What happened
Heavy monsoon rain battered Islamabad and Rawalpindi on Monday, 17 August 2026, inundating low-lying neighbourhoods, entering homes and forcing the city’s water and sanitation agency to declare a rain emergency, while a separate pile-up on the M-2 motorway killed at least one person.
The National Weather Forecasting Centre recorded 107mm of rain in Pirwadhai, 80mm in Gawalmandi, 76mm in New Kattarian, 64mm in Katcheri near Chaklala and 48mm in Shamsabad by 1:50pm, according to the Express Tribune. Floodwater reached about six feet in Kattarian and three feet in Gawalmandi. In Islamabad, the Pakistan Meteorological Department (PMD) recorded 146mm at Golra near 11-E, 138mm at Bokra, 48mm at its H-8/2 headquarters and 17mm at Saidpur Village.
The Rawalpindi Water and Sanitation Agency (WASA) said water in Nullah Lai and its associated drains rose to about 20 feet at one point, prompting authorities to sound danger sirens and advise residents in vulnerable areas to move to safer locations. WASA managing director Aziz Ullah Khan said flooding hit Fauji Colony and Mumtaz Town, where overflowing drains sent water into populated areas and caused what he described as significant damage to household belongings. In Mumtaz Town, around six feet of water accumulated inside dozens of homes, he said.
Residents of Mumtaz Town, which lies inside the Chaklala Cantonment, told the Express Tribune they were left to drain water from their homes and remove belongings themselves. The agency said the situation improved after the rain eased and the level in Nullah Lai began falling.
The motorway pile-up
Separately, Rescue 1122 said at least one person was killed and 35 others were injured when multiple vehicles collided on the M-2 motorway near Rawalpindi in bad weather. A rescue service spokesperson, Usman Gujjar, said 36 people were affected in the pile-up, with 25 injured taken to hospitals: 22 to the Pakistan Institute of Medical Sciences and three to Shifa Hospital. Ten more were treated at the scene. The person who died was identified as Shamsur Rehman, a resident of Attock, and his body was shifted to Rawalpindi Teaching Hospital.
The rescue service said it received a call at 11:50am reporting a seven-vehicle collision near Capital Smart City.
Why it matters
The downpour again exposed the twin cities’ drainage and flood-control weaknesses during the monsoon. WASA declared a rain emergency and reported difficult conditions in and around Chaklala Cantonment, including Dhok Kala Khan, Mumtaz Town, Banaras Colony and Afzal Town, while several major roads and connecting streets were inundated and traffic slowed.
The PMD had forecast more rain-wind and thundershowers for Islamabad, the Pothohar region, northeast Punjab, Kashmir and upper Khyber Pakhtunkhwa during the week beginning 17 August, with heavy falls expected.
What is still uncertain
The full extent of damage to homes and property had not been tallied, and it was not immediately clear how many families were displaced. WASA said the immediate risk had receded as Nullah Lai’s level fell, but intermittent rain continued, and residents disputed the agency’s account of how quickly rescue and support arrived.
Sources & reporting notes
This is a summary of published reporting, not independent reporting. Details, figures and quoted remarks are as carried by the cited source, which was reviewed on 17 August 2026.
- The Express Tribune — "Heavy rain wreaks havoc in twin cities, inundates streets and homes"17 August 2026 · Rainfall totals, Nullah Lai levels, the WASA rain emergency, the M-2 pile-up and the PMD outlook.
