Dhaka's New Waterlogging Master Plan Sets Drainage Deadlines That Will Reshape Daily Life for Millions

Dhaka's two city corporations have begun enforcing a revised urban drainage master plan that directly affects roughly 22 million residents who live and work across the capital. The Dhaka South City Corporation (DSCC) and Dhaka North City Corporation (DNCC) published updated project schedules in late June 2026, identifying 47 priority canal zones and 138 kilometres of secondary drains earmarked for clearing or reconstruction before the 2027 monsoon season. Work has already started in Mirpur, Demra and the Lalbagh area, where contractors are operating under night-shift restrictions to reduce peak-hour congestion.

The timing matters because Dhaka loses an estimated 6 to 10 billion taka in economic activity each year due to monsoon waterlogging, according to figures cited in the Bangladesh Planning Commission's Eighth Five-Year Plan. Residents in low-lying wards such as Shyampur, Jatrabari and Badda routinely wade through knee-deep floodwater for days after heavy rain, disrupting schools, clinics and small businesses. Climate projections prepared by the Bangladesh Meteorological Department indicate that rainfall intensity during June-to-September has increased by roughly 12 percent over the past two decades, making the existing drainage infrastructure increasingly inadequate.

What Changes for Residents Starting This Month

Construction zones are the most immediate disruption. The DSCC has issued notices closing portions of Nazimuddin Road and Bangshal Road on alternating weekdays, and the DNCC has restricted heavy vehicle access on the Mirpur-10 to Pallabi corridor during morning rush hours between 7 a.m. and 10 a.m. Commuters using buses on those routes should expect delays of 20 to 40 minutes, transport officials say, through at least October 2026. Rickshaw pullers and CNG auto-rickshaw operators working those corridors will face detour distances averaging an additional 3 kilometres per trip.

Beyond the construction period, the project is expected to deliver measurable relief. The city corporations say the completed upgrades will reduce average waterlogging duration in affected wards from roughly 48 hours per flood event to fewer than 20 hours. Residents in Mohammadpur, one of the densest areas in South Asia with an estimated 400,000 people in under 12 square kilometres, are among those the project identifies as high-priority beneficiaries. Local market associations in Mohammadpur's Town Hall area have noted that a single three-day waterlogging episode can erase up to 30 percent of a small trader's monthly income, based on surveys conducted by the Dhaka Chamber of Commerce and Industry in 2024.

Budget and Accountability Mechanisms

The drainage upgrade programme draws from two funding streams: a 3,200 crore taka allocation in the national budget for fiscal year 2025-26, channelled through the Local Government Engineering Department, and a separate Asian Development Bank credit facility of approximately 150 million US dollars approved in 2024 under the Dhaka Environmentally Sustainable Water Supply Project. The ADB component carries disbursement conditions requiring quarterly progress reports filed with the Ministry of Local Government, Rural Development and Cooperatives, which means residents and journalists can track milestone completion through those published reports.

Policy analysts say the accountability structure is more transparent than earlier Dhaka infrastructure cycles, but note that canal encroachment remains an unresolved variable. The Department of Environment recorded 64 encroachment complaints on Dhaka's canal network in 2025 alone, and the master plan does not specify an enforcement mechanism for removing illegal structures that sit within proposed drainage corridors. The government says a joint task force involving the Bangladesh Water Development Board and the city corporations will address encroachment cases on a rolling basis, with the first round of legal notices expected to go out before the end of July 2026.

Residents who believe their property or business falls within a designated project zone can verify their ward's status through the DSCC or DNCC ward offices, where printed maps of the 47 priority canal zones are available. The city corporations have also set up a telephone helpline, published in official gazette notices, for reporting construction-related road damage or drainage blockages caused by contractor activity. The next formal project review is scheduled for September 2026, when both corporations will present completion percentages to the ministry ahead of the final pre-monsoon intervention window in early 2027.