Why is drought shrinking Iraq’s southern marshlands so fast?

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Persistent Drought and Reduced River Flow Are Rapidly Shrinking Iraq’s Southern Marshlands

Iraq's southern marshlands are experiencing an unprecedented and rapid shrinkage due to a prolonged drought that has persisted for five years, a stark contrast to previous shorter dry spells. This environmental crisis is exacerbated by a significant reduction in water flow from the Tigris and Euphrates rivers, a consequence of upstream dam construction in Turkey and Iran, and compounded by soaring summer temperatures exceeding 50 degrees Celsius, making this year one of the driest since 1933. The Iraqi government, facing a severe water scarcity crisis for its 46 million people and agricultural needs, has prioritized these demands over the preservation of the marshlands, leading to a drastic reduction in their size.
Decades-Long Drought and Climate Vulnerability

The current drought affecting Iraq's southern wetlands marks a significant departure from historical patterns, with local herders noting that previous droughts typically lasted only one to two years before water resources replenished. This five-year spell, however, has left the once-vibrant marshlands severely depleted. Iraq's geographical location and climate patterns make it particularly susceptible to the impacts of climate change, with rising temperatures intensifying evaporation and exacerbating water scarcity. The extreme heat, with summer temperatures regularly surpassing 50 degrees Celsius, further stresses the already limited water resources.
Upstream Dam Construction Significantly Reduces River Inflows

A critical factor contributing to the marshlands' decline is the substantial decrease in water levels of the Tigris and Euphrates rivers, the primary water sources for the region. Dams constructed in upstream countries, specifically Turkey and Iran, have dramatically curtailed the volume of water flowing into Iraq. This upstream control over water resources means that Iraq has less agency in managing its own water supply, directly impacting the ecosystems that depend on these river flows. This reduction in inflow is a primary driver behind the persistent water shortages.
Government Prioritization Shifts Water Allocation Away from Marshes

In response to widespread water scarcity affecting its population of 46 million and its agricultural sector, the Iraqi government has been compelled to implement strict water rationing. The allocation of available water resources has been strategically prioritized to meet the immediate needs of drinking water and agriculture. Consequently, the marshlands, which historically supported a unique ecosystem and traditional livelihoods, have been relegated to a lower priority in water management plans. This shift in government focus means that water that would have historically flowed into the marshes is now being diverted for human consumption and farming.
Drastic Reduction in Marshland Area and Ecological Devastation

The consequences of the prolonged drought and reduced water flow are starkly evident in the physical transformation of the marshlands. Once spanning approximately 5,600 square kilometers, the submerged area has now been reduced to a mere 800 square kilometers. This dramatic shrinkage has had devastating ecological repercussions, impacting the diverse flora and fauna that are endemic to the Mesopotamian wetlands. Fish populations have plummeted from 48 species to just four, and the number of wild bird species has fallen from 140 to 22. The habitat loss also threatens the survival of species like the Mesopotamian water buffalo, with UN reports indicating their population has fallen from over 300,000 in 1974 to around 40,000.

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Why is drought shrinking Iraq’s southern marshlands so fast?

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