23 people have so far died in rain-related incidents in the state where vast areas are marooned and road links snapped.
As the flood scenario remained grim with Mahanadi and Baitarani rivers flowing above the danger mark, Chief Minister Naveen Patnaik reviewed the situation and visited the control room at Special Relief Commissioner's office.
"The flood situation is under control at the moment. Officers are fully prepared to deal with the situation," he told reporters after the review.
With huge volume of water flowing into the swollen Mahanadi due to heavy downpour in upper catchment areas, the water level in Hirakud reservoir has risen up to 628 ft as against the full capacity of 630 feet.
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Over 12 lakh cusec water is likely to flow into the river through Munduli around midnight tonight as more sluice gates of Hirakud Dam have been opened to discharge excess water from the reservoir, he said, adding the flood water of Mahanadi is expected to hit the delta region tomorrow.
He said steps have been taken to prevent breach in river embankments and patrolling intensified for constantly monitoring the vulnerable points.
As districts like Cuttack, Jagatsinghpur, Kendrapara, Puri, Buodh, Khurda and Nayagarh are likely to be affected due to flood in Mahanadi river system, the concerned authorities have been asked to take preparatory measures, he said.
Over 47,000 people have already been evacuated from low-lying areas to safe places and instruction has been given to districts to evacuate villagers in time from areas facing floods, he said.