At least 1136 people have died since the monsoon began in June. More than 33 million people, or one in seven Pakistanis, have been affected by the floods, and nearly one million houses have been destroyed or severely damaged. More than 80 000 hectares of cultivable land have been destroyed and more than 3400 km of roads and 157 bridges washed away.
Built during the British Raj from 1923 to 1932, the Sukkur Barrage is the largest single irrigation network of its kind in the world. Sindh is arid with rainfalls averaging 100-200 mm per year, while the evaporation rate is between 1000-2000 mm. The Indus irrigates otherwise barren lands of Sindh. Sukkur Barrage is used to for the purposes of irrigation and flood control. This barrage enables water to flow through a network of seven canals 9923 km long, allowing ~25% of total canal irrigated area of the country. The bulk of the water flowing from the north of the country through the river is expected to reach the structure around 5 September.