Canal Restoration Can’t Wait: From Excavation Drive to Water Strategy

Canal Restoration Can’t Wait: From Excavation Drive to Water Strategy

Dr Md Jafar Ullah

Former Dean & Professor

Sher-e-Bangla Agricultural University

(The article was written on 18 March 2026)

 

Beyond inauguration: why canal revival matters now

Bangladesh’s renewed focus on canal excavation has brought long-overdue attention to its neglected water infrastructure. The nationwide rollout of re-excavation projects is an important step, but the real challenge is ensuring these efforts translate into lasting economic, agricultural and environmental gains.

In a deltaic country, water management is not seasonal, it underpins national productivity. For generations, canals distributed water, drained floods and sustained rural livelihoods. Their decline has not only reshaped landscapes but also altered the economics of agriculture.

Restoring canals is no longer just a development initiative; it is an urgent necessity in the face of rising irrigation costs, groundwater stress and climate uncertainty.

 

From surface water to groundwater dependence

Bangladesh’s agricultural growth over the past four decades has relied heavily on groundwater irrigation. Tube wells enabled the expansion of high-yielding crops, particularly dry-season rice, contributing significantly to food security.

This transformation, however, has come at a cost. In many regions, groundwater levels are declining, while irrigation has become increasingly energy-intensive. Farmers are now more exposed to rising fuel and electricity prices, directly affecting production costs and profitability.

Meanwhile, surface water systems, rivers, canals and wetlands, have been neglected. Thousands of canals have lost functionality due to siltation, encroachment and poor maintenance.

Rebalancing the shift from groundwater to surface water is now critical. Canal restoration offers one of the most practical pathways to achieve this transition.

 

The economic case for canal revival

Canals are not just hydrological assets, they are economic infrastructure.

A functional canal network can reduce irrigation costs by lowering dependence on mechanized pumping. Surface water, when efficiently managed, requires far less energy than groundwater extraction, easing both farm-level expenses and national energy demand.

Restored canals can also increase cropping intensity, enable diversification and reduce risks associated with erratic rainfall. In waterlogged areas, improved drainage can prevent crop losses and stabilize yields.

The benefits extend beyond agriculture. Canal systems support fisheries, livestock and local transport, contributing to rural employment and income diversification.

At the macro level, reducing reliance on groundwater and energy-intensive irrigation can lower subsidy pressures and improve resource efficiency.

 

Climate resilience and water security

Climate change is already altering Bangladesh’s hydrological patterns. Rainfall is becoming more erratic, dry periods are lengthening, and extreme events are increasing in frequency.

In this context, canals function as adaptive infrastructure. They can store excess monsoon water, facilitate drainage during floods and supply irrigation during dry spells. This dual role makes them essential for managing climate variability.

Canals also contribute to groundwater recharge, helping maintain aquifer levels and supporting a more balanced water system. Without such integration, continued overdependence on groundwater could pose long-term sustainability risks.

 

Why excavation alone is not enough

While the current excavation drive is a positive step, experience shows that digging canals is the easiest part; sustaining them is far more complex.

Past initiatives often failed because they overlooked the natural dynamics of the delta, sediment flows, river connectivity and seasonal water movement. Without accounting for these factors, newly excavated canals can quickly silt up and lose functionality.

A more strategic approach is therefore essential—one that prioritizes canals based on hydrological relevance rather than administrative convenience.

Equally important is tailoring interventions to local conditions. Some canals require full re-excavation, while others need only desiltation, bank stabilization or protection from encroachment. Treating all canals alike risks misallocating resources and undermining the effectiveness of the programme.

 

Governance and institutional coordination

Large-scale water management requires strong governance.

Effective coordination between water resource authorities, agricultural agencies and local governments is critical. Fragmented implementation can weaken outcomes, even with substantial investment.

Transparency is equally important. Given the scale of public expenditure, project selection, budgeting and monitoring must be subject to clear accountability mechanisms.

Land management remains a sensitive issue. Many former canals are now encroached upon or occupied, requiring careful resolution, including fair compensation and legal clarity.

 

The role of communities

Long-term sustainability depends on local participation.

Communities living along canals are both primary beneficiaries and key stakeholders. Their involvement in maintenance, monitoring and water-sharing can significantly improve outcomes.

Well-supported local water management groups can help prevent encroachment, ensure equitable distribution and reduce maintenance costs.

 

Aligning with long-term planning

Canal restoration must align with broader frameworks such as the Bangladesh Delta Plan 2100, which emphasises reconnecting rivers, canals and floodplains to restore natural water flows.

Modern tools, including satellite mapping and digital elevation models, can help identify priority areas and design interventions that work with natural systems rather than against them.

Without such alignment, isolated projects risk becoming short-lived efforts rather than part of a coherent national strategy.

 

From project to policy priority

Bangladesh’s canal excavation drive presents a significant opportunity. Its success, however, will depend on whether it evolves from a series of projects into a sustained policy priority.

Restoring canals is not about revisiting the past; it is about securing the future of agriculture, reducing economic vulnerability and strengthening climate resilience.

The delta has always depended on a careful balance between water and land. Rebuilding that balance requires more than excavation, it demands science, governance and long-term vision.

Canal restoration can no longer remain an afterthought in Bangladesh’s development agenda; it must become a central pillar of its water and agricultural strategy.