KARACHI: Authorities breached the country’s largest freshwater lake on Sunday, displacing up to 100,000 people from their homes but saving more densely populated areas from gathering flood water, a minister said.
Record monsoon rains and melting glaciers in northern mountains have brought floods that have affected 33 million people and killed at least 1,290, including 453 children. The inundation, blamed on climate change, is still spreading.
Manchar Lake, which is used for water storage, had already reached dangerous levels and the increased pressure posed a threat to surrounding areas in southern Sindh province, Sindh Irrigation Minister Jam Khan Shoro said.
He said about 100,000 people would be affected by the breach but it would help save more populated clusters and also reduce water levels in other, harder-hit areas.
“By inflicting the breach we have tried to save Sehwan town. Water levels on Johi and Mehar towns in Dadu district would be reduced by this breach in the lake,” Shoro told Reuters.
Indus in high flood at Sindh’s three barrages
It was not clear how many of the 100,000 asked to leave their homes would actually do so.
Some displaced by the floods have complained that shelters are crowded, while others are reluctant to leave their possessions.
Aside from historic rainfall, southern Pakistan has had to contend with increased flooding as a surge of water flowed down the Indus river.
The country has already received nearly three times the 30-year average rainfall in the quarter through August, totalling 390.7 millimetres (15.38 inches). Sindh province, with a population of 50 million, was hardest hit, getting 464% more rain than the 30-year average.
Being downstream on the Indus river, the southern parts of the country have witnessed swelling river waters flowing from the north. Pakistan’s limited dams and reservoirs are already overflowing and cannot be used to stop downstream flows.
Tarbela dam in the north-west, has been at capacity - 1,550 feet and 5.8 million acre feet - for weeks, according to National Disaster Management Authority (NDMA) data.
Downstream in Sindh, barrages are under pressure with the Indus river in high flood level, the NDMA said in its latest situation report.
Authorities also prepared for more rain in the north over the next few days up until Tuesday.
“Pakistan Meteorological Department (PMD) has forecasted that weak monsoon currents from Arabian Sea are penetrating upper and central parts of the country which subsequently cause rain-wind / thundershowers,” the NDMA said in an advisory.
It cautioned local administrations to be on an enhanced state of alertness, and to restrict vehicle movement in areas prone to flash floods and landslides as well as those close to water channels.
It said some populations in the north could be at risk, and advised “timely evacuation”.
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