, about 229 km² (3.2%) 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 sound. See data sources and licences. The GEBCO Grid should NOT be used for navigation or for any other purpose involving safety at sea.