Farakka Barrage - India

Farakka Barrage is a barrage across the Ganges River, located in the Indian state of West Bengal, roughly 16.5 kilometres (10.3 miles) from the border with Bangladesh. Construction was started in 1961 and completed in 1975. The barrage is over 3 miles long and has more than 100 locks. The feeder canal, which connects the Ganges and the Bhagirathi-Hooghly River is about 25 miles (40km) long and has lock gates at the Hooghly River end. The barrage was built to divert water from the Ganges River into the Hooghly River during the dry season, from January to June, in order to flush out the accumulating silt which in the 1950s and 1960s was a problem at the Port of Kolkata (Calcutta) on the Hooghly River.