Four breaches in MNV drain in taluka Khairpur Nathan Shah have inundated over 50 villages.
He said the water of Hamal lake had been released into the MNV drain. The water was diverted from three sources, he said, adding that the flow would be released into Manchhar lake.
The level of water in the lake reached 111.9RL and this in Indus at Dadu-Moro bridge reached 131RL.