Indus Dolphin Game Reserve boundaries cover an approximate area of 44,200 ha and
are about 210km stretch between Guddu and Sukkur Barrage. This area covers
Jacobabad, Ghotki, Shikarpur and Sukkur Districts. There are two main barrages in the
stretch starting from .Guddu Barrage and Sukkur Barrage at the other end. Guddu
Barrage controls the flow of water for irrigation and flood. This barrage has 68 bays and it
feeds Ghotki feeder, Begari feeder and Pat and Desert canals. Sukkur Barrage was built
by British and has 66 pans with heavy gates feeding the largest irrigation system of the
world with more than 5 million acres.