Sukkur is the narrowest point on the lower River Indus, which is why it was the location chosen by the British for the construction in 1932 of the first Indus dam, the Lloyd Barrage. Seven canals were dug to distribute water to all parts of the province; this eventually led to Pakistan having the longest irrigation system in the world, with 61,000 km (38,000 miles) of irrigation canals. The Indus is a river; the Indus River. ... 1932 is a leap year starting on a Friday. ... Scrivener Dam, Canberra Australia, was engineered to withstand a once-in-5000-years flood event A dam is a barrier across flowing water that obstructs, directs or retards the flow, often creating a reservoir, lake or impoundment. ... The Canal du Midi in Toulouse, France Canals are man-made waterways, usually connecting existing lakes, rivers, or oceans. ... Irrigation in the Heart of the Sahara Irrigation (in agriculture) is the replacement or supplementation of rainfall with water from another source in order to grow crops. ...
This culture abruptly declined as the river Indus changed its course, deserting the central alluvial planes, of Sindh and swinging too far, either to the east or to the west of the plains, wherefrom water could not reach the irrigated tracts as those were at higher level than the new bed of the river.
Sukkur Barrage met the obstacles of labor (32,000 laborers for 10 years and 77,000 laborers for 5 months a year and over 10 years) by use of machines.
Sukkur Barrage is meant to maintain the desired level of water on the upstream side of river Indus called as pond.
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