Ocean Floor Map

Caspian Sea depth map

A lake named a sea: average depth about 235 m, deepest 1,052 m (GEBCO_2026 grid).

Tap or scroll to load the interactive map

Sea level todayDrag the slider to lower the sea and see the land that would appear.

Sea level in metres below today’s. A simple bathtub model: it lowers the sea everywhere by the same amount and does not simulate how the water would really drain.

Key

Sea depth

  • Deeper than 6,000 m
  • 4,000 to 6,000 m
  • 2,000 to 4,000 m
  • 1,000 to 2,000 m
  • 200 to 1,000 m
  • Shallower than 200 m (the continental shelf)

Land height

  • Land up to 500 m
  • 500 to 2,000 m
  • Above 2,000 m

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  • Seabed exposed when the sea is lowered A dashed white line marks today’s coast.

How to read the map. Darker blue is deeper water. Tap anywhere to see how deep the sea is there, or how high the land is, and the nearest named undersea feature. Depths come from the GEBCO_2026 grid, which in most of the deep ocean is predicted from satellite measurements of the sea surface rather than surveyed by ship, and the map’s tiles are coarser than the grid, so narrow trenches read shallower on the map than their true depth. Not for navigation.

Caspian Sea at a glance

  • 235 maverage depth
  • 73 mmedian depth
  • 1,052 mmaximum depth
  • 378,508 km²water area

Caspian Sea is a lake that is named a sea, and the Natural Earth outlines list it with the seas. Inside its outline the GEBCO grid has about 378,508 km² of water, with an average depth of about 235 m (the middle value is 73 m) and a maximum of 1,052 m, found at 38.95° N, 50.74° E.

The Caspian Sea is a lake: it is enclosed by land, and in the drain model it stays water at every step. It appears in the Natural Earth outlines, and on maps, as a sea.

Open the map at the deepest cell and tap to read the depth.

How deep is each part of the Caspian Sea?

The bar splits the Caspian Sea's water by depth. Each colour is a depth band, and the shares add up to 100%.

  • 0 to 200 m: 67.1%
  • 200 to 1,000 m: 32.8%
  • 1,000 to 4,000 m: 0.1%
  • 4,000 to 6,000 m: 0%
  • below 6,000 m: 0%

Named features near the deepest point: Eratosthenes Seamount (1,719 km), Danube Canyon (1,781 km), Herodotus Basin (2,144 km), Red Sea Rift (2,338 km).

Nearby seas

Nearest by the centre of each outline. All oceans and seas

Frequently asked questions

How deep is the Caspian Sea?

On average about 235 m in the GEBCO grid (the middle value is 73 m). The deepest cell inside its outline is 1,052 m, at 38.95° N, 50.74° E. It is a lake, despite its name.

How big is the Caspian Sea?

About 378,508 km² of water inside its Natural Earth outline, counted from the grid cells that are below sea level.

Data: depths from the GEBCO_2026 grid, statistics worked out inside the Natural Earth outline of the lake. See data sources and licences. The GEBCO Grid should NOT be used for navigation or for any other purpose involving safety at sea.

All oceans and seas · Undersea features · Drain the oceans

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