Shrinking Lakes Across the World Due to Environmental Threats

 IN NEWS — Shrinking Lakes Across the World Due to Environmental Threats

Analysis

  • Global Concern: Several major lakes around the world are drying up rapidly due to climate change, water diversion, pollution, and unsustainable agricultural practices.
  • Ecological Impact: The decline in lake water levels is shrinking wildlife habitats, threatening biodiversity, and altering regional microclimates.
  • Socio-economic Impact: Local livelihoods dependent on fisheries, agriculture, and tourism are under stress, leading to water insecurity and migration pressures in affected regions.
  • Human Activity: Excessive irrigation withdrawals, river diversions, and mining are aggravating the depletion of these crucial freshwater sources.
  • Climate Linkage: Prolonged droughts and rising global temperatures have accelerated evaporation rates and reduced replenishment.

Major Lakes Facing Rapid Shrinkage

1. Lake Poopó (Bolivia)

  • Once the second-largest lake in Bolivia, located in the Altiplano region.
  • Suffered extensive water loss due to climate change, mining, and agricultural diversion.
  • Impact: Loss of local fisheries, displacement of indigenous communities, and severe damage to the regional ecosystem.

2. Aral Sea (Central Asia)

  • Located between Kazakhstan and Uzbekistan.
  • Lost over 90% of its volume mainly due to diversion of the Amu Darya and Syr Darya rivers for irrigation.
  • Impact: Creation of toxic dust storms, increased desertification, and collapse of local fisheries.

3. Lake Mead (United States)

  • The largest reservoir in the U.S., situated on the Colorado River.
  • Faces historic water level decline due to prolonged drought, below-average rainfall, and rising demand.
  • Impact: Threatens water security for millions and affects hydropower generation and ecosystem health.

4. Lake Chad (Africa)

  • Shared by Chad, Niger, Nigeria, and Cameroon.
  • Once one of Africa’s largest freshwater lakes, now reduced to a fraction of its size.
  • Causes: Climate change, droughts, and excessive irrigation use.
  • Impact: Food and water insecurity, decline in pastoral livelihoods, and loss of biodiversity.

5. Lake Urmia (Iran)

  • One of the largest saltwater lakes globally, located in northwestern Iran.
  • Has lost more than 80% of its water volume due to agricultural water extraction and climate-linked droughts.
  • Impact: Salt storms, collapse of aquatic ecosystems, and socio-economic displacement.

6. Dead Sea (Middle East)

  • Located between Jordan, Israel, and Palestine.
  • Water levels declining due to diversion of the Jordan River and industrial mineral extraction.
  • Impact: Sinkholes, loss of tourism sites, and ecological degradation.

Static Information

LakeLocationTypePrimary Cause of Drying
Lake PoopóBoliviaFreshwaterClimate change, mining
Aral SeaCentral AsiaInland saline seaIrrigation diversion
Lake MeadUSAReservoirDrought, overuse
Lake ChadAfricaFreshwaterClimate change, water diversion
Lake UrmiaIranSaltwaterAgriculture, drought
Dead SeaJordan–Israel–PalestineSalt lakeRiver diversion

UPSC Relevance

  • GS Paper 1: Physical Geography – Lakes, Climate Change Impacts.
  • GS Paper 3: Environment, Disaster Management, Sustainable Resource Use.
  • Essay / GS Paper 3 Linkage: “Depleting Freshwater Resources – A Global Environmental Crisis.”

Updated – 16 June 2025 ; 11:08 AM | News Source: The Times of India