Lake Baikal
Lake Baikal is a deep, ancient freshwater lake in Siberia, Russia, noted for its biodiversity and clear water.
Also known as: Baikal
How big is it?
31,500 km² in area
Surface area · approximate
A little perspective
About 3.15 times the area of 10,000 km² region.
10,000 km² region: A region is a large expanse of land defined by geographical or administrative boundaries.
Measurements, assumptions & sources +
Lake Baikal
UNESCO describes Lake Baikal as about 3.15 million hectares in surface area and roughly 1,700 m deep. Shoreline and survey conventions affect exact figures.
UNESCO World Heritage Centre — Lake Baikal
The marked surface area is calibrated. Unmeasured illustration details are representative.
10,000 km² region
Defined 100 × 100 km equal-area rectangle. A teaching example, not a named place or actual boundary.
Defined examples — our methodology
The marked area is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 31,500 km²
For comparison, this page uses surface area. This is labelled approximate; the central value is useful for comparison, while real values or measurement solutions can vary.
UNESCO describes Lake Baikal as about 3.15 million hectares in surface area and roughly 1,700 m deep. Shoreline and survey conventions affect exact figures.
The identifying illustration and the numerical comparison remain separate. How calibrated comparisons work →
Recorded properties
Lake Baikal dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 31,500 km² | Not recorded | approximate | |
| 1.7 km | 1.64 km to 1.7 km | approximate |
Around this scale
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These links use compatible area records, ordered around the selected value.
Nearest lower value · Places10,000 km² region10,000 km²A region is a large expanse of land defined by geographical or administrative boundaries.
Nearest higher value · PlacesUnited Kingdom243,600 km²The United Kingdom is a country in north-western Europe comprising England, Scotland, Wales and Northern Ireland.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- UNESCO World Heritage Centre — Lake BaikalApproximately 3.15 million hectares and about 1,700 m deep.
There’s always another scale




