Twenty freshwater bodies, picked for the stories they tell.

Lakes and inland seas losing surface area to irrigation, drought, or upstream damming. Each one a slow-motion crisis with named victims and decades of evidence.

• Lake Chad

  12.95°N · 14.25°E

  Lost ~90% of its surface area since the 1960s. 30M people across Chad, Niger, Nigeria, and Cameroon depend on it.

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• Aral Sea South Basin

  43.80°N · 59.10°E

  Once the world's 4th-largest lake. Diverted for Soviet cotton irrigation; southern basin nearly dry.

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• Lake Urmia

  37.60°N · 46.00°E

  Hypersaline lake, NW Iran. Lost ~80% volume since the 1970s due to upstream damming.

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• Dead Sea

  31.80°N · 35.55°E

  Dropping ~1m/year. Jordan River diversion and mineral extraction. Lowest point on Earth.

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• Salton Sea

  33.05°N · 115.70°W

  California's largest lake, accidentally created in 1905. Agricultural runoff source declining; shoreline retreats.

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Sites with active or seasonal flooding regimes. Pulse floods, delta inundation, monsoon-driven swells. Tracking these is parametric-insurance territory.

• Lake Victoria

  -0.09°S · 34.14°E

  Africa's largest lake. Recent flood episodes have submerged shoreline communities and infrastructure.

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• Tonle Sap

  13.05°N · 103.85°E

  Cambodia's life-source lake. Annual flood reversal of the Mekong tributary; fisheries collapsing.

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• Okavango Delta

  -19.80°S · 23.10°E

  Inland delta in Botswana. Pulse-flooded every dry season. UNESCO World Heritage site.

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• Tana River Delta

  -2.55°S · 40.52°E

  Kenya's longest river. Delta supports pastoralist communities; large-scale irrigation pressure.

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• Amazon Delta

  -0.50°S · 49.50°W

  Mouth of the Amazon. Tidal-influenced; deforestation upstream is changing sediment regimes.

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• Danube Delta

  45.20°N · 29.40°E

  Europe's largest river delta. Romania/Ukraine border; protected wetland complex.

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• Lower Congo River

  -5.85°S · 13.05°E

  Lower Congo gorge near the Atlantic. Persistent cloud cover; one of the world's most data-poor large rivers.

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Sites where agricultural pressure, settlement, and water-body dynamics interact. Mostly seasonal, with both flood and stress signals across the year.

• Lake Garda (Po Valley)

  45.42°N · 10.65°E

  Italy's largest lake. Drought-stressed alpine fed; Po Valley irrigation downstream.

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• Mekong Delta

  10.05°N · 105.65°E

  Vietnam's rice bowl. Saltwater intrusion advancing 90km inland from upstream damming and sea-level rise.

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• Lake Turkana

  3.50°N · 36.05°E

  World's largest desert lake. Threatened by Ethiopia's Gibe III dam reducing Omo River inflow.

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• Lake Titicaca

  -15.85°S · 70.02°W

  Highest commercially navigable lake on Earth. Glacial-fed; receding ice and pollution stress.

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• Nile Delta

  31.40°N · 30.40°E

  Source of Egypt's agriculture. Sea-level rise, subsidence, salinization; population pressure.

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• Omo River Delta

  4.60°N · 36.15°E

  Flows into Lake Turkana from Ethiopia. Gibe III dam altering downstream hydrology since 2015.

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• Mesopotamian Marshes

  30.90°N · 47.40°E

  Iraq's southern marshlands. Drained under Saddam Hussein; partial restoration ongoing.

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• Niger Delta

  5.30°N · 5.30°E

  Nigeria's oil-producing delta. Mangrove loss, oil pollution, and population pressure.

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