Flood Prevention & Farmland Rehabilitation in Agriculture
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2025 Punjab Floods: A Climate and Agriculture Emergency
Table of Contents
The devastating floods of 2025 in the Sutlej, Ravi, and Chenab rivers inundated approximately 2.5 million acres of farmland in Punjab. In response to massive losses, the federal government has declared a climate and agriculture emergency, yet it remains unclear what practical measures will follow under this cover.
Whatever course the authorities eventually adopt, two interventions are indispensable alongside immediate relief efforts: first, to rehabilitate the flood-affected lands for cultivation; and second, to mitigate the risk of another flood next year, when rainfall is forecast to be even higher in 2026 – implying an even greater disaster.
The Debate Over Silt and Sand
On TV talk shows,a divisive debate continues over whether the inundated fields will be left buried under coarse sand or enriched with a fertile layer of silt once the waters recede.In reality, both processes occur together.
During floods, when a river spills out of its bed and spreads across the floodplain, it erodes fertile topsoil from slightly elevated lands and deposits this farther into the floodplain. The eroded lands, in contrast, are stripped of their topsoil and left exposed with underlying sand.
Unchecked construction that create choke points during floods must be banned lest an even greater disaster occur in 2026 when rainfall is forecast to be even higher
Moreover,as water velocity decreases across the broad floodplain,suspended sediments settle: coarser material (fine sand and coarse silt) is deposited closer to the river channel,while finer particles (silt and clay) travel farther and settle on distant fields.
Land Rehabilitation: A Critical Need
As an inevitable result, all inundated fields require rehabilitation. Even fields covered with fertile silt become uneven and need extensive re-leveling before cultivation can resume.Fields covered under sand pose a greater challenge, though, as farmers must transport silt from elsewhere to restore fertility. Both tasks demand substantial resources. This is where government support becomes critical for enabling farmers to prepare their land in time for the next wheat crop.
Flood Mitigation: enhancing River Capacity
An even bigger challenge for the government is to enhance the water-carrying capacity of rivers so that floodwaters can be confined within predetermined areas, even if levels rise above 2025 flood marks.
This requires detailed mapping of river paths, including creeks, spill channels, and floodways. With the aid of computer modelling and simulation, the government must precisely demarcate river channels, floodplains, and adjacent vulnerable areas. These zones are already discernible to some extent where bunds exist, as a notable example, in Sindh province and along the Chenab downstream of Multan. But in the regions where bunds do not exist – apart from short embankments near headworks, bridges, or…