Luangwa River ago, there was no way out and the Luangwa Rift filled with a Rift Valley Lake called the Madumabisa Lake, which rivalled Lake Malawi in size. The water of the lake overflowed in a river to the south-west, towards what is now the Kalahari, where it combined with the Okavango, Upper Zambezi, Cuando and Kafue rivers, emptying into the Limpopo River and flowing to the Indian Ocean. Several geological events combined to produce the current river systems. Faulting produced another graben just to the south of the Luangwa Rift, and running east-west: the Zambezi Rift Valley and the Chicoa Trough.
Sharing the water of the Ganges founding leader Sheikh Mujibur Rahman signed the wide-ranging Indo-Bangladeshi Treaty of Friendship, Cooperation and Peace on 19 March 1972; as per the treaty, the two nations established a Joint River Commission to work for the common interests and sharing of water resources, irrigation, floods and cyclones control. The Farakka Barrage is a dam on the Bhagirathi river located in the Indian state of West Bengal, roughly from the border with Bangladesh. India uses it to control the flow of the Ganges river. The dam was built to divert the Ganges River water into the Hooghly River during the dry season,