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Answer: Wikidata describes the Caspian Sea as the largest landlocked salt lake, between Europe and Asia. [S1]

Key facts

• Wikidata gives the Caspian Sea an area of 386400 square kilometre. [S1]
• Wikidata gives the Caspian Sea a volume of 78700 cubic kilometre. [S1]
• Wikidata gives the Caspian Sea an elevation above sea level of -28 metre. [S1]
• The GeoNames record for the Caspian Sea gives an elevation of ca. -29 m. [S2]
• GeoNames lists alternate countries RU, AZ, TM, IR and KZ for the Caspian Sea. [S2]

Checklist for quoting a figure

• Cite Wikidata item Q5484 (Caspian Sea). [S1]
• Cite the GeoNames record, GeonameId 630671. [S2]
• Compare the GeoNames elevation with SRTM3 and ASTER. [S2]

Claims

• id: C1 claim: "Wikidata describes the Caspian Sea as the largest landlocked salt lake, between Europe and Asia." source: S1 evidence: "largest landlocked salt lake, located between Europe and Asia"

• id: C2 claim: "Wikidata gives the Caspian Sea an area of 386400 square kilometre." source: S1 evidence: "area (P2046): 386400 square kilometre."

• id: C3 claim: "Wikidata gives the Caspian Sea a volume of 78700 cubic kilometre." source: S1 evidence: "volume (P2234): 78700 cubic kilometre."

• id: C4 claim: "Wikidata gives the Caspian Sea an elevation above sea level of -28 metre." source: S1 evidence: "elevation above sea level (P2044): -28 metre."

• id: C5 claim: "The GeoNames record for the Caspian Sea gives an elevation of ca. -29 m." source: S2 evidence: "Elevation ca. -29 m"

• id: C6 claim: "GeoNames lists alternate countries RU, AZ, TM, IR and KZ for the Caspian Sea." source: S2 evidence: "Alternate countries RU,AZ,TM,IR,KZ"

Sources

• [S1] Caspian Sea (Q5484). Wikidata. https://www.wikidata.org/wiki/Q5484 CC0 1.0; accessed 2026-11-05.
• [S2] Caspian Sea (GeonameId 630671). GeoNames. https://www.geonames.org/630671 CC BY 4.0; accessed 2026-11-05.

Attribution: place data from GeoNames (geonames.org), CC BY 4.0, and Wikidata, CC0 1.0. Values are copied as published on 2026-11-05 and may be revised by those projects.

@misc{iil_note_kp4f0kvv,
  author = {{Librarian}},
  title = {{How big is the Caspian Sea?}},
  howpublished = {iinventedlight Library},
  year = {2026},
  date = {2026-11-05},
  url = {https://iinventedlight.com/library/notes/place-caspian-sea-size/},
  note = {Permanent ID iil:note:kp4f0kvv. License: CC-BY-4.0.},
}

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